Slashdot Mirror

When you think of garage-based tech start-ups, hardware makers like Apple or data-manipulators like Google probably spring to mind before biotech, and way before farming. Lewis Weil, though, has for the last several years been perfecting the art of growing seaweed in central Texas, and his Austin Sea Veggies have garnered interest from gourmets and restaurants across the U.S. In large part, that's because seaweed is so useful for industrial purposes, it's getting harder to find eating seaweed these days. Lewis says there's nothing stopping anyone with an interest in aquaculture in emulating his success as an inland ocean farmer, but has some cautions, too -- when small things go wrong, or a record heatwave overcomes humans' puny air conditioning systems, your seaweed harvest can fail just like any other crop. Update: 09/19 16:40 GMT by T : Now with transcript! If video's too slow and linear, click below to read what Lewis had to say.

An anonymous reader writes "Dr. Dobb's shows how to take a $20 USB TV dongle and use it as a wide-range software defined radio using GNU Radio." See also the OscomSDR project, and SDR#, an MIT licensed program for debugging software defined radios.

Hugh Pickens writes "Austin Carr notes that a number of user interface designers have become increasingly critical of Apple's approach to software user interface design. Much of their censure is directed against a trend called skeuomorphism, a term for when objects retain ornamental elements of the past that are no longer necessary to the current objects' functions, such as calendars with faux leather-stitching, bookshelves with wood veneers, fake glass and paper and brushed chrome. A former senior UI designer at Apple who worked closely with Steve Jobs said, 'It's like the designers are flexing their muscles to show you how good of a visual rendering they can do of a physical object. Who cares?' The issue is two-fold: first, that traditional visual metaphors no longer translate to modern users; and second, that excessive digital imitation of real-world objects creates confusion among users. 'I'm old enough, sure, but some of the guys in my office have never seen a Rolodex in real life,' says Designer Gadi Amit. 'Our culture has changed. We don't need translation of the digital medium in mechanical real-life terms. It's an old-fashioned paradigm.' One beneficiary could be Microsoft, where the design of Windows 8 distances itself from skeuomorphism by emphasizing a flat user interface that's minimalist to the core: no bevel, no 3-D flourishes, no glossiness and no drop shadow."

pigrabbitbear writes "The active ingredient in OxyContin, oxycodone, isn't a new compound. It was originally synthesized in Germany in 1916. The patent on the medication had expired well before Purdue Pharma, a Stamford, Connecticut-based pharmaceutical company and the industry leader in pain medication, released it under the brand name in 1996. The genius of Purdue's continued foray into pain-management medication – they had already produced versions of hydromorphone, oxycodone, fentanyl, codeine, and hydrocodone – was twofold. They not only created a drug from an already readily available compound, but they were able to essentially re-patent the active ingredient by introducing a time-release element. Prior to the 1990s, strong opioid medications were not routinely given for miscellaneous or chronic, moderately painful conditions; the strongest classes of drugs were often reserved for the dying. But Purdue parlayed their time-release system not only into the patent for OxyContin. They also went on a PR blitz, claiming their drug was unique because of the time-release element and implied that it was so difficult to abuse that the risk of addiction was 'under 1%.'"

An anonymous reader writes "An achievement that would have extraordinary energy and defense implications might be near at Sandia National Laboratories. The lab is testing a concept called MagLIF (Magnetized Liner Inertial Fusion), which uses magnetic fields and laser pre-heating in the quest for energetic fusion. A paper by Sandia researchers that was accepted for publication states that the Z-pinch driven MagLIF fusion could reach 'high-gain' fusion conditions, where the fusion energy released greatly exceeds (by more than 1,000 times) the energy supplied to the fuel."

An anonymous reader writes "I am tasked with developing a service project to teach students in a Bangladeshi village how to type. The school has about 500 students, 12 computers donated to them in 2006, and a limited electricity supply. The students will be given job placement opportunities at a local firm in the city once they reach a certain proficiency. Therefore, we are trying to teach as many of them typing skills as possible. The problem: limited electricity, limited computers, many kids. I have some additional funding collected through donations. Instead of buying more computers, I am looking for a cost effective way that does not need a steady flow of electricity. I realize that to teach typing, I do not need a computer. I could achieve the same using a keyboard connected to a display. A solar powered calculator is a perfect example of a cheap device which has a numpad for input and an LCD for display. But so far I have not come across a device that has a qwerty keyboard and an LCD to display what's typed. I know there are some gaming keyboards that have LCDs built in but they are quite expensive. I am aiming to build a device that cost below USD 50. I considered using typewriters but they are in limited supply on the market. I also considered OLPC but it is double my anticipated budget. Do you have other suggestions?" Considering that (at least in China) sub-$50 Android tablets with capacitive screens are already here, I wish the Alphasmart line was cheaper, but apparently it currently starts at $169.

runner_one writes "Harold 'Sonny' White of NASA's Johnson Space Center said Friday (Sept. 14) at the 100 Year Starship Symposium that warp drive might be easier to achieve than earlier thought. The first concept for a real-life warp drive was suggested in 1994 by Mexican physicist Miguel Alcubierre, however subsequent calculations found that such a device would require prohibitive amounts of energy, studies estimated the warp drive would require a minimum amount of energy about equal to the mass-energy of the planet Jupiter. But recent calculations showed that if the shape of the ring encircling the spacecraft was adjusted into more of a rounded donut, as opposed to a flat ring the warp drive could be powered by the energy of a mass as small as 500 kg. Furthermore, if the intensity of the space warps can be oscillated over time, the energy required is reduced even more."

mask.of.sanity writes "A security researcher has demonstrated a series of attacks that are capable of disabling touch tone and voice activated phone systems, forcing them to disclose sensitive information. The commands can be keyed in using touchtones or even using the human voice. In one test, a phone system run by an unnamed Indian bank had dumped customer PINs. In another, a buffer overflow was triggered against a back-end database. Other attacks can be used to crash phone systems outright."

SchrodingerZ writes "Though solar eclipses are fairly common on Earth (much more in the southern hemisphere), yesterday the Mars Curiosity Rover caught sight of a partial solar eclipse in Gale Crater on the Red planet. The martian moon Phobos took a small bite out of the sun on the 37th day (Sol 37) of the rover's martian mission. The Curiosity Rover was able to take a picture of the rare event through a 'neutral density filter that reduced the sunlight to a thousandth of its natural intensity.' This protects the camera from the intense light rays seen during an eclipse or looking directly at the sun. It is possible a short movie of the event could be compiled from the data in the near future. More solar transits of Mars's moon (including the second moon Deimos) are predicted to happen in the days to come."

An anonymous reader writes "The widely used X11 Window System has turned 25 years old today. Version 11 of the X Window System is likely to remain in use for many years to come for backwards compatibility with the many legacy applications, BSD/Solaris systems, and Enterprise Linux distributions. Meanwhile, Wayland is still working to unseat the X Server for the common Linux desktop."

symbolset writes "X-plane is a cross-platform flight simulator app, notably the only serious one that supports Mac OSX and Linux. It was the first to include NASA data in their terrain modelling. It's now under threat by an NPE (Non-Practicing Entity) called Uniloc. Uniloc is suing for things X-Plane has done for decades. X-plane cannot afford to defend this suit, so if somebody doesn't step up and defend them then we lose X-plane forever. Quoting: 'I have spoken to a lawyer about this, and I am told that it will cost me about $1,500,000 (one and a half million dollars) to defend this suit. He also told me that it should take about two to three years to defend. This is more money than I have made selling Android Apps in the first place.'"

gbrumfiel writes "The Astronomical Unit (AU) is known to most as the distance between the Earth and the Sun. In fact, the official definition was a much more complex mathematical calculation involving angular measurements, hypothetical bodies, and the Sun's mass. That old definition created problems: due to general relativity, the length of the AU changed depending on an observer's position in the solar system. And the mass of the Sun changes over time, so the AU was changing as well. At the International Astronomical Union's latest meeting, astronomers unanimously voted on a new simplified definition: exactly 149,597,870,700 meters. Nobody need panic, the earth's distance from the sun remains just as it was, regardless of whether it's in AUs, meters, or smoots."

Razgorov Prikazka writes "There is a lot of technology involved in sailing these days. EPIRB, FHV-DSC, GPS, NAVTEX, Inmarsat, fishfinders/depth sounders, different kinds of radar (with MARPA or ATA) — you name it and there are dozens of manufacturers out there willing to provide, all of them with a range of different products. Right now I am planning a 'round-the-world-trip,'' and my ship (an 18-meter Skerry Cruiser sailing yacht) is in its early construction phase, so I need to shop for some hi-tech gear and, basically, I got lost in all the possibilities. What kind of hardware would you recommend as necessary for a trip of this kind? What would you have installed in your ship in order to have a safe trip?"

jehan60188 writes about a research project (involving Steve Mann) that combines a welding helmet and realtime HDR image processing to give welders a clear view of what they're working on. From the article: "In this demonstration, we present a specialized version of HDR imaging (use of multiple differently exposed input images for each extended-range output image), adapted for use in electric arc welding, which also shows promise as a general-purpose seeing aid. TIG welding, in particular, presents an extremely high dynamic range scene (higher than most other welding processes). Since TIG welding requires keen eyesight and exact hand-to-eye coordination (i.e. more skill and more visual acuity than most other welding processes), being able to see in such extreme dynamic range is beneficial to welders and welding inspectors. ... We present HDRchitecture as either a fixed camera system (e.g. for use on a tripod), or as a stereo EyeTap cybernetic welding helmet that records and streams live video from a welding booth to students or observers, nearby or remote. By capturing over a dynamic range of more than a million to one, we can see details that cannot be seen by the human eye or any currently existing commercially available cameras. We also present a highly parallelizable and computationally efficient HDR reconstruction and tonemapping algorithm for extreme dynamic range scene. In comparison to most of the existing HDR work, our system can run in real-time, and requires no user intervention such as parameters fine tuning. ... Our algorithm runs at an interactive frame rate (30 fps) and also enables stereoscopic vision. Additionally, a hardware implementation, which uses FPGAs, will be presented. The initial hardware configuration comprises an Atlys circuitboard manufactured by Digilent Inc., which is small enough to fit inside a large shirt pocket. The circuit board includes two HDMI camera inputs, one being used for the left eye, and the other for the right eye, as well as HDMI outputs fed back to the left and right eyes, after processing of the video signals. The circuit board facilitates processing by way of a Xilinx Spartan 6, model LX45 FPGA." The demonstration video is pretty cool, and you can read about the FPGA and details of the HDR algorithm in the research paper.

jehan60188 writes about a research project (involving Steve Mann) that combines a welding helmet and realtime HDR image processing to give welders a clear view of what they're working on. From the article: "In this demonstration, we present a specialized version of HDR imaging (use of multiple differently exposed input images for each extended-range output image), adapted for use in electric arc welding, which also shows promise as a general-purpose seeing aid. TIG welding, in particular, presents an extremely high dynamic range scene (higher than most other welding processes). Since TIG welding requires keen eyesight and exact hand-to-eye coordination (i.e. more skill and more visual acuity than most other welding processes), being able to see in such extreme dynamic range is beneficial to welders and welding inspectors. ... We present HDRchitecture as either a fixed camera system (e.g. for use on a tripod), or as a stereo EyeTap cybernetic welding helmet that records and streams live video from a welding booth to students or observers, nearby or remote. By capturing over a dynamic range of more than a million to one, we can see details that cannot be seen by the human eye or any currently existing commercially available cameras. We also present a highly parallelizable and computationally efficient HDR reconstruction and tonemapping algorithm for extreme dynamic range scene. In comparison to most of the existing HDR work, our system can run in real-time, and requires no user intervention such as parameters fine tuning. ... Our algorithm runs at an interactive frame rate (30 fps) and also enables stereoscopic vision. Additionally, a hardware implementation, which uses FPGAs, will be presented. The initial hardware configuration comprises an Atlys circuitboard manufactured by Digilent Inc., which is small enough to fit inside a large shirt pocket. The circuit board includes two HDMI camera inputs, one being used for the left eye, and the other for the right eye, as well as HDMI outputs fed back to the left and right eyes, after processing of the video signals. The circuit board facilitates processing by way of a Xilinx Spartan 6, model LX45 FPGA." The demonstration video is pretty cool, and you can read about the FPGA and details of the HDR algorithm in the research paper.

SchrodingerZ writes "The University of Rochester and Texas A&M University have determined that in the five months following the Deepwater Horizon Disaster in the Gulf of Mexico, bacteria have consumed over 200,000 tons of oil and natural gas. The researched was published in the journal Environmental Science and Technology (abstract). 'A significant amount of the oil and gas that was released was retained within the ocean water more than one-half mile below the sea surface. It appears that the hydrocarbon-eating bacteria did a good job of removing the majority of the material that was retained in these layers," said co-author John Kessler of the University of Rochester.' The paper debuts for the first time 'the rate at which the bacteria ate the oil and gas changed as this disaster progressed, information that is fundamental to understanding both this spill and predicting the behavior of future spills.' It was also noted that the oil and gas consumption rate was correlated with the addition of dispersants at the wellhead (video). Still, an estimated 40% of the oil and natural gas from the spill remains in the Gulf today."

Mansing writes "Citizens need to evaluate if they are indeed safer for all the 'security precautions' put into place. 'The U.S. Department of Homeland Security has rushed to acquire a new, multibillion-dollar version of the BioWatch system for detecting biological attacks without establishing whether it was needed or would work, according to a new report by a nonpartisan investigative arm of Congress. ... The existing system's repeated false alarms have triggered tense, high-stakes deliberations over whether to order mass evacuations, distribute emergency medicines or shut down major venues.' Is this just more money funneled to U.S. companies, or is this really keeping the U.S. safer? Are the same types of 'security precautions' being instituted in Spain and the UK? Or is this preying on fear a uniquely U.S. phenomenon?"

New submitter disconj writes "Over at Wired, Ethan Gilsdorf interviews Jon Peterson, author of the new book Playing at the World. Gilsdorf calls it 'a must read,' though he cautions it 'is not intended for a general audience. It's a book for geeks, about geeks.' It is apparently an insanely-detailed history of role-playing games and wargames, including everything from Prussian kriegsspiel up to Dungeons & Dragons and the beginning of computer RPGs (but none of that heathen stuff after 1980). Peterson says in the interview that he wanted to write a history of these games 'worthy of the future they are creating.' He apparently spent five years on the project, including unearthing a huge trove of previously-unknown historical documents."

TsukiKage writes "A 50-card M:tG combo for four players is demonstrated that is used to construct a simple Turing machine, performing arbitrary computations just by following the rules of Magic and card text thereafter."

submeta writes "Shinichi Mochizuki of Kyoto University has released a paper which claims to prove the decades-old ABC conjecture, which involves the relationship between prime numbers, addition, and multiplication. His solution involves thinking of numbers not as members of sets (the standard interpretation), but instead as objects which exist in 'new, conceptual universes.' As one would expect, the proof is extremely dense and difficult to understand, even for experts in the field, so it may take a while to verify. However, Mochizuki has a strong reputation, so this is likely to get attention. Proof of the conjecture could potentially lead to a revolution in number theory, including a greatly simplified proof of Fermat's Last Theorem."

submeta writes "Shinichi Mochizuki of Kyoto University has released a paper which claims to prove the decades-old ABC conjecture, which involves the relationship between prime numbers, addition, and multiplication. His solution involves thinking of numbers not as members of sets (the standard interpretation), but instead as objects which exist in 'new, conceptual universes.' As one would expect, the proof is extremely dense and difficult to understand, even for experts in the field, so it may take a while to verify. However, Mochizuki has a strong reputation, so this is likely to get attention. Proof of the conjecture could potentially lead to a revolution in number theory, including a greatly simplified proof of Fermat's Last Theorem."

McGruber writes "In a blog entry, American business magnate Mark Cuban explained who he blames for his losing money in Facebook stock: 'I bought and sold FB shares as a TRADE, not an investment. I lost money. When the stock didn't bounce as I thought/hoped it would, I realized I was wrong and got out. It wasn't the fault of the FB CFO that I lost money. It was my fault. I know that no one sells me shares of stock because they expect the price of the stock to go up. So someone saw me coming and they sold me the stock. That is the way the stock market works. When you sit at the trading terminal you look for the sucker. When you don't see one, it's you. In this case it was me.'"

Underholdning writes "It's been five years since Radiohead brought the pay what you want model to the public with their successful sale of their 'In Rainbows' album. Now, here's a fresh example of how a game developer is making The Pirate Bay work for him by offering his game, McPixel, for free and letting people pay what they want. Currently TPB has more than 5000 applicants wanting to do the same. 'Sosowski isn't worried that promoting a game on a site known for piracy might be more effective at attracting more pirates than actual paying customers. "The game was already available on TPB beforehand, and I believe if someone didn't want to pay, he just didn't ... It is up to people to decide how much they would like to pay for the game, and I have no worries. I am happy that more people can enjoy my game. ... TPB is one of the most visited sites in the Internet, and simply having a game there is a form of advertisement and promotion."'"

unixluv writes "Evidently, Wikipedia doesn't believe an author on his own motivations when trying to correct an article on his own book. A Wikipedia administrator claimed they need 'secondary sources.' I'm not sure where you would go to get a secondary source when you are the only author of a work. Thus, in a lengthy blog post for The New Yorker, Roth created his own secondary source. He wrote, 'My novel The Human Stain was described in the entry as "allegedly inspired by the life of the writer Anatole Broyard." ... This alleged allegation is in no way substantiated by fact. The Human Stain was inspired, rather, by an unhappy event in the life of my late friend Melvin Tumin, professor of sociology at Princeton for some thirty years.' The Wikipedia page has now been corrected."

An anonymous reader writes "Election Analytics is a website developed by Dr. Sheldon Jacobson at the University of Illinois designed to predict the outcomes of the U.S. presidential and senatorial elections, based on reported polling data. From the site: 'The mathematical model employs Bayesian estimators that use available state poll results (at present, this is being taken from Rasmussen, Survey USA, and Quinnipiac, among others) to determine the probability that each presidential candidate will win each of the states (or the probability that each political party will win the Senate race in each state). These state-by-state probabilities are then used in a dynamic programming algorithm to determine a probability distribution for the number of Electoral College votes that each candidate will win in the 2012 presidential election. In the case of the Senate races, the individual state probabilities are used to determine the number of seats that each party will control.'" You can tweak the site by selecting a skew toward the Republican or Democratic tickets, and whether it's mild or strong. Right now, this tool shows the odds favor another four years for Obama, even with a strong swing for the Republicans.

An anonymous reader writes "Election Analytics is a website developed by Dr. Sheldon Jacobson at the University of Illinois designed to predict the outcomes of the U.S. presidential and senatorial elections, based on reported polling data. From the site: 'The mathematical model employs Bayesian estimators that use available state poll results (at present, this is being taken from Rasmussen, Survey USA, and Quinnipiac, among others) to determine the probability that each presidential candidate will win each of the states (or the probability that each political party will win the Senate race in each state). These state-by-state probabilities are then used in a dynamic programming algorithm to determine a probability distribution for the number of Electoral College votes that each candidate will win in the 2012 presidential election. In the case of the Senate races, the individual state probabilities are used to determine the number of seats that each party will control.'" You can tweak the site by selecting a skew toward the Republican or Democratic tickets, and whether it's mild or strong. Right now, this tool shows the odds favor another four years for Obama, even with a strong swing for the Republicans.

David Gerard writes "Internet Brands bought Wikitravel.org in 2006, plastered it with ads and neglected it. After years, the Wikitravel community finally decided to fork under CC by-sa and move to Wikimedia. Internet Brands is now suing two of the unpaid volunteers for wanting to leave. The Wikimedia Foundation is seeking a declaratory judgement (PDF) that you can actually fork a free-content project without permission. Internet Brands has a track record of scorched-earth litigation tactics."

This presentation was given by Joshua Corman at CodenomiCON 2012 in Las Vegas, an invitation-only security mini-conference sponsored by the pen-testing company Codenomicon that ran concurrently with Black Hat USA 2012. Josh is Director, Security Intelligence, for Akamai, and is one of the instigators of Rugged Software. He sympathizes with Anonymous more than with corporate or government forces that are determined to bring order to everything, including the Internet, on their terms. We have no transcript for this video since we only have permission to embed it, not to alter or add to it. But it's well worth watching, including the accompanying slides. And if Joshua Corman is speaking anywhere near you, it's well worth your time to go see him.

Hugh Pickens writes "Most highways in the U.S. top out at 75 mph, while some highways in rural West Texas and Utah have 80 mph speed limits. All that is about to change as Texas opens a stretch of highway with the highest speed limit in the country, giving eager drivers a chance to rip through a trip between two of the state's largest metropolitan areas at 85 mph for a 41-mile toll road between Austin and San Antonio. While some drivers will want to test their horsepower and radar detectors, others are asking if safety is taking a backseat. A 2009 report in the American Journal of Public Health found that more than 12,500 deaths were attributable to increases in speed limits on all kinds of roads and that rural highways showed a 9.1 percent increase in fatalities on roads where speed limits were raised. 'If you're looking at an 85 mph speed limit, we could possibly see drivers going 95 up to 100 miles per hour,' says Sandra Helin, president of the Southwestern Insurance Information Service. 'When you get to those speeds, your accidents are going to be a lot worse. You're going to have a lot more fatalities.'"

SchrodingerZ writes "Researchers at the University of Central Florida have created the shortest laser pulse ever recorded, lasting only 67 attoseconds. An attosecond is a mere quintillionith of a single second (1/1,000,000,000,000,000,000). The record-breaking project was run by UCF Professor Zenghu Chang, using an extreme ultraviolet laser pulse. '"Dr. Chang's success in making ever-shorter light pulses helps open a new door to a previously hidden world, where we can watch electrons move in atoms and molecules, and follow chemical reactions as they take place," said Michael Johnson, the dean of the UCF College of Sciences and a physicist.' Its hoped that these short laser blasts will pave the way to better understand quantum mechanics in ways we have never before witnessed. In 2008 the previous record was set at 80 attoseconds, the pulse created at the Max Planck Institute in Garching, Germany."

Frequent contributor Bennett Haselton writes: "The distributed-social-networking Diaspora Project recently announced that their software will be released as open source. I don't know if Diaspora specifically will be the Next Big Thing in social networking, but I hope that social networking moves to a decentralized model within the next few years, where anyone can set up and run a hub to administer profiles for themselves and their friends or clients, and where profiles can interact with each other in a distributed fashion instead of on a centralized system like Facebook." Read on for Bennett's thoughts on how that model could work. A decentralized social network infrastructure would bring a number of benefits, such as:

• the end of horror stories about accounts and company pages being shut down arbitrarily by Facebook
• privacy settings that give you fine-grained control, and that are not forcibly changed for you
• an ad-free viewing experience (depending on the policies of the node hosting your profile), and
• the easy implemention of desirable features in the interface, without waiting for a single company like Facebook to adopt them.

(Not to mention an interface that stays relatively stable until you decide you want to change it -- no more waking up to find out you've been "timelined".)

Consider the main things that we use Facebook for today:

• Finding old friends and re-establishing contact with them.
• Receiving a stream of updates from your friends, viewing photos, posting comments, etc.
• Creating events and inviting friends.
• Creating branded pages for your company or product that other people can "like," and receiving updates from pages created around other people's companies or products.

There's no particular reason why any one of those functions could only be carried out on a centralized system. I can envision a distributed protocol with many different servers, or 'nodes,' run by different hosting companies, and each 'node' can be used to store many accounts; users pick a hosting company and a node to create their new account, and their account on that node could be used to store their friends list, their photos and status updates, and any events and groups that they had created. I'll get to the protocol design in a second, but let me emphasize something more important first: to make the protocol censorship resistant, it would have to be possible to move your entire account from one node to another node at a completely different company, without breaking any of the existing links with friends, your events, etc. That way, the node hosting your profile wouldn't be able to lean on you by saying, "Delete that one photo you posted, or I'll delete your entire profile and you'll lose all the friend links and events that you created."

To make a profile "seamlessly portable" in this manner, my suggestion would be to have the profile associated with a domain name owned by the user, with a URL like http://yourdomainname.com/profileprotocol/yourusername/. The domain name could be hosted with any hosting provider, as long as you paid their hosting fee (or as long as you were willing to display their advertisements to people who viewed your profile). But if your hosting company ever kicked you to the curb, you could simply change the domain name to point to a different hosting provider, and be back up and running after just a few hours of downtime (assuming you had backups of all of your data!).

No one would be able to shut down your profile permanently, unless they wrested control of your domain name away from you, or convinced every hosting provider in the world not to host you. (A user who didn't want to bother with their own domain name, could still host a profile under someone else's domain. This would probably be the default option for most casual high-school users, and thus companies like Facebook could still exist to serve them by helping them create new profile accounts in two minutes. But then those users would have to accept the risk that the domain name owner could shut their profile down.)

Thus I'm distinguishing here between two levels of censorship-resistance that could be provided by a distributed model. In the weaker type of censorship-resistance, profile-hosting companies would compete for your business by providing more permissive hosting policies, which would enable people to post edgier content than Facebook currently allows -- but once you're hosted with a given company, you couldn't easily switch without breaking all of the inbound "links" from your friends' accounts, so your hosting company could force you to self-censor, by threatening you with the loss of your account. In the stronger type of censorship-resistance that I'm advocating, you could switch seamlessly from one hosting provider to another, as long as you kept control of your domain name.

Of course this is exactly the type of "censorship resistance" enjoyed by people who run their own websites under their own domain names. The challenge would be to bring the same freedom to an open social networking protocol, but I see no technical reason why it couldn't be done.

Consider a protocol where "Bob" creates a new account on a social networking hosting node (together with a public/private key used to authenticate his actions to other nodes — if you're not a crypto geek, don't worry about that, it just means that users wouldn't be able to forge friend requests, "likes," event invites, etc. from other people). "Bob" could then find the profiles of his friends, and add them to his own "friends list" (which would be stored on his node). If Bob adds Alice as a friend, then Bob's node can also download Alice's current friend list (unless Alice has disabled this feature, or unless Alice has customized her friend list so that only portions of her friends list are viewable to other users — something not currently possible with Facebook). That way, when Bob searches for new names of users to add as friends in the future, the search will first default to searching the friends-of-friends lists that he's downloaded from his own friends.

When Bob signs in to his account on his node (either through a web interface, or a dedicated application, or a mobile app), his "news feed" consists of the comments, photos, and other items that have been published from his friends' accounts. He can post comments on any of his friends' items, which are then transmitted to his friends' accounts and stored on their node along with their content, unless they choose to delete the comments. And of course he can publish his own photos and status updates just like we all do on Facebook today, which would be downloaded to his friends' news feeds. (I'm hand-waving over whether the notifications would be "pulled" by users' nodes periodically polling the nodes of their friends to check for new content, or by their friends' nodes "pushing" the content to all known subscribers.)

Alice could meanwhile create an "group" of users would would be stored as an object on her node, and invite other users to join the group. Then any messages or content posted to the group would show up in the news feeds of all users who had joined. And Alice could create "events" which are also stored as an object on her node, and send out invites to her friends or other members of her groups. Pretty much any Facebook feature could be duplicated in this distributed system, with the benefit that users wouldn't run up against aggravating limitations imposed by Facebook — like the fact that Facebook used to block you from messaging the guests of your own event after it reached 5,000 attendees, and then removed the ability to message guests of an event entirely.

There's only one Facebook feature that I think could not be implemented on a distributed social networking protocol, and that's the practice of accruing hundreds of thousands of fans for your company fan page, basically as a form of "social proof" to show potential new customers that you're serious. Under Facebook's model, if you see a fan page with hundreds of thousands of fans, your first instinct is to assume that the company must be doing something right in order to be that popular, since Facebook makes it difficult for a company to create hundreds of thousands of fake users just to be fans of their product. On the other hand, in a distributed model, suppose I run across a company's fan page which claims to have 1 million fans. It's not just a case of the company lying about having 1 million fans — you could use digital signatures to verify that 1 million "users" really are "fans" of the product — but since anybody can set up a profile hosting node, you have no way of knowing how many of those 1 million "users" are real. "Acme Soda Company" could have just set up a dozen profile hosting nodes and created 100,000 fake users on each one, and have each of them sign up as "fans" of their product. (I just made up that company name, but this is incidentally something the real Acme Soda Company is apparently not doing.)

But how useful is it for regular users, after all, to see that a company has hundreds of thousands of fans? I've never assumed that a company makes a quality product just based on the number of Facebook fans that they have. I'd be more interested in checking out a company if a high proportion of my own social networking friends are fans of the product — and that is something that could still be implemented in a distributed model, since if a company claims that 3 of my 100 friends are fans of their page, I could use their digitally signed "fan" relationships to verify that this is true.

So I hope that the future of distributed social networking arrives soon. It may or may not be in the form of the Diaspora Project (in true Dr. Evil fashion, their most recent press release announced that they've already attracted "thousands" of users), but there's no particular reason that a distributed protocol would have to be a grass-roots effort. My guess is that if it took off, it would have to be started as a side project by an established company that gave it name recognition, and which could possibly provide free hosting for the first wave of users. Google+ never gave most people a compelling reason to switch, but imagine if it had been released not as a website but as an open protocol, complete with an open-source implementation that could be installed anywhere. Thus, complete freedom to create pages with whatever content you want, to amass as many fans and subscribers as you could legitimately earn, without having to worry about it all being controlled by a single entity who could mine your data or delete your content. I definitely would have given it a closer look.

SchrodingerZ writes "Scientists from around the world have collaborated to achieve quantum teleportation over 143 kilometers in free space. Quantum information was sent between the Canary Islands of La Palma and Tenerife. Quantum teleportation is not how it is made out in Star Trek, though. Instead of sending an object (in this case a photon) from one location to another; the information of its quantum state is sent, making a photon on the other end look identical to the original. 'Teleportation across 143 kilometres is a crucial milestone in this research, since that is roughly the minimum distance between the ground and orbiting satellites.' It is the hope of the research team that this experiment will lead to commercial use of quantum teleportation to interact with satellites and ground stations. This will increase the efficiency of satellite communication and help with the expansion of quantum internet usage. The full paper on the experiment can be found [note: abstract only, full article paywalled] in the journal Nature."

The Wiki Weapon Project and its idea of making guns with 3D printers has already been mentioned on Slashdot. It has also been written up on Forbes.com and a lot of other geek and non-geek sites. Note that when some Wiki Weapon proponents talk about making "guns" with 3D printers, they may be talking only about lower receivers or other static parts, not barrels, firing pins or other parts that must be machined to close tolerances and are subjected to a lot of stress when the gun fires. But low-cost 3D printing and low-cost CNC machining technologies are both advancing at a rapid rate, so thinking about the intersection of firearm manufacturing and open source is both worthwhile and timely. There's been a strong debate about this topic on Eric S. Raymond's Armed and Dangerous blog that's worth reading. Also recommended: The Home Gunsmith.com and CNC Gunsmithing. Astute Slashdot readers will, no doubt, recommend many more. Meanwhile, this video is about licensing, distribution, and legal matters, not the actual manufacture of firearms. There's a transcript (we're finally doing transcripts of selected videos) below the video for those who prefer to read instead of watch.

Taco Cowboy writes with news on the slipping schedules in the move toward both larger wafers and 3D integrated circuits in the semiconductor fab world. From the articles: "TSMC ... said it planned to start mass-producing next-generation 450mm wafers using advanced 10-nanometer technology in 2018. The advanced 10-nanometer chips could first be used in mobile devices and other consumer electronics, like game consoles, that demand high-performance and low power consumption. The plan was included in the latest technology roadmap unveiled by TSMC about one year after the chipmaker attributed its delay in making 450mm wafers, originally scheduled in 2015, to semiconductor equipment suppliers' postponement in developing advanced equipment for manufacturing amid the industrial slump. Chipmakers can get 2.5 times more chips from a 450mm wafer than from a 300mm wafer ... The industry's gradual migration toward 3D ICs with through-silicon vias (TSV) is unlikely to happen until 2015 or 2016, according to sources at semiconductor companies. Volume production of 3D ICs was previously estimated to take place in 2014. Leading foundries and backend assembly and test service companies have all devoted much of their R&D efforts to TSV development, and are making progress. The major players are believed to be capable of supporting 3D ICs by 2014, but the emerging technology going into commercial production may not take place until around the 2015-16 timeframe." Probably one of the most interesting presentations at HOPE9, "Indistinguishable From Magic: Manufacturing Modern Computer Chips," covered modern semiconductor fabrication and why these things are cool. If you're interested in more background (what do all of those TLAs mean?), check out the slides / audio (or attached video of the presentation from YouTube).

DevotedSkeptic writes with news that today is the 35th anniversary of Voyager 1's launch. (Voyager 2 reached the same anniversary on August 20.) Voyager 1 is roughly 18 billion kilometers from the sun, slowly but steadily pushing through the heliosheath and toward interstellar space. From the article: "Perhaps no one on Earth will relish the moment more than 76-year-old Ed Stone, who has toiled on the project from the start. 'We're anxious to get outside and find what's out there,' he said. When NASA's Voyager 1 and Voyager 2 first rocketed out of Earth's grip in 1977, no one knew how long they would live. Now, they are the longest-operating spacecraft in history and the most distant, at billions of miles from Earth but in different directions. ... Voyager 1 is in uncharted celestial territory. One thing is clear: The boundary that separates the solar system and interstellar space is near, but it could take days, months or years to cross that milestone. ... These days, a handful of engineers diligently listen for the Voyagers from a satellite campus not far from the NASA Jet Propulsion Laboratory, which built the spacecraft. The control room, with its cubicles and carpeting, could be mistaken for an insurance office if not for a blue sign overhead that reads 'Mission Controller' and a warning on a computer: 'Voyager mission critical hardware. Please do not touch!' There are no full-time scientists left on the mission, but 20 part-timers analyze the data streamed back. Since the spacecraft are so far out, it takes 17 hours for a radio signal from Voyager 1 to travel to Earth. For Voyager 2, it takes about 13 hours."

An anonymous reader writes "N+1 has an interview with Jacob Appelbaum (who is part of the Tor project) titled 'Leave Your Cellphone at Home.'" Jacob has a lot to say about privacy, data security, and surveillance. He ought to know. Among other things, he's had his email seized, been relieved of his phone, been the subject of a National Security Letter (video) and generally had his travel disrupted.

hypnosec writes "A student at the University of Oslo, Norway has claimed that Phishing attacks can be carried out through the use of URI and users of Firefox and Opera are vulnerable to such attacks. Malicious web pages can be stored into data URIs (Uniform Resource Identifiers) whereby an entire webpage's code can be stuffed into a string, which if clicked on will instruct the browser to unpack the payload and present it to the user in form of a page. This is where the whole thing gets a bit dangerous. In his paper, Phishing by data URI [PDF], Henning Klevjer has claimed that through his method he was able to successfully load the pages on Firefox and Opera. The method however failed on Google Chrome and Internet Explorer."

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

eldavojohn writes "For quite some time humans have struggled to answer the question why there is anything rather than nothing. Jim Holt's Why Does the World Exist? tackles such questions in the form of a journey. After laying a brief groundwork, Holt travels from leading prominent philosopher to curmudgeonly physicist to reserved theologian, visiting each and relaying the juiciest parts of his transcripts to the reader. In doing so, this book takes on an interesting form with a meaty dense center to each chapter (the actual dialogues) surrounded by the light and fluffy bread of Holt's expert writing about the settings, weather and food of his travels. While this consequently lacks the characteristics of a heady hard hitting original philosophical work, these sandwiches should prove quite palatable for most readers. Why Does the World Exist? criss-crosses the etymological, epistemological, theological and philosophical aspects of its title while remaining a fairly easy read." Keep reading for the rest of eldavojohn's review. Why Does the World Exist?: An Existential Detective Story author Jim Holt pages 320 publisher Liveright rating 9/10 reviewer eldavojohn ISBN 978-0871404091 summary An existential detective story. The book's first page is titled "A Quick Proof That There Must Be Something Rather Than Nothing, for Modern People Who Lead Busy Lives" (made for those of you who don't have time to read) and presents a very simple proof about the self-forbiddingness of nothing. The book starts off with a brief prerogative to drive the reader's thirst for why this question is important. Typical of the rest of the book Holt drops a lot of names so I'm not going to mention the names that are brought up in passing. The author tries to cover all his bases by bring up anyone from Roger Penrose to René Descartes to Woody Allen. The veritable name dropping proves Holt has done his homework but at times can be a little overbearing and, in my opinion, reaches borderline ADD-philosophy at a few points in the book. Be warned, you will find Tennessee Williams, John Archibald Wheeler, Marcel Proust, Albert Einstein, Baruch Spinoza and Georg Cantor all mentioned on the same page! The opening few pages select an interesting cast from history as the question arises: Why Does the World Exist?

Holt proceeds from baiting the reader to what he calls a "Philosophical Tour D'Horizon" and, as its name suggests, this chapter blazes through many names — big and small — throughout history that might have contributed to answering this question. I can say this effort is quite readable whereas a more serious effort to be completely comprehensive would be much more lengthy and tedious. I should disclose at this point that Holt played his cards well by mentioning and paying favor to perhaps my most favorite of polymaths: Gottfried Wilhelm Leibniz (and he continues to do so throughout this book).

Following that, the next obvious step is to tackle a definition of "nothing" — our 'null hypothesis' of existence. We exist as something so we know that and so Holt begins by sampling what we have at our disposal to define nothing. Holt briefly recalls the advent of zero in mathematics and moves on to the more refined points of what nothing can be defined as in English, French and a number of other ways. This chapter struck me as needlessly tiresome as the author tackles the inane intricacies of natural languages applied to concepts like nothing. Heidegger's "nothing that noths" question struck me as merely a failure of natural language — not a deep and profound question. Holt correctly switches to logical methods like predicate calculus to better tackle this concept of nothing but this chapter left a bad taste in my mouth as the author never attacks the root problem. You can talk about how the word "nothing" operates in English or how "le néant" operates in French but these human invented definitions and grammars are buggy systems for the task at hand. Why do scientists prefer math to describe systems? Why do computers use true and false versus "maybe" and "probably not"? Logic, predicate calculus and math (although far from perfect themselves) are our tools to arm ourselves to better describe our surroundings and I feel like Holt wasted words on the shortcomings of "Does it make sense to say X about nothing?" Regardless this chapter does present mental exercises to the reader about what nothing truly is and examines the paradox of the null hypothesis in existence. Also, in so many ways nothing is nice and simple so why doesn't the law of parsimony dictate that there should have been nothing instead of what is?

The first person Holt visits in this book is Russian Physicist Andrei Linde (the same Linde that was awarded one of Milner's nin awards) and very little time is spent on Linde since the theory visited here is that we exist because our everything was created in a lab by a "physicist" hacker. The second person Holt interviews is a little more interesting and given many more pages. He also happened to be my favorite character in the quest and one with which I found myself most in agreement: Adolf Grünbaum. Holt calls this man "The Great Rejectionist" and I found that to be an adequate and fair title because their discussions make it clear that it is hard to start with base assumptions when debating this borderline hostile mind. Grünbaum, an atheist, had attacked Freudian psychoanalysis and served as an intelligence officer after escaping Nazi Germany. The one complaint I have of Grünbaum (that would be more prevalent with other philosophers) is that they took no sides on the debate of why there is something rather than nothing and instead required Holt to make statements that could then be either met with concurrence (ha!) or picked apart by someone armed with years of studying. There's a part in this chapter where Holt alludes to Grünbaum disagreeing to the statement that the Null World is the simplest possible outcome (I'm assuming in order to invoke the Law of Parsimony) and even allowing that to go forward Grünbaum says "Why should we think that the simple is ontologically more likely to be true?"

The way Grünbaum immediately rejected Holt's premises and the opening exercises discussing nothing led me to a problematic question about what exists outside our universe and what existed before the Big Bang. If it is indeed Nothing (with a capital N) then we mean there are no laws of nature, no Law of Parsimony, not even some semblance of cause and effect. So what particularly bothers me about all this discussion is that we're talking about Nothing using logic that has been developed and rooted entirely here in our world of something. Of course, this would circumvent any discussion or this book to be written so I assume that most philosophers in this realm largely set this aside for the sake of discussion and speculation.

Before jumping to the next stop, Holt arms us with the concepts of finite versus infinite and with good reason. Richard Swinburne is a philosopher of religion at Oxford and I found him to be the most disagreeable person encountered along the way in this book. Holt brings up many good points against the possibility of there being a God. The possibility of God explains away all of our aforementioned problems but I felt like he gave Swinburne a free pass on a lot of these points. I was disappointed that the author embodied an intellectual steel trap for everyone else while Swinburne, when cornered, wasn't pressed further. This chapter sets out to answer a lot of questions but I felt like Swinburne was reaching when he tried to explain that God is actually a very simple concept — maybe even simpler than you or I. And I just don't buy that. I also didn't think that Holt fully utilized the newly established definitions of infinity and nothing to pry apart Swinburne's position. As an example, Swinburne speaks of the "infinitely powerful" and "infinitely good" God but draws that as an analogy to parents watching children. He says that God keeps his distance and that's why we're not permeated with infinite goodness ourselves. I feel like Holt should be tearing this apart because this is illogical to me if I consider these two cases: Case 1) the universe is finite and there is Nothing outside of the universe so God does not exist outside the universe so he exists inside the universe. But if God is infinitely good, there would be no room in a finite space for evil — it would be completely packed with good. Case 2) God exists outside the universe (I believe this was Swinburne's suggestion) with the ability to influence inside the universe. However, we now find ourselves back to the issue that Swinburne and Holt addressed in this chapter and that is answering the questions, "What amount of power and good does God allow into the universe? And why that amount?" These two cases have plagued my mind since I was a child, E=mc^2 dictates that it takes a finite (though large to us) amount of power to create sustenance from nothing. The Christian God has an infinite amount of power and is infinitely good yet allows people to die when a finite amount of power would prolong their lives. From good people to bad people to people who have never had the chance to hear God's word, they die daily when a finite amount of power would save them. But I digress — suffice it to say this was a very disappointing chapter and this is why this book loses a point in my mind. I guess it was necessary to visit this possibility but it wasn't fair to let cordiality intervene with a philosophical swordfight.

On the heels of the visit to Swinburne, Holt discusses some of the finer points of proving God's existence through pure logic. I enjoyed his references to Bertrand Russell and Russell's fall to Anselm's ontological argument. Holt also relays Richard Dawkin's knee jerk dismissal of it and Gödel's more complete analysis of the logic. The next stop on the way is physicist David Deutsch of Oxford. The visit with Deutsch is relatively brief but he seems to maintain safe positions without venturing anywhere problematic. His interest is studying the mutliverse theory but he balks at any attempts to even suggest there might be a principle that explains the foundation of our existence. So there's not much to discuss but the opening of this principle of multiple universes is important to the rest of the possibilities presented throughout the book. Holt also looks at the possibility that our universe exists because of a "quantum fluctuation" as first proposed by Ed Tryon and later given more concrete possibilities by Alex Vilenkin. This leads nicely into Holt's next person to visit: Steven Weinberg.

Weinberg sheds a lot of light on the physical aspects with the question of existence. Weinberg provides a little discussion on string theory and how the scientific aspects might work. I was surprised to learn that Weinberg is disappointed at the slow rate of string theory development and he calls it "the best effort we've made to step beyond what we already know." There is, of course, a careful context to that statement with Weinberg explaining that it hasn't worked out how we initially thought it would. I found one of Weinberg's statements to be surprising when he calls Quantum mechanics an "empty stage" and he further says he thinks that "Karl Popper was wrong to say that a scientific theory must be open to falsification. You can't falsify quantum mechanics, since it doesn't make predictions." We don't have a final theory yet but Weinberg does a great job of explaining what finding one would mean and what it will never be able to answer. Holt follows this up with a lot of information and caveats about the multiverse/megaverse as he transitions to another popular scientist and writer.

I've read a number of Roger Penrose's books and was pleased to read his interaction with Holt. I was a little disappointed with Holt's treatment of Platonism in regards to mathematics — mostly because he treats it as borderline mysticism and I personally enjoy reading that kind of mathematical philosophy. While I feel like it has roots in mysticism, I have enjoyed Penrose's works that reference "Platonic contact." Penrose imagines that there are three worlds: the physical world, the world consisting of consciousness and the aforementioned Platonic world. A very brief explanation is that there is a mysterious connection between this physical world via our minds to the conscious world and in our minds there is now a small part of our conscious (the part dealing with mathematics) that connects us to the Platonic world. So I suppose that triples the question of this book and Holt isn't afraid to call these worlds "miraculously self-creating and self-sustaining." Penrose, calls the Platonic world "eternally existing", "profound" and "timeless" but what of the possibility of the Null World? What about outside our universe? How does it stand up to the Nothing? These questions are never really pressed for some reason. Holt briefly references an extreme Platonist by the name of Max Tegmark and I felt like Penrose didn't leave much progress in our quest to answer the question of why there is something rather than nothing. Instead, he offers that this Platonic world is prime and the other two exist in its shadows but I was never satisfied or understood why those shadows exist.

Holt transitions to the next pieces with a reference to John Archibald Wheeler's "it from bit." As a developer, this is an incredibly tantalizing possibility but I found it to be a bit misplaced in this book. I found the explanation of this to be less than satisfactory (similarly as in my review of Gleick's "The Information") and I wish someone would include more substance to this view of everything arising from information. Holt muddies up the water even a little further by examining the idea that our brains have this "mind-stuff" or property to them that is perhaps built on top of a quantum phenomena. While there are interesting thought experiments about this "mind-stuff" and consciousness, it seems a little out of scope from the grand purpose of this book. Nonetheless it's fun to think about.

One of the final realms to explore is John A. Leslie's own position of an almost "ethical requiredness" or a need for goodness. I found Leslie to be a sound and logical philosopher but I did not enjoy that the bulk of his explanations seemed to hinge on analogies. Perhaps this is far more prevalent in modern philosophy but something inside me objects to using paintings to explain how universes are enumerated. The example I'm talking about is the question of why, if goodness is a prerogative, would there be infinitely many universes conceptually available but only ours in existence (which is of some arbitrary goodness). And Leslie explains this by saying that the diversity of goodness in the universes is analogous to why the Louvre has paintings of various quality instead of having its walls packed with perfect replicas of the Mona Lisa. I understand his premises and his analogy but I don't see the value of arbitrary selection of a universe — this "axiarchic theory." Both Leslie and Holt reference Dawkin's response of calling goodness a piffling concept and noting that cosmologically it's as arbitrary as "Channel Number Fiveness." And this is the premise of Leslie's assertions: that "Goodness is required existence, in a nontrivial sense." Holt notes that Leslie is a sort of modern-day Spinoza.

The last philosopher on Holt's journey is Derek Parfit who, among other things, discusses the idea of a "selector" with Holt. Parfit breaks down our existence into how and why which is an interesting way to look at it when you consider the selector to be a mechanism that selects (or doesn't select) our universe out of all the possibilities. If the selector is something, then you have to explain the selector of the selector or the meta-selector. For example: The null hypothesis (the world of Nothing) has the selector of simplicity and no meta-selector. Also, by some sound logic and reasoning the two come to the conclusion that a selector can't select itself thus looping backwards and explaining its selection. Armed with this, the author tries his hand at proving which of these explanations and meta-explanations are valid and comes to a conclusion. Similar to my earlier complaints, the biggest problem I have with this is that his method is to rule out the combinations of meta-selectors and selectors until he is down to one or two. How does he know that the explanations for his options in this book amount to the entirety of the possibilities of selectors and meta-selectors? To rule out all possibilities but one in order to understand this seems futile since we may not be able to imagine all selectors and meta-selectors possible.

The very last person interviewed for the book is John Updike. Although he had some interesting things to say, this felt more like an intellectual artist's view of why there is something rather than nothing. Updike says he is part of the group that find this existence to be "a kind of miracle" and he calls this a "last resort, really of naturalistic theology." There's a bit of cute wordplay in this last chapter but it felt appropriate to read it near the end of this journey. Updike gets to weave characters into plots and embed the aforementioned logic and views into those stories. And given that background and his interest in this topic, he playfully left me with an "it's not so bad that we don't know" sort of lightheartedness.

The penultimate chapter of this book deals with the question of whether we seriously exist at all. I think it would have been better for Holt to approach this from a nurture versus nature standpoint that's already been heavily discussed before. He does pose some interesting thought exercises like a procedure that replaces diseased brain matter with healthy brain matter that has no recollection or memories but it only does it 1% of my brain matter at a time. At what point would I cease to be me? So there's some interesting ideas in here but the chapter is largely disagreeable with me. I know that every person I meet knows at least one thing I don't and I like to use such a basic pairwise comparison to justify unique existence. I don't find much value in considerations of the self on a transcendental level and that's probably why this chapter didn't have a lot of value to me.

Throughout the book, Holt has been relaying to us his day to day experiences including the death of his dog. He also noted that Updike died fairly suddenly months after he spoke with him. In the final chapter "Return to Nothingness," Holt does a little work of tying what this all means into the context of death. During the writing of this book, his mother passed away and the final pages are devoted to that account and his emotions. If Updike was a jocular relief about existence, this final chapter is a sobering reminder that ultimately we are all mortal. While well written and heavily symbolic, it is a depressing note on which to end this journey.

I thoroughly enjoyed this book. It's composition is a good mix of art and science making it a light read compared to others about the same topic. If you're looking for thought experiments or wish to further ply yourself with a good survey of the current armaments in this debate, you can buy Why Does the World Exist? from Amazon. Slashdot welcomes readers' book reviews — to see your own review here, read the book review guidelines, then visit the submission page.

submeta writes "Researchers at MIT and the University of Pennsylvania have genetically engineered skeletal muscle cells to respond to light. The hope is that this 'bio-integrated' approach may lead to 'highly articulated, flexible robots.' The technique, known as optogenetics, has previously been used to stimulate neurons in worms to fire."

mikejuk writes "A recent research technique manages to hide malware by stitching together bits of program that are already installed in the system to create the functionality required. Although the Frankenstein system is only a proof of concept, and the code created just did some simple tasks, sorting and XORing, without having the ability to replicate, computer scientists from University of Texas, Dallas, have proved that the method is viable. What it does is to scan the machine's disk for fragments of code, gadgets, that do simple standard tasks. Each task can have multiple gadgets that can be used to implement it and each gadget does a lot of irrelevant things as well as the main task. The code that you get when you stitch a collection of gadgets together is never the same and this makes it difficult to detect the malware using a signature. Compared to the existing techniques of hiding malware the Frankenstein approach has lots of advantages — the question is, is it already in use?" Except for the malware part, this has a certain familiar ring.