If I remember correctly, there was a product for Windows NT in the late 90's that seemed very similar to this announcement.
What the product basically did was wrap all of the system calls and blocked any privileged ones except if you intervened at the console -- and there wasn't any way to spoof the intervention. It was quite effective once you got it set up (obviously it is hard to boot your OS without *some* privileged system calls), and I never did look into it enough to get their definition of "privileged", although enough to get that if your web server ran at a least-privileged state the product would keep an exploiter from gaining administrator access.
Again, the product worked but never seemed to take off.
Wow, so/. is going to post monthly updates to CO2 but not monthly updates on the 18 years and 5 months of flat temperatures? The latter is news worthy, CO2 concentrations if you've been watching it, are jumping up and down as if life is consuming it. Like it was food for something which isnt human...
Meanwhile someone discovers a link between Sun pollution, magnatism, heat transfer between planets and the 'void' which may explain away "Dark Energy" as simply being sun pollution. Unspent electrons. Energy for star ships.
Yet/. is more focused on cutting off it's nose to spite its face?
What kind of future does/. want to see? One where we're all accountable for creating food to feed plants and be chastised for it based upon "green" ideology? "Green" ideology which says food for plants is making the planet hotter because CO2 is a "greenhouse gas"? *ALL GASES IN THE ATMOSPHERE ARE GREENHOUSE GASES * because they all absorb some energy vs not having an atmosphere at all!
Oh gosh, where does on start.
I guess I'll take a simple approach.
Svante Arrhenius showed in 1896 that CO2 absorbs much more infrared radiation than Nitrogen or Oxygen, which is nice because it keeps our planet from being an ice ball. CO2 levels then were around 300 ppm.
CO2 levels today are about 400ppm, that is the highest they have been in 800,000 years. And no, CO2 levels weren't this high 800,000 years ago. That is just how far back we can go with ice cores.
Human activity, mostly burning fossil fuels, is pumping 36 gigatons of CO2 into the atmosphere each year.
If you don't buy human-caused climate change, explain to me which one of those facts you disagree with. Or explain to me how you interpret them. Reference: http://www.esrl.noaa.gov/gmd/c...
A lot of what puts a programmer on the far right-hand side of the curve (whatever curve you choose) is an "Aha!" type of ability to piece together better solutions and to make previously intractable bugs shallow. I don't know how you teach that ability but it is precious when you work with someone who has it.
A lot more time is spent on requirements, debugging, and debugging requirements than is spent on actually coding. In my experience a lot more of the "10x" performance comes from those other parts rather than coding. And if you have someone who seriously understands the problem and understands the platform you are targeting that someone can work (what appear to be) miracles.
Do we really know that all of the earthquakes triggered by this process will be small and inconsequential?
We don't really understand why injecting lots of wastewater into deep wells is causing earthquakes. One hypothesis I have heard is that the compressed wastewater is lubricating faults and making them more likely to release. But that is just one hypothesis. Without understanding the precise mechanism causing these earthquakes we can't really be certain that they will always be small earthquakes.
Naturally caused earthquakes follow a power-law distribution. If the same distribution works for these kind of earthquakes we haven't had enough time pass under these new conditions to know if there is a probable upper limit to the size of earthquakes triggered by wastewater injection.
This isn't a new idea. The drought just gives it currency. I'd point out that even in the best case it would take years to build, and if CA is going to go dry next year people there are going to have to live without water for years before such a hypothetical pipeline would be built.
It would be a nightmare to check ID's for little junk pre-paid phones and SIM cards in the store. No one really cares anyways.
Except when some whackjobs blow something up or kill someone and it turns out it was organized with prepaid phones then a lot of people are going to care a lot.
Kitsap County gets 49 inches a year, and averages 153 sunny days. So it's fair to say most of the time the weather is crappy, and from what I understand that tends to kill wireless performance.
Yes, it does. However, most of the rainfall is more like a heavy mist than a serious downpour, and doesn't trash your wireless performance that much. My own experience is that snowfall and ice build-up on the antenna have been a bigger problem than rain.
You can buy point-to-point wireless internet solutions which will give you up to 5km of range and around 50mb/s of bandwidth for $300 or so per end, so $600 total.
If that is his house, he has a bunch of trees around it which will block line of sight so he needs a tower-type antenna mount which he can buy for about $1000.
So all he needs to do is make arrangements with someone to be the other endpoint and he is in business. For less than $3000.
I'm not making this up. I managed to do this in a remote part of Washington state (where I still do not have a landline phone, the last time I checked CenturyLink wanted more than 25 grand to put in the phone service, even after I pointed out that I had put in extra copper wires they could use when I put in power to my home site) over sixteen years ago. My out-of-pocket costs were less than five grand.
What is going on is that companies are afraid of being sued for discrimination and so they write job descriptions that no one could possibly fill. That way they (theoretically) will be able to defend themselves when they hire whomever they want to and don't hire that other person because they "weren't qualified".
In practice this isn't really very effective, but lots of HR people believe it is.
My two favorite examples of this were a requirement of having a grad-level CS degree and being a graduate of the University of Hawaii... ironically UH didn't have a CS program at the time, as the person writing the job description knew. The other one was requiring five years of experience in Java... in 1995.
So the one hand it's inconceivable that Western powers can't tell an iridium signal from anywhere on earth. But on the other hand you admit Malaysia couldn't track widebody airliner flying across the country.
While I wouldn't equivocate the professionalism of american and Malaysian militaries, I think it shouldn't be surprising that neither is well equipped to succesfully deal with random, unpredictable scenarios that they've never encountered before.
It doesn't seem that unreasonable to me, If the transponder is off (somehow) air traffic control can't see the airplane. Military radar can, but until an emergency is declared or until the plane does something really weird any military is unlikely to do anything (re: Pearl Harbor, 9/11, Mathias Rust, &c). By the time they figured out the plane was missing the plane was long gone.
Having said that, this whole thing stinks.
A 100-ton airplane doesn't crash, even in the ocean, without leaving a lot of debris. A lot of stuff in a plane floats and by now some of that debris would have washed up somewhere. No debris has washed up.
A lot of the information about the aircraft's course and altitude changes after it ceased most communications turned out to be incorrect. Whether someone is lying or just clueless is unclear.
How and why the satellite data unit was shut down and later restarted is also unclear. Given that the unanimous consensus is that you cannot even do that from the cockpit (you have to get into the electronics bay, accessed by a hatch from the galley in front of business class) either there was a major malfunction or something really bizarre happened.
I haven't yet heard a good theory that explains what happened, but the least bad theory is that the plane was somehow diverted and probably ended up near the Baikonur Cosmodrome. Why and exactly how that happened is at best poorly explained, but the lack of debris indicates that the plane did not crash.
I'm thinking about '28 days later'. How long can one hide from the growing population of the diseased? The foraging option given in most stories will become exponentially difficult as food spoils and shops are looted by other survivors. Just like the movie, the best option is leaving town. This means the most valuable part of doomsday preparation is not gas masks and dried food but an exit strategy. If no authority has repaired infrastructure and established order after 5-7 days, it's time to exit any highly populated areas.
This strategy is going to work so well when you encounter the well-armed residents of small towns who are unlikely to welcome strangers who might be carrying a fatal disease and who are unlikely to have practical survival skills that said small town needs (strangers with survival skills, that is).
I doubt the modeling took into account that here in the South we defend our homes via the second ammendment against foreign invaders, tyrannical government AND zombies!
... which is nice except for the fact that Montana has a higher rate of gun ownership than any state in the old confederacy, and the third-highest overall (after Wyoming and Alaska). http://usliberals.about.com/od...
Back when I was an undergrad in that program they limited themselves to 100 undergrads. EE was a separate program.
And the CS department was in a very dumpy building right across from the Student Union building that was a notorious firetrap.` That was a couple of buildings ago. If I remember they remodeled their current building (the old EE building) in 2003.
There is a hellacious difference between an estimate and a deadline. A lot of the problem is abusing estimates and quietly or unconsciously turning an estimate into a deadline. The process for producing the two is totally different, or at least should be.
One very good manager I had would never directly ask me for an estimate. He would ask me how long it would take to figure out how long it would take to code x. If you can make a reasonable estimate of the size and complexity of the problem you are trying to solve you can begin to make a reasonable estimate of how long it will take. Without that information you are pulling numbers out of your ass.
One other good manager I had emphasized to me that estimates were, well, estimates. It was as big a problem if I always overestimated as it would be if I always underestimates.
It wouldn't surprise me if some consortium of obnoxious rich people (billionaires who own substantial amounts of Florida real estate are good candidates) and a low-lying country (my bet is on the Maldives) are just going to go distribute aerosols in the upper atmosphere.
The thing is, the actual volume of material you need to get into the stratosphere is not very large. A small jet flying eight or ten hours a week could do it. The problem is that most small business jets don't fly high enough to get effective distribution.
So you'd need to re-engine a gulfstream or two -- that's the big capital investment.
Someone could do this and not even need to ask permission.
A highly recommended, if a bit dated, book is _Normal Accidents_ by Charles Perrow. The sections on nuclear power plants are hair-raising reading.
The NRC used to have a rather frightening periodical called _Nuclear Safety_ which was also such hair-raising reading that it has been discontinued.
My observation is that accidents at nuclear plants seem to follow a power law, like earthquakes, where more severe incidents a less frequent. To me that means the people who argue that we really haven't had a "bad" accident yet or make special-case explanations for Chernobyl or Fukushima are missing the point -- we haven't had enough time yet to determine if far more catastrophic accidents are possible or not. A study of less major accidents, and accounts of the major ones, leads me to believe that we have just been very lucky so far. A great many of the accidents at nuclear power plants fall under what Feynman called "failure of design" where the system is not behaving in the way the engineers who designed the thing expected it to. That means we shouldn't have very much confidence at all in our ability to predict the probability of a catastrophic accident.
Some of the accidents and screwups at nuclear plants described in Perrow's book are just plain loony. One of the reactors at San Onofre was installed 180 degrees out of alignment and it took Southern California Edison seven months to notice. To correct this mistake they reversed the wiring in the control room. And such mistakes are by no means unique. At another plant overpressure in the reactor coolant led operators to somehow redirect hot, radioactive water into the drinking-water system at the plant -- what is a mystery to me is how can the two systems (reactor coolant and drinking water) possibly be connected? What is even more alarming is that there are such a bewildering array of ways for things to go wrong that there is very little commonality that lets us figure out how to do things better (not connecting drinking water to reactor coolant wouldn't be a bad start, and making sure the people building the plant read the plans wouldn't hurt either).
I've spent over a decade writing C++ code professionally for financial, insurance and CRM systems. So Stroustrup made a half-baked badly designed partially-OO langauge that has set back the evolution of real OO back at least two decades, and he gets an award? A kick in the ass would be more appropriate.
I have lost count of the number of times I have ran across a mess of C++ code where someone was trying to implement Smalltalk-style semantics in C++. Which doesn't work.
C++ rewards good design but brutally punishes poor designs. And most C++ coders aren't very good at designing clean class hierarchies. This means that most large C++ programs end up being insane vats of code goo after a few years.
Oh, and pet peeves...
The class mechanism in C++ is used to implement several incompatible concepts that would be best separated. One of these is "objects". Objects ideally are almost always used in pointer or reference context, use inheritance, and all public member functions and their destructor should be virtual (a class with a virtual function and a non-virtual destructor is a memory leak waiting to happen). Objects should almost never use operator overloading. Another concept is "values". Values use the copy-constructor and assignment operators, should almost never use inheritance (because getting a virtual assignment operator to work sanely is hard, and a virtual copy constructor isn't really possible) and might use operator overloading. Any case where these two concepts mix is very rarely good.
On the other hand, I can bill $1000/day telling people in painful detail that they have a screwed up mess of code. So C++ is at least rather lucrative for me.
If the safety feature enables the brakes when a crash is 'imminent', it takes away the driver's discretion during the times braking is not advisable.
During icy conditions, when I'd rather kill that deer instead of my family, or when a piece of black plastic blows across the roadway, are three that come to mind.
I have lived in 15 years in an area with a lot of deer, some elk, and some moose. Usually there are about 200 deer kills per years in the county. And there are notoriously icy and snowy roads in the wintertime.
About five years ago I hit a deer going about 45mph just outside of town. The deer came from the passenger side, hit the right front corner panel, and bounced up and left a basketball-sized hole with the deer head sticking through right in front of my face. The county sheriff said (and I agree) that if I would have been going 5mph faster I would have been killed. So I am all for such features.
And oh, if you are worried about icy roads your hi-tech car will almost certainly have anti-lock brakes and should have skid control (since that is just a software feature of your anti-lock brakes). So your fears about spinning out of control aren't very likely.
Why is war an assumed mandatory condition for space travelers? This is patently absurd (though perhaps fun in a game). Don't ya think we would have already located some extraterrestrials if there were wars going on in space? Or is this war thing predicated on humans being out there?
We are entrained to believe wars are inevitable, due to differences in opinion or scarcity of material. May I once again posit that war is not a natural result of being human, but rather one put upon mankind by strong, selfish, sociopaths that profit from it?
There is so much we don't know that we can't really assume one way or another. Face it, we don't even know if interstellar travel is even possible (and it is not at all clear that it is possible with our present technology, and reasonable travel times require technologies that we don't know about).
The Earth seems to be at just about the minimum size needed to have plate tectonics, which is needed to keep the planet habitable long enough for complex life to arise. If that is the case most of the "habitable" planets out there are quite a bit more massive. The downside to that is an intelligent species on even a slightly more massive planet will find space travel of any kind to be quite a bit more technically challenging than even we find it. They might even find it challenging enough that they cannot or will not even try at all. So even with us finding lots of "Earth-like" planets we still might not find extraterrestrials. So I'm not so sure we'd have located those extraterrestrials.
In a similar sense, while planets are probably common, really nice planets (with the right combination of reasonable gravity, low axial tilt, a big but not too big hydrosphere) might not be that common at all. They might, in fact, be damned rare. Certainly in that case such planets would be worth fighting over. Yes, if we have super-advanced technology, we can probably terraform a planet. But I'd hate to watch the terraforming process that would create reasonable 1 gravity on a world that was twice as massive as earth. And even a terraformed planet wouldn't be as nice a place to live as Earth still is.
During WWII the 'beeb sent messages to the resistance in occupied Europe. (examples at http://www.struthof.fr/en/test...... damn that is an insanely long url...). If I remember my history "innocuous" announcements in newspapers were used to send covert messages by all sides in the Revolutionary and Napoleonic wars.
Heck, if you controlled your own botnet (reasonable to do and a minor profit center for terrorists) you could put "random" text at the ends of your spams to confuse bayesian spam filters and piggyback coded messages in the random text as well.
Chaffing your messages this way has the bonus of making traffic analysis useless if you are sending your message to literally millions of people.
I will buy your argument when all climate change deniers move to Florida. It is my understanding that beachfront property there will be very inexpensive in the near future.
Can Tesla do something like pick a dealership and add conditions like, "must sell only tesla or only electric cars", "Tesla will retain the right to sell directly too" etc? Why are the standard auto makers not able to sell directly? Is it because A: the law stops them or B: They had signed exclusive agreements already. If Tesla starts with a clean slate, can it have dealerships and sell directly too? Or at least have some more balanced rights and decent negotiating position compared to the gas giants who are wimps against NADA.
Yes, Tesla could do all of that. Most dealers wouldn't sign such an agreement. For that matter, most dealers wouldn't want to sell an electric car.
Seriously, most existing car dealers don't know how to sell an electric car and make money at it. Since, for the most part, a Tesla requires far less maintenance than a modern internal combustion car, and since, for the most part, the biggest profit center in most car dealerships is the service center I can't see how the existing dealer networks can adapt to selling a Tesla or any other electric car.
Right now there is a dizzying patchwork of laws requiring automobiles be sold through dealers and not direct from the manufacturer. Historically, a lot of this was to protect local small businessmen (car dealers, who even today are quite well represented in local government). The other argument was that with a local dealer the purchaser of a car could also be sure his car could be serviced locally as well -- and since an electric car requires so much less service, that logic is kind of questionable.
Oh, and car dealerships (or any franchisee) can protect themselves from being undercut by the automaker by insisting on the same terms as any other dealer in their territory. There is also this thing called the Sherman Anti-Trust act that also prohibits undercutting your own dealers.
Slashdot Mirror
If I remember correctly, there was a product for Windows NT in the late 90's that seemed very similar to this announcement.
What the product basically did was wrap all of the system calls and blocked any privileged ones except if you intervened at the console -- and there wasn't any way to spoof the intervention. It was quite effective once you got it set up (obviously it is hard to boot your OS without *some* privileged system calls), and I never did look into it enough to get their definition of "privileged", although enough to get that if your web server ran at a least-privileged state the product would keep an exploiter from gaining administrator access.
Again, the product worked but never seemed to take off.
Wow, so /. is going to post monthly updates to CO2 but not monthly updates on the 18 years and 5 months of flat temperatures? The latter is news worthy, CO2 concentrations if you've been watching it, are jumping up and down as if life is consuming it. Like it was food for something which isnt human...
Meanwhile someone discovers a link between Sun pollution, magnatism, heat transfer between planets and the 'void' which may explain away "Dark Energy" as simply being sun pollution. Unspent electrons. Energy for star ships.
Yet /. is more focused on cutting off it's nose to spite its face?
What kind of future does /. want to see? One where we're all accountable for creating food to feed plants and be chastised for it based upon "green" ideology? "Green" ideology which says food for plants is making the planet hotter because CO2 is a "greenhouse gas"? *ALL GASES IN THE ATMOSPHERE ARE GREENHOUSE GASES * because they all absorb some energy vs not having an atmosphere at all!
Oh gosh, where does on start.
I guess I'll take a simple approach.
Svante Arrhenius showed in 1896 that CO2 absorbs much more infrared radiation than Nitrogen or Oxygen, which is nice because it keeps our planet from being an ice ball. CO2 levels then were around 300 ppm.
CO2 levels today are about 400ppm, that is the highest they have been in 800,000 years. And no, CO2 levels weren't this high 800,000 years ago. That is just how far back we can go with ice cores.
Human activity, mostly burning fossil fuels, is pumping 36 gigatons of CO2 into the atmosphere each year.
If you don't buy human-caused climate change, explain to me which one of those facts you disagree with. Or explain to me how you interpret them.
Reference: http://www.esrl.noaa.gov/gmd/c...
This.
A lot of what puts a programmer on the far right-hand side of the curve (whatever curve you choose) is an "Aha!" type of ability to piece together better solutions and to make previously intractable bugs shallow. I don't know how you teach that ability but it is precious when you work with someone who has it.
A lot more time is spent on requirements, debugging, and debugging requirements than is spent on actually coding. In my experience a lot more of the "10x" performance comes from those other parts rather than coding. And if you have someone who seriously understands the problem and understands the platform you are targeting that someone can work (what appear to be) miracles.
Do we really know that all of the earthquakes triggered by this process will be small and inconsequential?
We don't really understand why injecting lots of wastewater into deep wells is causing earthquakes. One hypothesis I have heard is that the compressed wastewater is lubricating faults and making them more likely to release. But that is just one hypothesis. Without understanding the precise mechanism causing these earthquakes we can't really be certain that they will always be small earthquakes.
Naturally caused earthquakes follow a power-law distribution. If the same distribution works for these kind of earthquakes we haven't had enough time pass under these new conditions to know if there is a probable upper limit to the size of earthquakes triggered by wastewater injection.
Actually "declined" is too polite a word.
This isn't a new idea. The drought just gives it currency. I'd point out that even in the best case it would take years to build, and if CA is going to go dry next year people there are going to have to live without water for years before such a hypothetical pipeline would be built.
It would be a nightmare to check ID's for little junk pre-paid phones and SIM cards in the store. No one really cares anyways.
Except when some whackjobs blow something up or kill someone and it turns out it was organized with prepaid phones then a lot of people are going to care a lot.
Kitsap County gets 49 inches a year, and averages 153 sunny days. So it's fair to say most of the time the weather is crappy, and from what I understand that tends to kill wireless performance.
Yes, it does. However, most of the rainfall is more like a heavy mist than a serious downpour, and doesn't trash your wireless performance that much. My own experience is that snowfall and ice build-up on the antenna have been a bigger problem than rain.
... and this guy doesn't need to sell his house.
You can buy point-to-point wireless internet solutions which will give you up to 5km of range and around 50mb/s of bandwidth for $300 or so per end, so $600 total.
If that is his house, he has a bunch of trees around it which will block line of sight so he needs a tower-type antenna mount which he can buy for about $1000.
So all he needs to do is make arrangements with someone to be the other endpoint and he is in business. For less than $3000.
I'm not making this up. I managed to do this in a remote part of Washington state (where I still do not have a landline phone, the last time I checked CenturyLink wanted more than 25 grand to put in the phone service, even after I pointed out that I had put in extra copper wires they could use when I put in power to my home site) over sixteen years ago. My out-of-pocket costs were less than five grand.
What is going on is that companies are afraid of being sued for discrimination and so they write job descriptions that no one could possibly fill. That way they (theoretically) will be able to defend themselves when they hire whomever they want to and don't hire that other person because they "weren't qualified".
In practice this isn't really very effective, but lots of HR people believe it is.
My two favorite examples of this were a requirement of having a grad-level CS degree and being a graduate of the University of Hawaii ... ironically UH didn't have a CS program at the time, as the person writing the job description knew. The other one was requiring five years of experience in Java ... in 1995.
So the one hand it's inconceivable that Western powers can't tell an iridium signal from anywhere on earth. But on the other hand you admit Malaysia couldn't track widebody airliner flying across the country.
While I wouldn't equivocate the professionalism of american and Malaysian militaries, I think it shouldn't be surprising that neither is well equipped to succesfully deal with random, unpredictable scenarios that they've never encountered before.
It doesn't seem that unreasonable to me, If the transponder is off (somehow) air traffic control can't see the airplane. Military radar can, but until an emergency is declared or until the plane does something really weird any military is unlikely to do anything (re: Pearl Harbor, 9/11, Mathias Rust, &c). By the time they figured out the plane was missing the plane was long gone.
Having said that, this whole thing stinks.
A 100-ton airplane doesn't crash, even in the ocean, without leaving a lot of debris. A lot of stuff in a plane floats and by now some of that debris would have washed up somewhere. No debris has washed up.
A lot of the information about the aircraft's course and altitude changes after it ceased most communications turned out to be incorrect. Whether someone is lying or just clueless is unclear.
How and why the satellite data unit was shut down and later restarted is also unclear. Given that the unanimous consensus is that you cannot even do that from the cockpit (you have to get into the electronics bay, accessed by a hatch from the galley in front of business class) either there was a major malfunction or something really bizarre happened.
I haven't yet heard a good theory that explains what happened, but the least bad theory is that the plane was somehow diverted and probably ended up near the Baikonur Cosmodrome. Why and exactly how that happened is at best poorly explained, but the lack of debris indicates that the plane did not crash.
ref: http://nymag.com/daily/intelli...
I'm thinking about '28 days later'. How long can one hide from the growing population of the diseased? The foraging option given in most stories will become exponentially difficult as food spoils and shops are looted by other survivors. Just like the movie, the best option is leaving town. This means the most valuable part of doomsday preparation is not gas masks and dried food but an exit strategy. If no authority has repaired infrastructure and established order after 5-7 days, it's time to exit any highly populated areas.
This strategy is going to work so well when you encounter the well-armed residents of small towns who are unlikely to welcome strangers who might be carrying a fatal disease and who are unlikely to have practical survival skills that said small town needs (strangers with survival skills, that is).
People have been holing up in the Flathead and Yaak River valleys (both to the West of the Park) for the last forty years or so waiting for the end.
I doubt the modeling took into account that here in the South we defend our homes via the second ammendment against foreign invaders, tyrannical government AND zombies!
... which is nice except for the fact that Montana has a higher rate of gun ownership than any state in the old confederacy, and the third-highest overall (after Wyoming and Alaska). http://usliberals.about.com/od...
Back when I was an undergrad in that program they limited themselves to 100 undergrads. EE was a separate program.
And the CS department was in a very dumpy building right across from the Student Union building that was a notorious firetrap.` That was a couple of buildings ago. If I remember they remodeled their current building (the old EE building) in 2003.
A couple of observations.
There is a hellacious difference between an estimate and a deadline. A lot of the problem is abusing estimates and quietly or unconsciously turning an estimate into a deadline. The process for producing the two is totally different, or at least should be.
One very good manager I had would never directly ask me for an estimate. He would ask me how long it would take to figure out how long it would take to code x. If you can make a reasonable estimate of the size and complexity of the problem you are trying to solve you can begin to make a reasonable estimate of how long it will take. Without that information you are pulling numbers out of your ass.
One other good manager I had emphasized to me that estimates were, well, estimates. It was as big a problem if I always overestimated as it would be if I always underestimates.
Some idiot is just going to do it.
It wouldn't surprise me if some consortium of obnoxious rich people (billionaires who own substantial amounts of Florida real estate are good candidates) and a low-lying country (my bet is on the Maldives) are just going to go distribute aerosols in the upper atmosphere.
The thing is, the actual volume of material you need to get into the stratosphere is not very large. A small jet flying eight or ten hours a week could do it. The problem is that most small business jets don't fly high enough to get effective distribution.
So you'd need to re-engine a gulfstream or two -- that's the big capital investment.
Someone could do this and not even need to ask permission.
There can be only one. Or, at least there should have been only one.
A highly recommended, if a bit dated, book is _Normal Accidents_ by Charles Perrow. The sections on nuclear power plants are hair-raising reading.
The NRC used to have a rather frightening periodical called _Nuclear Safety_ which was also such hair-raising reading that it has been discontinued.
My observation is that accidents at nuclear plants seem to follow a power law, like earthquakes, where more severe incidents a less frequent. To me that means the people who argue that we really haven't had a "bad" accident yet or make special-case explanations for Chernobyl or Fukushima are missing the point -- we haven't had enough time yet to determine if far more catastrophic accidents are possible or not. A study of less major accidents, and accounts of the major ones, leads me to believe that we have just been very lucky so far. A great many of the accidents at nuclear power plants fall under what Feynman called "failure of design" where the system is not behaving in the way the engineers who designed the thing expected it to. That means we shouldn't have very much confidence at all in our ability to predict the probability of a catastrophic accident.
Some of the accidents and screwups at nuclear plants described in Perrow's book are just plain loony. One of the reactors at San Onofre was installed 180 degrees out of alignment and it took Southern California Edison seven months to notice. To correct this mistake they reversed the wiring in the control room. And such mistakes are by no means unique. At another plant overpressure in the reactor coolant led operators to somehow redirect hot, radioactive water into the drinking-water system at the plant -- what is a mystery to me is how can the two systems (reactor coolant and drinking water) possibly be connected? What is even more alarming is that there are such a bewildering array of ways for things to go wrong that there is very little commonality that lets us figure out how to do things better (not connecting drinking water to reactor coolant wouldn't be a bad start, and making sure the people building the plant read the plans wouldn't hurt either).
I've spent over a decade writing C++ code professionally for financial, insurance and CRM systems. So Stroustrup made a half-baked badly designed partially-OO langauge that has set back the evolution of real OO back at least two decades, and he gets an award? A kick in the ass would be more appropriate.
I have lost count of the number of times I have ran across a mess of C++ code where someone was trying to implement Smalltalk-style semantics in C++. Which doesn't work.
C++ rewards good design but brutally punishes poor designs. And most C++ coders aren't very good at designing clean class hierarchies. This means that most large C++ programs end up being insane vats of code goo after a few years.
Oh, and pet peeves...
The class mechanism in C++ is used to implement several incompatible concepts that would be best separated. One of these is "objects". Objects ideally are almost always used in pointer or reference context, use inheritance, and all public member functions and their destructor should be virtual (a class with a virtual function and a non-virtual destructor is a memory leak waiting to happen). Objects should almost never use operator overloading. Another concept is "values". Values use the copy-constructor and assignment operators, should almost never use inheritance (because getting a virtual assignment operator to work sanely is hard, and a virtual copy constructor isn't really possible) and might use operator overloading. Any case where these two concepts mix is very rarely good.
On the other hand, I can bill $1000/day telling people in painful detail that they have a screwed up mess of code. So C++ is at least rather lucrative for me.
If the safety feature enables the brakes when a crash is 'imminent', it takes away the driver's discretion during the times braking is not advisable.
During icy conditions, when I'd rather kill that deer instead of my family, or when a piece of black plastic blows across the roadway, are three that come to mind.
I have lived in 15 years in an area with a lot of deer, some elk, and some moose. Usually there are about 200 deer kills per years in the county. And there are notoriously icy and snowy roads in the wintertime.
About five years ago I hit a deer going about 45mph just outside of town. The deer came from the passenger side, hit the right front corner panel, and bounced up and left a basketball-sized hole with the deer head sticking through right in front of my face. The county sheriff said (and I agree) that if I would have been going 5mph faster I would have been killed. So I am all for such features.
And oh, if you are worried about icy roads your hi-tech car will almost certainly have anti-lock brakes and should have skid control (since that is just a software feature of your anti-lock brakes). So your fears about spinning out of control aren't very likely.
Why is war an assumed mandatory condition for space travelers? This is patently absurd (though perhaps fun in a game). Don't ya think we would have already located some extraterrestrials if there were wars going on in space? Or is this war thing predicated on humans being out there?
We are entrained to believe wars are inevitable, due to differences in opinion or scarcity of material. May I once again posit that war is not a natural result of being human, but rather one put upon mankind by strong, selfish, sociopaths that profit from it?
There is so much we don't know that we can't really assume one way or another. Face it, we don't even know if interstellar travel is even possible (and it is not at all clear that it is possible with our present technology, and reasonable travel times require technologies that we don't know about).
The Earth seems to be at just about the minimum size needed to have plate tectonics, which is needed to keep the planet habitable long enough for complex life to arise. If that is the case most of the "habitable" planets out there are quite a bit more massive. The downside to that is an intelligent species on even a slightly more massive planet will find space travel of any kind to be quite a bit more technically challenging than even we find it. They might even find it challenging enough that they cannot or will not even try at all. So even with us finding lots of "Earth-like" planets we still might not find extraterrestrials. So I'm not so sure we'd have located those extraterrestrials.
In a similar sense, while planets are probably common, really nice planets (with the right combination of reasonable gravity, low axial tilt, a big but not too big hydrosphere) might not be that common at all. They might, in fact, be damned rare. Certainly in that case such planets would be worth fighting over. Yes, if we have super-advanced technology, we can probably terraform a planet. But I'd hate to watch the terraforming process that would create reasonable 1 gravity on a world that was twice as massive as earth. And even a terraformed planet wouldn't be as nice a place to live as Earth still is.
No, all of the climate change deniers will move to Florida to take advantage of the bargain prices on beachfront property.
During WWII the 'beeb sent messages to the resistance in occupied Europe. (examples at http://www.struthof.fr/en/test... ... damn that is an insanely long url...). If I remember my history "innocuous" announcements in newspapers were used to send covert messages by all sides in the Revolutionary and Napoleonic wars.
Heck, if you controlled your own botnet (reasonable to do and a minor profit center for terrorists) you could put "random" text at the ends of your spams to confuse bayesian spam filters and piggyback coded messages in the random text as well.
Chaffing your messages this way has the bonus of making traffic analysis useless if you are sending your message to literally millions of people.
I will buy your argument when all climate change deniers move to Florida. It is my understanding that beachfront property there will be very inexpensive in the near future.
Can Tesla do something like pick a dealership and add conditions like, "must sell only tesla or only electric cars", "Tesla will retain the right to sell directly too" etc? Why are the standard auto makers not able to sell directly? Is it because A: the law stops them or B: They had signed exclusive agreements already. If Tesla starts with a clean slate, can it have dealerships and sell directly too? Or at least have some more balanced rights and decent negotiating position compared to the gas giants who are wimps against NADA.
Yes, Tesla could do all of that. Most dealers wouldn't sign such an agreement. For that matter, most dealers wouldn't want to sell an electric car.
Seriously, most existing car dealers don't know how to sell an electric car and make money at it. Since, for the most part, a Tesla requires far less maintenance than a modern internal combustion car, and since, for the most part, the biggest profit center in most car dealerships is the service center I can't see how the existing dealer networks can adapt to selling a Tesla or any other electric car.
Right now there is a dizzying patchwork of laws requiring automobiles be sold through dealers and not direct from the manufacturer. Historically, a lot of this was to protect local small businessmen (car dealers, who even today are quite well represented in local government). The other argument was that with a local dealer the purchaser of a car could also be sure his car could be serviced locally as well -- and since an electric car requires so much less service, that logic is kind of questionable.
Oh, and car dealerships (or any franchisee) can protect themselves from being undercut by the automaker by insisting on the same terms as any other dealer in their territory. There is also this thing called the Sherman Anti-Trust act that also prohibits undercutting your own dealers.