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Stories · 602
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Vigilante Engineer Stops Waymo From Patenting Key Lidar Technology (arstechnica.com)
An anonymous reader quotes a report from Ars Technica: A lone engineer has succeeded in doing what Uber's top lawyers and expert witnesses could not -- overturning most of a foundational patent covering arch-rival Waymo's lidar laser ranging devices. Following a surprise left-field complaint by Eric Swildens, the US Patent and Trademark Office (USPTO) has rejected all but three of 56 claims in Waymo's 936 patent, named for the last three digits of its serial number. The USPTO found that some claims replicated technology described in an earlier patent from lidar vendor Velodyne, while another claim was simply "impossible" and "magic." The 936 patent played a key role in last year's epic intellectual property lawsuit with Uber. In December 2016, a Waymo engineer was inadvertently copied on an email from one of its suppliers to Uber, showing a lidar circuit design that looked almost identical to one shown in the 936 patent.
The patent describes how a laser diode can be configured to emit pulses of laser light using a circuit that includes an inductor and a gallium nitride transistor. That chance discovery helped spark a lawsuit in which Waymo accused Uber of patent infringement and of using lidar secrets supposedly stolen by engineer Anthony Levandowski. In August 2017, Uber agreed to redesign its Fuji lidar not to infringe the 936 patent. Then, in February 2018, Waymo settled the remaining trade secret theft allegations in exchange for Uber equity worth around $245 million and a commitment from Uber not to copy its technology. "This includes an agreement to ensure that any Waymo confidential information is not being incorporated in Uber hardware and software," said a Waymo spokesperson at the time. That redesign now seems to have been unnecessary, says Swildens, the engineer who asked the USPTO to take a closer look at 936. "Waymo's claim that Uber infringed the 936 patent was spurious, as all the claims in the patent that existed at the time of the lawsuit have been found to be invalid," he said. Uber told Ars that despite the ruling, it would not be redesigning its lidars yet again. Swildensj, an employee at a small cloud computing startup, reportedly "spent $6,000 of his own money to launch a formal challenge to 936," reports Ars. "In March, an examiner noted that a re-drawn diagram of Waymo's lidar firing circuit showed current passing along a wire between the circuit and the ground in two directions -- something generally deemed impossible. 'Patent owner's expert testimony is not convincing to show that the path even goes to ground in view of the magic ground wire, which shows current moving in two directions along a single wire,' noted the examiners dryly."
"As I investigated the 936 patent, it became clear it was invalid due to prior art for multiple reasons," Swildens told Ars. "I only filed the reexamination because I was absolutely sure the patent was invalid." -
Facebook Is Not Protecting Content Moderators From Mental Trauma, Lawsuit Claims (reuters.com)
A former Facebook contract employee has filed a lawsuit, alleging that content moderators who face mental trauma after reviewing distressing images on the platform are not being properly protected by the social networking company. Reuters reports: Facebook moderators under contract are "bombarded" with "thousands of videos, images and livestreamed broadcasts of child sexual abuse, rape, torture, bestiality, beheadings, suicide and murder," the lawsuit said. "Facebook is ignoring its duty to provide a safe workplace and instead creating a revolving door of contractors who are irreparably traumatized by what they witnessed on the job," Korey Nelson, a lawyer for former Facebook contract employee Selena Scola, said in a statement on Monday. Facebook in the past has said all of its content reviewers have access to mental health resources, including trained professionals onsite for both individual and group counseling, and they receive full health care benefits. More than 7,500 content reviewers work for Facebook, including full-time employees and contractors. Facebook's director of corporate communications, Bertie Thomson, said in response to the allegations: "We take the support of our content moderators incredibly seriously, [...] ensuring that every person reviewing Facebook content is offered psychological support and wellness resources."
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Some Baltimore Residents Are Lobbying To Bring Back Aerial Surveillance (theoutline.com)
A local group in Baltimore argues that a plane providing real-time surveillance of the city will dial down police brutality. From a report: A piloted plane would fly over the city, capture images from 30,000 feet in the air, and use a computer program to stitch the photos together for a real-time, by-the-second portrait of what's happening on the ground. With access to all 911 dispatches, which provide information about the the time and place of a crime, local analysts could track the dot-like people and cars at the scene of a crime forward and backward in time until they arrive at a house or address. With a permit from the city of Baltimore, this surveillance system could access videos from street cameras and cross-reference their aerial data with precise, on-the-ground footage.
The analysts would then compose a PowerPoint report with visual data and a written explanation regarding the activities of all possible suspects or witnesses, and they send out five copies of that report via thumb drive: two copies go to the Baltimore police (one for an investigator, and one for evidence storage), and if the case goes to trial, two copies are given to the city prosecutor, and one copy is given to the defense. All of this could occur in just a few hours. Baltimore residents argue that a system like this is the only solution for a city grappling with high crime rates and a systemically corrupt police department. -
Google's Data Collection is Hard To Escape, Study Claims (cnn.com)
Citing a report [PDF] published on Tuesday by Digital Content Next and Vanderbilt University, CNN writes that "short of chucking your phone into the river, shunning the internet, and learning to read paper maps again, there's not much you can do to keep Google from collecting data about you." From the report: So says a Vanderbilt University computer scientist who led an analysis of Google's data collection practices. His report, released Tuesday, outlines a myriad ways the company amasses information about the billions of people who use the world's leading search engine, web browser, and mobile operating system, not to mention products like Gmail, platforms like YouTube, and products like Nest. Although the report doesn't contain any bombshells, it presents an overview of Google's efforts to learn as much as possible about people.
[...] Google collects far more data than Facebook, according to the report, and it is the world's largest digital advertising company. Its vast portfolio of services, from Android to Google Search to Chrome to Google Pay, create a firehose of data. Professor Douglas Schmidt and his team intercepted data as it was transmitted from Android smartphones to Google servers. They also examined the information Google provides users in its My Activity and Google Takeout tools, as well as the company's privacy polices and previous research on the topic. The researchers claims that almost every move you make online is collected and collated, from your morning routine (such as music tastes, route to work, and news preferences) to errands (including calendar appointments, webpages visited, and purchases made). "At the end of the day, Google identified user interests with remarkable accuracy," the report states. In a statement, Google said, "This report is commissioned by a professional DC lobbyist group, and written by a witness for Oracle in their ongoing copyright litigation with Google. So, it's no surprise that it contains wildly misleading information." -
Facebook Flat-Out 'Lies' About How Many People Can See Its Ads, Lawsuit Alleges (theregister.co.uk)
A new lawsuit claims that Facebook exaggerates how many people can see its ads, thereby defrauding advertisers. "In other words, it is alleged not quite as many eyeballs are seeing Facebook's ads as its salespeople charge for," writes Thomas Claburn via The Register. From the report: In a complaint filed on Wednesday in a US district court in Oakland, California, plaintiffs Danielle Singer and her company Project Therapy, LLC claim the Potential Reach and Estimated Daily Reach figures that Facebook provides to advertisers are wildly inflated. As an example, the complaint claims that Facebook's purported Potential Reach among 18-to-34-year-olds in each U.S. state is greater the actual population of 18-to-34-year-olds in each of those states.
"Based on a combination of publicly available research and Plaintiffs' own analysis, among 18-34 years-olds in Chicago, for example, Facebook asserted its Potential Reach was approximately 4 times (400 per cent) higher than the number of real 18-34 year-olds with Facebook accounts in Chicago," the complaint states. And in Kansas City, the complaint asserts, the number provided by Facebook was 200 per cent higher than the actual number of 18-to-54-year-olds with Facebook accounts in the area. What's more, the court filing contends that former Facebook employees, described as confidential witnesses, have acknowledged that Facebook is fine with inflated numbers. The attorneys representing Singer and her biz, which supposedly spent over $14,000 on Facebook ads, are seeking class-action certification in order to represent other affected Facebook advertisers. According to the complaint, "a former Facebook employee who worked in the infrastructure/mapping team stated that those who were responsible for ensuring the accuracy of the Potential Reach at Facebook were indifferent to the actual numbers and in fact 'did not give a sh--.'" They also said the "Potential Reach" statistic is "like a made-up PR number." -
Telescope Offers 'Clearest View Yet' of Milky Way - Including Plasma Filaments (ska.ac.za)
Chris Reeve writes: The MeerKAT radio telescope was inaugurated in South Africa this past Friday, revealing the clearest view yet of the center of the Milky Way. What is especially surprising about the produced image are the numerous prominent filaments which seem to appear in the foreground.
Herschel made a similar announcement just three years prior that "Observations with ESA's Herschel space observatory have revealed that our Galaxy is threaded with filamentary structures on every length scale." Intriguingly, close inspection of yesterday's SKA image show these filaments twisting around one another, yet without combining — a phenomenon observable in most novelty plasma globes when the filaments are conducting electricity... The SKA telescopes is one of the first telescopes to witness these filaments because it is 50 times more powerful than any former telescope, but also because it is apparently one of the few telescopes which can observe dark mode plasmas. For these reasons, the SKA telescope will inevitably revive the debate over the underlying physical reasons for filaments which exhibit coherent thin magnetic structure over light-year distances.
The original submission included a comment with more information about the theory of a plasma universe. -
Is C++ a 'Really Terrible Language'? (gamesindustry.biz)
Long-time Slashdot reader slack_justyb writes, "Jonathan Blow, an independent video game developer, indicated to gamesindustry.biz that while working on a recent project he stopped and considered how miserable programming can be. After some reflection Blow came to the realization as to why. [C++ is a] 'really terrible, terrible language.'"
The main flaw with C++, in Blow's opinion, is that it's a fiendishly complex and layered ecosystem that has becoming increasingly convoluted in its effort to solve different problems; the more layers, the higher the stack, the more wobbly it becomes, and the harder it is to understand.
"Blow is the developer of two games so far -- Braid and The Witness -- and developed a new programming language known as Jai in hopes to help C++ game developers become more productive."
With Jai, Blow hopes to achieve three things: improve the quality of life for the programmer because "we shouldn't be miserable like many of us are"; simplify the systems; and increase expressive power by allowing programmers to build a large amount of functionality with a small amount of code.
Long-time Slashdot reader xx_chris calls C++ "the triumph of syntax over clarity," while in the interview Blow calls C++ 'a weird mess.' But the original submission ends with these questions. "Is Blow correct? Has C++ become a horrific mess that we should ultimately relegate to the bins of COBOL and Pascal? Are there redeeming qualities of C++ that justify the tangle it has become?
"And is Jai a solution or just yet another programming language?" -
All-time Heat Records Are Being Set All Over the World (washingtonpost.com)
As the U.K. begins a two-week heat wave, one pedestrian apparently found his leg sinking into tarmac, which had melted, requiring a call to emergency rescue services.
"All-time heat records have been set all over the world during the past week," reports the Washington Post, in an article titled "Red-Hot Planet," which they've updated throughout the week with new all-time heat records. From the normally mild summer climes of Ireland, Scotland and Canada to the scorching Middle East to Southern California, numerous locations in the Northern Hemisphere have witnessed their hottest weather ever recorded over the past week.... The Canadian Broadcasting Corporation reports the heat is to blame for at least 54 deaths in southern Quebec, mostly in and near Montreal, which endured record high temperatures. In Northern Siberia, along the coast of the Arctic Ocean -- where weather observations are scarce -- model analyses showed temperatures soaring 40 degrees above normal on July 5, to over 90 degrees...
On Thursday, Africa likely witnessed its hottest temperature ever reliably measured. Ouargla, Algeria soared to 124.3 degrees (51.3 Celsius). If verified, it would surpass Africa's previous highest reliable temperature measurement of 123.3 degrees (50.7 Celsius) set July 13, 1961, in Morocco. No single record, in isolation, can be attributed to global warming. But collectively, these heat records are consistent with the kind of extremes we expect to see increase in a warming world.
Nasdaq Inc. even warned customers that high humidity in New Jersey was slowing the radio transmissions needed for high-speed trading, according to an article shared by Slashdot reader narcoossee. And Southern California has also experienced record-setting temperatures "well above 110 degrees across the region," sparking brush fires that burned homes in two counties.
Last July several U.S. cities experienced their hottest month ever, including Reno, Salt Lake City, and Miami. And Death Valley, California maintained an average temperature of 107.4 degrees for an entire month, the hottest month ever recorded on earth. "The temperature didn't fall below 89 degrees at any point in the month of July at Death Valley," reports the Washington Post, adding "On three nights, the 'low' temperature was 102-103 degrees."
And last month the Middle East city Quriyat (in Oman) endured more than two full days in which the temperature never dropped below 108.7 degrees. -
UK Launches National Dashcam Database For Snitching On Bad Drivers (cnet.com)
An anonymous reader quotes a report from CNET: Drivers in England and Wales now have a direct line to police for ratting on their fellow motorists, thanks to a new national dash cam database. The National Dash Cam Safety Portal, run by UK dashcam manufacturer Nextbase, lets drivers upload footage from their dashcam to a single database and send it directly to police, the BBC reports. Drivers can choose their region of England or Wales and send footage of accidents or illegal behavior on the road directly to local police, as well as sending a witness statement that can then be used in court.
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Uber Driver Kills His Passenger (washingtonpost.com)
An anonymous reader quotes the Washington Post: An Uber driver in Denver killed his passenger early Friday morning, telling a witness he had fired several times in self-defense, police said... Police say Michael Andre Hancock shot Hyun Kim, 45, with a semiautomatic pistol during a confrontation at 2:47 a.m. Friday, according to a partially redacted probable-cause affidavit provided to The Washington Post... Hancock does not have a criminal record in the state, the Denver Post reported. An Uber official said Hancock has been driving with the popular ride-hailing app for three years. His father, also named Michael Hancock, told KDVR-TV he had a permit to carry a concealed handgun. Putnam, the police spokeswoman, said she was unsure if that had been confirmed.
Company policy says riders and drivers cannot carry firearms in vehicles while using the ride-sharing app. Some states have regulations that override that prohibition, but in Colorado, which allows guns in vehicles to protect lives and property, the regulation for Uber users still applies, Uber spokeswoman Carly DeBeikes told The Post in a statement. Uber, rocked by allegations of inadequate screening and abuse among its drivers and corporate leaders, said Hancock's access to the app was removed
Uber was fined $8.9 million by Colorado regulators last year "for allowing 57 people with past criminal or motor vehicle offenses to drive for the company," reports the Denver Post. They note that in some cases Uber's drivers only had revoked or suspended licenses, while "a similar investigation of smaller competitor Lyft found no violations." -
Justice Department, FBI Are Investigating Cambridge Analytica (cbsnews.com)
An anonymous reader quotes a report from CBS News: The Justice Department and FBI are investigating Cambridge Analytica, the now-shuttered political data firm that was once used by the Trump campaign and came under scrutiny for harvesting data of millions of users, The New York Times reported on Tuesday. The Times, citing a U.S. official and people familiar with the inquiry, reported federal investigators have looked to question former employees and banks connected to the firm.
The Times reports prosecutors have informed potential witnesses there is an open investigation into the firm, whose profiles of voters were intended to help with elections. One source tells CBS News correspondent Paula Reid prosecutors are investigating the firm for possible financial crimes. A company that has that much regulatory scrutiny is almost guaranteed to have federal prosecutors interested, Reid was told. Christopher Wylie, a former Cambridge Analytica employee who spoke out about the data sharing practices, told the Times federal investigators had contacted him. The American official told the Times investigators have also contacted Facebook as a part of the probe. -
The Road to Deep Decarbonization (bnef.com)
Michael Liebreich, writing for Bloomberg New Energy Finance: In the past fifteen years we have witnessed several pivotal points along the route towards clean energy and transport. In 2004, renewables were poised for explosive growth; in 2008, the world's power system started to go digital; in 2012, it became clear that EVs would take over light ground transportation. Today I believe it is the turn of sectors that have resisted change so far -- heavy ground transportation, industry, chemicals, heat, aviation and shipping, agriculture. One after the other, or more likely as a tightly-coupled system, they are all going to go clean during the coming decades.
Astonishing progress is being made on super-efficient industrial processes, connected and shared vehicles, electrification of air transport, precision agriculture, food science, synthetic fuels, industrial biochemistry, new materials like graphene and aerogels, energy and infrastructure blockchain, additive manufacturing, zero-carbon building materials, small nuclear fusion, and so many other areas. These technologies may not be cost-competitive today, but they all benefit from the same fearsome learning curves as we have seen in wind, solar and batteries. In addition, in the same way that ubiquitous sensors, cloud and edge-of-grid computing, big data and machine learning have enabled the transformation of our electrical system, they will unlock sweeping changes to the rest of our energy, transportation and industrial sectors. -
Bad iPhone Notches Are Happening To Good Android Phones (theverge.com)
The Verge's Vlad Savov argues that Android smartphone manufacturers are copying the iPhone's design (specifically, the iPhone X's notch) with more speed and cynicism than ever before: I've been coming to Mobile World Congress for close to a decade now, and I've never seen the iPhone copied quite so blatantly and cynically as I witnessed during this year's show. MWC 2018 will go down in history as the launch platform for a mass of iPhone X notch copycats, each of them more hastily and sloppily assembled than the next. No effort is being made to emulate the complex Face ID system that resides inside Apple's notch; companies like Noa and Ulefone are in such a hurry to get their iPhone lookalike on the market that they haven't even customized their software to account for the new shape of the screen. More than one of these notched handsets at MWC had the clock occluded by the curved corner of the display. Asus is one of the biggest consumer electronics companies in the world, and yet its copycat notch is probably the most galling of them all. The Zenfone 5 looks and feels like a promising phone, featuring loud speakers, the latest Sony imaging sensor with larger-than-average pixels, and a price somewhere south of $499. I should be celebrating it right now, but instead I'm turning away in disgust as Asus leans into its copying by calling Apple a "Fruit Company" repeatedly. If you're going to copy the iPhone, at least have the decency to avoid trying to mock it.
It would be stating the obvious to say that this trend is not a good one. I'm absolutely of the belief that everyone, Apple included, copies or borrows ideas from everyone else in the mobile industry. This is a great way to see technical improvements disseminated across the market. But the problem with these notched screens on Android phones is that they're purely cosmetic. Apple's notch at the top of the iPhone X allows the company to have a nearly borderless screen everywhere else, plus it accommodates the earpiece and TrueDepth camera for Face ID. Asus et al have a sizeable "chin" at the bottom of their phones, so the cutouts at the top are self-evidently motivated by the desire to just look -- not function, look -- like an iPhone X. -
Scientists Discover a New Way To Use DNA As a Storage Device (betanews.com)
Mark Wilson shares a report from BetaNews: Researchers from the Waterford Institute of Technology (WIT) in Ireland have developed a way to use bacteria to archive up to up to one zettabyte in one gram of DNA. The technique uses double-strained DNA molecules called plasmids to encode data which is stored in the Novablue strain of the E Coli bacteria. The Novablue bacteria has a fixed location, making it viable for storage, and the data can be transferred by releasing a mobile HB101 strain of E Coli which uses a process called conjugation to extract the data. The antibiotics tetracycline and streptomycin are used to control this process. The method is currently not only expensive, but also slow. Data retrieval takes up to three days at the moment, but researchers believe it should be possible to dramatically speed up this process. Equipment already exists that can be used to write to DNA in seconds. Stability and security are also an issue right now, but it is very early days for the technique, and these current downsides are not viewed as being significant enough to write it off. Potential uses for this method of data storage that have been suggested include the recording of medical records in human DNA, and increasing the traceability of the food chain.
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Twitter Notifies 1.4 Million Users of Interaction With Russian Accounts (recode.net)
An anonymous reader quotes a report from Recode: At least 1.4 million people on Twitter engaged with content created by Russian trolls during the 2016 presidential election, the company revealed on Wednesday. That's more than double the amount that Twitter initially identified -- and perhaps still just a fraction of the full universe of users who may have witnessed Kremlin propaganda over that period. In announcing the new data in a blog post, Twitter also said it had notified all 1.4 million affected users that they saw election disinformation. That fulfilled a pledge that the company previously made to members of Congress who are investigating Russia's tactics on social media. Notified users included those that followed one of the roughly 3,000 accounts belonging to the Internet Research Agency, the troll army tied to the Russian government, as well as users who retweeted, replied, liked or mentioned those IRA accounts in their tweets. But Twitter did not alert users who merely saw Russian troll tweets in their feeds but did not interact with the content. Nor did it reach out to users who saw tweets from the roughly 50,000 Russian bots that tweeted election-related content around November 2016.
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Pedestrian Attacks Self-driving Car in the Mission (curbed.com)
An anonymous reader shares a report: Cruise AV, a self-driving car company owned by General Motors, reports that earlier this month an unidentified man in the Mission flung himself onto one of the company's autonomous vehicles while it was conducting a road test. According to a report filed with the California DMV (all companies testing self-driving cars on California public streets are required to make public reports any time an accident happens), the close encounter of the vehicular kind happened at 9:27 p.m. as the car was waiting to make a turn and "stopped at a green light in between crosswalks of Valencia Street and 16th Street, waiting for pedestrians to cross." The car's human driver says that a pedestrian then unexpectedly ran into the street against the traffic signal and "shouting....struck the left side of the Cruise AV's rear bumper and hatch with his entire body." The driver adds, "There were no injuries, but the Cruise AV sustained some damage to its rear light." No witnesses called the police.
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Ars Technica Puts Twitter, Uber On '2018 Deathwatch' (arstechnica.com)
The editors of Ars Technica have compiled their annual list of "Companies, tech, and trends least likely to succeed in 2018... Let's grab a Juicero and take a moment to reflect on the utter dumpster fires that we've witnessed over the past 12 months." Some of its highlights: Uber. "The company is losing billions of dollars a year, with no clear strategy for getting to profitability. Uber lost $2.8 billion in 2016 and will lose even more than that in 2017. Uber had $6.6 billion cash on hand in mid-2017 -- money that might not last much beyond the end of 2018... The company needs to find a way to stem its losses and get on the path to profitability before investors get frustrated and close their checkbooks..."
Twitter. "Still a money-losing concern. In 2016, it lost a mere $456.9 million, and its losses have continued in 2017 (though at a slightly less hemorrhagic pace). Still, on paper, the company is burning through the equivalent of a third of its cash on hand per year. And profitability (or an acquisition) is nowhere in sight..."
Net Neutrality. "It's not a company, but it's on deathwatch anyway..."
They also advise readers to "Pour out one for Radio Shack, which died even faster the second time around after what looked like a brave reboot" (though it's now getting another reboot). And they're bragging about their successful picks last year for the companies least likely to succeed in 2017.
"Yahoo has now been officially digested by Oath, a Verizon Company, its bits commingling with AOL's in a new, bizarrely named beast that for now bears the same logos... Yik Yak, the anonymous gossiping-messaging app that got banned by various universities for hate speech, is dead -- selling its intellectual property to Square, of all companies... Theranos is busy sending out thousands of refunds to Arizona residents, and the company has rented out its Palo Alto headquarters in an attempt to stay solvent until it can legally test blood again... BlackBerry doesn't make phones any more, having licensed its trademark and some of its tech to TCL. It is now a 'cybersecurity software and services company dedicated to securing the Enterprise of Things.'" -
People Who Know How the News Is Made Resist Conspiratorial Thinking (arstechnica.com)
An anonymous reader quotes a report from Ars Technica: Conspiracy theories, like the world being flat or the Moon landings faked, have proven notoriously difficult to stomp out. Add a partisan twist to the issue, and the challenge becomes even harder. Even near the end of his second term, barely a quarter of Republicans were willing to state that President Obama was born in the U.S. If we're seeking to have an informed electorate, then this poses a bit of a problem. But a recent study suggests a very simple solution helps limit the appeal of conspiracy theories: news media literacy. This isn't knowledge of the news, per se, but knowledge of the companies and processes that help create the news. While the study doesn't identify how the two are connected, its authors suggest that an understanding of the media landscape helps foster a healthy skepticism.
[...] "Despite popular conceptions," the authors point out, "[conspiratorial thinking] is not the sole province of the proverbial nut-job." When mixed in with the sort of motivated reasoning that ideology can, well, motivate, crazed ideas can become relatively mainstream. Witness the number of polls that indicated the majority of Republicans thought Obama wasn't born in the U.S., even after he shared his birth certificate. While something that induces a healthy skepticism of information sources might be expected to help with this, it's certainly not guaranteed, as motivated reasoning has been shown to be capable of overriding education and knowledge on relevant topics.
[...] As a whole, the expected connection held up: "for both conservatives and liberals, more knowledge of the news media system related to decreased endorsement of liberal conspiracies." And, conversely, the people who did agree with conspiracy theories tended to know very little about how the news media operated. -
Bitcoin Fees Are Skyrocketing (arstechnica.com)
An anonymous reader quotes a report from Ars Technica: The cost to complete a Bitcoin transaction has skyrocketed in recent days. A week ago, it cost around $6 on average to get a transaction accepted by the Bitcoin network. The average fee soared to $26 on Friday and was still almost $20 on Sunday. The reason is simple: until recently, the Bitcoin network had a hard-coded 1 megabyte limit on the size of blocks on the blockchain, Bitcoin's shared transaction ledger. With a typical transaction size of around 500 bytes, the average block had fewer than 2,000 transactions. And with a block being generated once every 10 minutes, that works out to around 3.3 transactions per second. A September upgrade called segregated witness allowed the cryptographic signatures associated with each transaction to be stored separately from the rest of the transaction. Under this scheme, the signatures no longer counted against the 1 megabyte blocksize limit, which should have roughly doubled the network's capacity. But only a small minority of transactions have taken advantage of this option so far, so the network's average throughput has stayed below 2,500 transactions per block -- around four transactions per second.
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Ask Slashdot: Biggest IT Management Mistakes?
snydeq writes: Sure, nobody's perfect. But for those in charge of enterprise technology, the fallout from a strategic gaffe, bad hire, or weak spine can be disastrous, writes Dan Tynan, in an article on the biggest management mistakes in IT. "Some of the most common IT gaffes include becoming trapped in a relationship with a vendor you can't shake loose, hiring or promoting the wrong people, and hiding problems from top management until it's too late to recover." What are some other career- and company-destroyers you've witnessed in your years in IT?