Wednesday, December 14, 2022
Elon Musk is the latest victim of the online ragetrap
Tesla shares have fallen 28% since Elon Musk took over Twitter, lagging other carmakers
Tesla shares have fallen 28% since Elon Musk took over Twitter, lagging other carmakers
Published Tue, Dec 13 2022
Tesla stock is faring poorly since CEO Elon Musk bought Twitter.
Musk sold billions of dollars’ worth of his Tesla holdings to finance the Twitter takeover and has been embroiled in controversy ever since.
Economic conditions and an aging product lineup have also contributed to pressure on Tesla’s share price.
CEO of Tesla Motors Elon Musk speaks at the Tesla Giga Texas manufacturing "Cyber Rodeo" grand opening party in Austin, Texas, on April 7, 2022.
CEO of Tesla Motors Elon Musk speaks at the Tesla Giga Texas manufacturing “Cyber Rodeo” grand opening party in Austin, Texas, on April 7, 2022.
Suzanne Cordeiro | AFP | Getty Images
Shares in electric vehicle maker Tesla have fallen 28% since October 27, when CEO Elon Musk bought Twitter and appointed himself “Chief Twit,” or CEO, of the social media business.
By way of comparison, other major automakers like Ford, GM and Volkswagen are slightly up since Oct. 27, as is BYD, a Chinese company that makes electric vehicles and batteries. U.S. electric truck maker Rivian has fallen by 27% over that period.
On Tuesday, Tesla shares closed at $160.95, down more than 4% for the day. It was a rare exception among growth-oriented tech stocks, which mostly rose after cooler-than-expected inflation data came out early in the morning.
Fmr. Ford CEO Mark Fields on what Tesla's challenges may mean for legacy automakers
The decline in Tesla stock price has prompted the company’s largest retail shareholder Leo Koguan, who is a billionaire and founder of the IT services firm SHI International, to call for the company’s board to “perform shock therapy to resuscitate stock price,” namely by way of a share buyback.
Musk sold billions of dollars’ worth of his Tesla holdings to finance the Twitter takeover. Since he took over the company, Musk has been regularly posting incendiary tweets, especially aimed at people who hold center-to-left political values, and whom Musk often paints as enemies with a “woke mind virus.”
For example, Musk took aim at Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci, and trans people, tweeting over the weekend: “My pronouns are Prosecute/Fauci.”
The offensive tweet drew over 1 million “likes” on Twitter, where Musk has over 120 million listed followers, as well as criticism from the White House, and from former CIA director John O. Brennan. White House press secretary Karine Jean-Pierre called Musk’s tweets about Fauci “incredibly dangerous” personal attacks.
Kristin Hull, Nia Impact Capital founder and a Tesla shareholder, wrote on Twitter following that: “So many issues with the Tesla brand, when the board can’t rein in the CEO.”
Economic conditions and an aging product lineup have also contributed to pressure on Tesla’s share price. Tesla has delayed mass production of its sci-fi-inspired, trapezoidal pickup truck, the Cybertruck. Tesla originally showed off the Cybertruck design in 2019, at which time the company expected to start production in 2021.
The company held an event at its Nevada battery factory to mark the start of deliveries of its fully electric, heavy-duty Semi truck last month. At the event, Tesla execs including Elon Musk made no mention of previously touted self-driving tech, a million-mile warranty they had previously teased, a price for the Semi, nor any anticipated production numbers.
Tesla is also facing backlash over a years-long delay in delivering self-driving technology through software updates to its customers’ cars. Customers are increasingly suing Tesla in the U.S. to attain refunds for self-driving systems they paid for and expected to be delivered already.
Tesla markets its driver assistance systems as Autopilot, Enhanced Autopilot and Full Self-Driving capability in the U.S. None of these systems make its cars safe to drive without a human behind the steering wheel, attentive to the road and driving task at all times.
The California DMV is investigating Tesla and has formally complained that it has engaged in false advertising around these systems.
Some Tesla fans see the plummeting stock price as a buying opportunity, despite Musk’s new distraction with Twitter.
The company is ramping up production at a new vehicle assembly plant in Austin, Texas, and another one outside of Berlin. The company has brought Shanghai Manufacturing leader Tom Zhu to the states to help mature the Austin operation.
Seawater electrolysis ignites new hope for affordable green hydrogen
Seawater electrolysis ignites new hope for affordable green hydrogen
Researchers in China claim their technique bypasses the need for desalination
© Andy Carter
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The writer is a science commentator
Hydrogen has long been viewed as a miracle fuel of the future. It does not appear on its own in nature but is partnered with other elements in compounds such as water and methane. The flammable element, which produces water when burnt, is touted as a potential clean energy source for heating, industrial and agricultural use, and long-distance transport where electrification is difficult.
One way of harvesting it is via electrolysis, which uses electricity to split water into its constituent elements, hydrogen and oxygen. Now researchers in China claim to have produced hydrogen by splitting seawater without the need to desalinate or purify it first, according to a report in Chemistry World.
Since seawater accounts for more than 96 per cent of the world’s water, this could be a significant step on the path to making green hydrogen (that produced using renewable energy) affordably. “What they’ve done is really quite challenging from a chemistry perspective,” explains Professor Alex Cowan, researches sustainable fuels at Liverpool University in the UK, and who last year co-authored a cost-benefit analysis on direct seawater electrolysis. “This technology hits a potential niche market that hasn’t been addressed before.”
Splitting water using electrolysis is relatively straightforward, and is already done in some hydrogen-generating facilities with access to a conventional water supply. The process, which takes place in an electrolyser, electrically separates hydrogen from oxygen and allows the hydrogen to be siphoned off. But with seawater this is more complicated because salt and other impurities can effectively destroy the electrolyser.
One option is to desalinate and purify seawater before processing it — but in some settings that can add cost. Another option is to treat the electrolyser components chemically to avoid corrosion, but that is viewed as impractical.
Now Heping Xie at Shenzhen University and Zongping Shao at Nanjing Tech University have come up with a workaround. They kept the electrolyser separate from the seawater with a waterproof, breathable membrane. A bit like a sieve, the membrane keeps anything other than pure water vapour from entering the electrolyser. As the water vapour is drawn in and converted to hydrogen, more is pulled in from the seawater to take its place. It is, they reported recently in the journal Nature, a self-sustaining system.
The scientists installed a prototype in China’s Shenzhen Bay, and produced more than 1mn litres of hydrogen over 133 days without any reported deterioration. “Running it for more than 3,000 hours sets a new benchmark in stability,” Cowan says.
One potential application could be for offshore wind to power seawater electrolysers, with the resulting hydrogen being transported back to land. A similar idea lies behind the Gigastack project in the Humber estuary, off the northern English coast: offshore wind is being used to power electrolysers, with the hydrogen being used at the Humber refinery.
Hydrogen, which accounts for about 2 per cent of the global energy market, is undergoing something of a renaissance, having been subjected to the same cycle of hope and hype that has characterised research into nuclear fusion. That latter technology is progressing at speed, emphasised by Tuesday’s announcement from the Lawrence Livermore National Laboratory confirming a milestone in energy output.
Unlike fusion, however, commercial hydrogen production already exists, mostly using fossil fuels, such as extraction from methane. The big challenges lie in scaling up, cutting cost and lowering the carbon footprint. Current electrolysers, for example, work at the megawatt, rather than gigawatt, level. The UK’s hydrogen strategy seeks to double the target for low-carbon hydrogen output to 10GW by 2030, as an intermediate step to net zero.
The bid to green the hydrogen industry is leading to strategic bets elsewhere. The Hydrogen Shot initiative was launched in the US last year to bring down the cost of green hydrogen to $1 per kilogramme in a decade. The EU, as part of its hydrogen strategy, has a 10-year plan to build hydrogen infrastructure, including transport networks and fuelling station. The bloc also hopes green hydrogen can replace natural gas in polluting industries like steel production.
Most important, perhaps, the cost of renewable energy needed to produce green hydrogen is falling. It may take another decade to separate the hope from the hype but, for now, the flame for a cleaner, hydrogen-fuelled future has a healthy glow.
Tuesday, December 13, 2022
Why hasn’t technology disrupted higher education already?
Why hasn’t technology disrupted higher education already?
Matthew Yglesias — Read time: 10 minutes
Why hasn’t technology disrupted higher education already?
The key question about AI and school is about the past
There’s a lot of interest in the question of how large language models may impact education. I don’t have the answer, but I think there’s a more fundamental question worth considering: why have the past 50 years of technological change had so little impact on schooling?
The English word “lecture” derives from Medieval Latin’s “lectura” and is cognate with words like “lecteur” (French) and “lector” (Spanish) which mean “reader.” A lecturer, in other words, is a reader.
Today, giving a lecture that consisted of simply standing at a podium reading a book would be considered bad practice. But several hundred years ago, books were extremely expensive because hand-copying manuscripts doesn’t scale. What does scale, at least to an extent, is the human voice. So an institution could serve the very useful function of providing a place where students could gather to hear a person read out loud from a book and write down what the lecturer was saying, securing knowledge.
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An institution like that would need to have a lot of books on hand and a scholar would need ready access to books, so producing scholarship was highly complementary to lecturing. The scholars take books as inputs but also produce books as outputs. To earn money, they would lecture — which is to say, read the books — to students. The students themselves would benefit not only from learning about what the books say but also from some kind of formal certification. And thus was born the familiar university bundle that combines libraries, scholarship, teaching, and certification.
This is a somewhat rickety pile of in-principle-separate ideas that really does seem vulnerable to technological disruption. On its face, the relevant disruptive technology should have been the printing press, and the disruption should have happened three or four hundred years ago. But not only did the basic structure of the university persist, but most of the world’s leading universities are also much newer than the printing press. Harvard and Yale are really old by the standards of American institutions, but they’re not older than printing — and many other prestigious American universities date from the second half of the nineteenth century. By the time Stanford and the University of Texas were founded, it was already extremely clear that people could study books at home (or in libraries) and then take exams administered by certifying bodies that had nothing to do with teaching or research.
None of this is to say that large language models won’t disrupt traditional education, just to observe that education has been more resilient than one might think.
Learning has gotten much cheaper
While the price of education has infamously gone up a lot over the past 50 years, the price of learning has clearly gone down.
At one point back in the pre-vaccine days of Covid-19, our dishwasher stopped working. I am the opposite of a handy person, and I had no idea how to deal with this myself. But I Googled. And sure enough, there are multiple YouTubers operating in the home appliance repair space with sufficient specificity and dummy-friendliness that I was able to fix it.
More recently, I got a little idly curious about why the bokeh (those out-of-focus points of light in movies) sometimes consists of circles and other times ovals. It turns out to have to do with whether the camera lens is spherical or anamorphic. That led me down a YouTube rabbit hole on the history of anamorphic lenses, which were originally developed in order to make it possible to display films with a wide aspect ratio. The anamorphic lens essentially squeezes a wide image onto a square piece of film, and then an anamorphic projector unsqueezes it. These lenses have a variety of other optical characteristics — including oval bokeh, prominent lens flares, focus breathing, and other more subtle effects. In the modern day, it is perfectly possible to make a widescreen film with a spherical lens. But in part because of the historical legacy of anamorphic shooting of movies (but not still photography or television shows), anamorphic visual artifacts lend films a “cimematic” look. So many cinematographers continue to prefer anamorphic lenses even though they’re not necessary, and some filmmakers who aren’t using anamorphic lenses insert anamorphic-style lens flare to achieve a more cinematic effect, even in animation.
The point is, I learned a lot about lenses. And I learned it all for free, from YouTubers who were making videos to sell ads or to do affiliate marketing for lenses and other camera equipment. And when Matt Zeitlin tweeted about split diopters, I already knew where to go for more information about camera lenses.
Now I’m not going to say that watching these YouTubes is an adequate substitute for going to film school or apprenticing with a working cinematographer. But the fact is that today it is possible to learn a lot of things quickly and easily relative to 1992.
By the same token, my DIY dishwasher repairs still left the machine in less-than-perfect working order, and after about a year and a half of limping along, it was totally busted. I think it’s conceivable that someone with better training than me could have fixed it better. But the fact remains that a miraculous quantity of information is at our fingertips. If you want to learn how to tie a bowline knot (useful for dragging a dinghy behind your sailboat without the knot becoming so tight it can’t be untied) or what happened with the Great Vowel Shift in early modern English, the internet has your back. Learning is easier than ever!
And yet, in practice, learning is still hard.
In-person instruction has unique value
I lift weights regularly with a personal trainer. A person obviously could lift heavy things without a personal trainer and still get stronger, though of course if you just pick up some heavy weights with absolutely no knowledge, the odds are overwhelming that you’ll waste your time or injure yourself. But the basic information has long been available in books and magazines and on home video since before the existence of the internet. Today, we have weightlifting YouTube, we have Apple Fitness+ — we have tons of highly efficient alternatives to paying someone to watch you lift heavy things.
But the trainer is helpful not just for learning but for motivation. I consistently lift more for longer with a trainer. The trainer pushes me to do more, she provides a safety function, and more importantly, the fact that the trainer is there denies me the excuse of some safety concern as a reason to stop.
I think precisely because these are the ways the trainer adds value, the strongest, fittest people at the gym generally aren’t relying on trainers, at least not all the time. They just have a gym rat temperament, a lot of detailed knowledge, and a lot of strong muscles. Whether innately or through cultivation, they have the kind of mindset where they push themselves without external stimulus.
Precisely for that reason, they’re stronger than me and in better shape than I am. And a sort of naive read on the situation would be to say that if we look at the people who are really strong, they show that inefficient, non-scalable personal training has been disrupted by whatever hobbyist forums or other internet resources they rely on.
In the real world, though, that doesn’t work at all. I got sincerely interested in this lens stuff so I learned a lot about it, but I am not sincerely interested in exercising — I dislike it and lack inherent motivation. Instrumentally, though, I want to be a healthy person, and the in-person instructor is a tremendous motivating tool.
Tech improvements don’t solve the problem
A decade ago there was tremendous hype around the potential for Massive Online Open Courses (MOOCs) to replace traditional classroom instruction. Then it turned out that online for-profit colleges were mostly good for running scams on marginal students. The problem with MOOCs for the typical student is the same as with me trying to lift weights on my own: for people who have a second-order desire to get a degree despite a lack of temperamental suitability for school, the in-person instructor is invaluable. We learned that lesson all over again during the pandemic when a lot of districts went remote with bad effects. Motivation and self-discipline are valuable commodities, and an in-person instructor can help provide them.
I do think it’s fair to say that internet video is a step forward from VHS or simple text files on the web, and all of that is a step forward from print as the only medium for conveying information. And the printing press itself was, of course, a huge step forward.
It’s very easy to imagine chatbots improving on Google search as a way to look stuff up, and AI-powered individual coaching could be even more powerful than videos as a way to learn things.
But I do think the history of ed tech has been one where better and better information technology makes it much easier to learn things without really making much progress on the big problems of education, because the motivation/discipline piece of education is so central. In practice, I think the net impact of IT improvements on education has probably been negative. Today’s smartphone is a much more powerful and convenient learning tool than the public library of 30 years ago. But the 1992-vintage public library really did work very well. And today’s smartphone is also a much more powerful tool of distraction than anything that was available in 1992. Educators’ jobs have probably gotten harder rather than easier, not despite but because of the improvements in information technology.
The revolution, if one comes, is likely to be in the value of the learning itself rather than in how it’s done.
De-skilling is very real
My whole life has been an era of relatively slow productivity growth and misguided fears about technologically induced unemployment.
I think people today are generally aware of those macro facts, which in turn leads them to ignore some important micro facts. Something that I learned as a kid, both at summer camp and because my mom was a skilled photographer, was how to develop black and white film and make black and white photo prints. By the time I got to college, this skill set was clearly on the way out, but analog cameras still took much better photos than digital ones. I worked on a campus alt-weekly paper that had its own darkroom, and even though I wasn’t in the photo department, I was interested in photography and would sometimes pitch in and help out with darkroom stuff. I learned how to burn and dodge prints, about different chemicals, and how to use the negative scanner.
Once upon a time, these skills would’ve had real market value.
Now to be clear, it’s not like I was ever a superstar photo developer or that this was an incredibly lucrative line of work. But it was a real job skill and I did in fact learn to do it just fine. I would have been qualified, 22 years ago, for a non-minimum wage job that involved specialized skills and had nothing to do with writing. Today, that’s no longer the case.
Back in 1996, Paul Krugman wrote a column pretending to look back from 2096 and one of his predictions was that advances in information technology would lead to a huge decline in the monetary value of education.
Eventually, the eroding payoff of higher education created a crisis in education itself. Why should a student put herself through four years of college and several years of postgraduate work to acquire academic credentials with little monetary value? These days, jobs that require only 6 or 12 months of vocational training — paranursing, carpentry, household maintenance and so on — pay nearly as much as if not more than a job that requires a master's degree, and pay more than one requiring a Ph.D.
He envisioned this as leading to a huge decline in college enrollment, and thus a huge decline in the demand for economics professors like himself. Krugman-in-the-fiction was employed as a veterinarian and wrote essays about economics as a hobby. Even with veterinary medicine, though, the contemporary practice basically mixes two different things. One is that a vet has a knowledge base that can let her diagnose ailments and prescribe courses of treatment. The other is that the vet can just deal with the animal as a physical object that exists in the world and requires a certain delicacy of handling. Right now, we seem closer to a world in which computers can substitute more for the knowledge function than for the physical one. This would mean vets continue to be in high demand, but the practice of veterinary medicine becomes de-skilled — not something that can be done without training, but something that can require less training than today’s vets have.
And that would be the real revolution in education. The past couple of centuries have seen a steady increase in the market demand for certain kinds of skills. That’s meant people want to acquire these skills even if they don’t necessarily have tons of inherent motivation — they want training to earn a better living, and education as a formal process is a very useful motivational crutch. It’s at least possible that the next twist in IT will be to rapidly erode the demand for that kind of education, meaning people will be left primarily to learn things they are curious about where there is much less need for external motivation.
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