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Joined 1 year ago
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Cake day: July 5th, 2023

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  • I don’t read it as magical energy created out of nothing, but I do read it as “free” energy that would exist whether this regeneration system is used or not, that would otherwise be lost as heat.

    With or without regenerative braking, the train system is still going to accelerate stopped trains up to operational speed, then slow them down to a stop, at regular intervals throughout the whole train system. Tapping into that existing energy is basically free energy at that point.






  • That article has basically been validated over time. At the time it was written, the argument was that monopoly is bad for consumers even if it makes prices cheaper, and that consolidation of producer market power needs to be understood as consumer harm in itself, even if prices or services paradoxically become better for consumers.

    It’s no longer a paradox today, though. Amazon has raised prices and reduced the quality of service by a considerable margin, and uses its market power to prevent the competition from undercutting them, rather than competing fairly on the merits.




  • With nuclear, you’re talking about spending money today in year zero to get a nuclear plant built between years 5-10, and operation from years 11-85.

    With solar or wind, you’re talking about spending money today to get generation online in year 1, and then another totally separate decision in year 25, then another in year 50, and then another in year 75.

    So the comparison isn’t just 2025 nuclear technology versus 2025 solar technology. It’s also 2025 nuclear versus 2075 solar tech. When comparing that entire 75-year lifespan, you’re competing with technology that hasn’t been invented yet.

    Let’s take Commanche Peak, a nuclear plant in Texas that went online in 1990. At that time, solar panels cost about $10 per watt in 2022 dollars. By 2022, the price was down to $0.26 per watt. But Commanche Peak is going to keep operating, and trying to compete with the latest and greatest, for the entire 70+ year lifespan of the nuclear plant. If 1990 nuclear plants aren’t competitive with 2024 solar panels, why do we believe that 2030 nuclear plants will be competitive with 2060 solar panels or wind turbines?


  • I don’t think that math works out, even when looking over the entire 70+ year life cycle of a nuclear reactor. When it costs $35 billion to build two 1MW reactors, even if it will last 70 years, the construction cost being amortized over every year or every megawatt hour generated is still really expensive, especially when accounting for interest.

    And it bakes in that huge cost irreversibly up front, so any future improvements will only make the existing plant less competitive. Wind and solar and geothermal and maybe even fusion will get cheaper over time, but a nuclear plant with most of its costs up front can’t. 70 years is a long time to commit to something.



  • Why has the world gotten both “more intelligent” and yet fundamentally more stupid at the same time? Serious question.

    Because it’s not actually always true that garbage in = garbage out. DeepMind’s Alpha Zero trained itself from a very bad chess player to significantly better than any human has ever been, by simply playing chess games against itself and updating its parameters for evaluating which chess positions were better than which. All the system needed was a rule set for chess, a way to define winners and losers and draws, and then a training procedure that optimized for winning rather than drawing, and drawing rather than losing if a win was no longer available.

    Face swaps and deep fakes in general relied on adversarial training as well, where they learned how to trick themselves, then how to detect those tricks, then improve on both ends.

    Some tech guys thought they could bring that adversarial dynamic for improving models to generative AI, where they could train on inputs and improve over those inputs. But the problem is that there isn’t a good definition of “good” or “bad” inputs, and so the feedback loop in this case poisons itself when it starts optimizing on criteria different from what humans would consider good or bad.

    So it’s less like other AI type technologies that came before, and more like how Netflix poisoned its own recommendation engine by producing its own content informed by that recommendation engine. When you can passively observe trends and connections you might be able to model those trends. But once you start actually feeding back into the data by producing shows and movies that you predict will do well, the feedback loop gets unpredictable and doesn’t actually work that well when you’re over-fitting the training data with new stuff your model thinks might be “good.”



  • Lol they will the second they get hit with that “you need to get parental consent” screen, that’s how it happened to us all.

    The normie services are increasingly tied to real world identities, through verification methods that involve phone numbers and often government-issued IDs. As the regulatory requirements tighten on these services, it’ll be increasingly more difficult to create anonymous/alt accounts. Just because it was easy to anonymously create a new Gmail or a new Instagram account 10 years ago doesn’t mean it’s easy today. It’s a common complaint that things like an Oculus requires a Meta account that requires some tedious verification.

    I don’t think it’ll ever be perfect, but it will probably be enough for the network effects of these types of services to be severely dampened (and then a feedback loop where the difficult-to-use-as-a-teen services have too much friction and aren’t being used, so nobody else feels it is worth the effort to set up). Especially if teens’ parent-supervised accounts are locked to their devices, in an increasingly cloud-reliant hardware world.


  • I wonder if someone could set up some form of tunneling through much more mundane traffic, perhaps even entirely over a legitimate encrypted service through a regular browser interface (like the browser interface for services like Discord or slack or MS Teams or FB Messenger or Zoom or Google Chat/Meet) where you can just literally chat with a bot you’ve set up, and instruct the bot to do things on its end, and then forward the results through file sending in that service. From the outside it should look like encrypted chat with a popular service over that https connection.


  • If you’re 25 now, you were 15 during the early wild west days of smartphone adoption, while we as a society were just figuring that stuff out.

    Since that time, the major tech companies that control a big chunk of our digital identities have made pretty big moves at recording family relationships between accounts. I’m a parent in a mixed Android/iOS family, and it’s pretty clear that Apple and Google have it figured out pretty well: child accounts linked to dates of birth that automatically change permissions and parental controls over time, based on age (including severing the parental controls when they turn 18). Some of it is obvious, like billing controls (nobody wants their teen running up hundreds of dollars in microtransactions), app controls, screen time/app time monitoring, location sharing, password resets, etc. Some of it is convenience factor, like shared media accounts/subscriptions by household (different Apple TV+ profiles but all on the same paid subscription), etc.

    I haven’t made child accounts for my kids on Meta. But I probably will whenever they’re old enough to use chat (and they’ll want WhatsApp accounts). Still, looking over the parent/child settings on Facebook accounts, it’ll probably be pretty straightforward to create accounts for them, link a parent/child relationship, and then have another dashboard to manage as a parent. Especially if something like Oculus takes off and that’s yet another account to deal with paid apps or subscriptions.

    There might even be network effects, where people who have child accounts are limited in the adult accounts they can interact with, and the social circle’s equilibrium naturally tends towards all child accounts (or the opposite, where everyone gets themselves an adult account).

    The fact is, many of the digital natives of Gen Alpha aren’t actually going to be as tech savvy as their parents as they dip their toes into the world of the internet. Because they won’t need to figure stuff out on their own to the same degree.




  • There’s some history here:

    SMS was ubiquitous in the United States long before smartphones. We didn’t have country codes to worry about, so anyone else in the United States was reachable in near real time over text, using an asynchronous, open, inter-carrier method of communication. If I had your phone number I could text you for free. Layered onto that was various automated systems over text (alerts, etc.). Later on, the carriers rolled out MMS for basic pictures being sent, group texts, etc.

    So when iPhones became popular here, the default method of communication was SMS/MMS. The iPhone user knew that it would work with dumb phones, Android phones, Windows phones, whatever. And those habits and those chat threads predated the rise of WhatsApp, FB Messenger, WeChat, Telegram, etc., and a lot of those apps simply didn’t work with old dumb phones. Why give up an existing group chat thread just because one of those friends didn’t have a smartphone yet?

    Then, whenever every member of a chat had an iPhone, the system automatically defaulted to the upgraded iMessage experience: high quality media sharing, typing/delivery/read notifications, reactions, etc. It was a slow transition, and didn’t start to show clear advantage over the open SMS/MMS standard until smartphones were ubiquitous, and where most people had iPhones.

    And so once everyone had a “it just works” app, they didn’t want to switch to an app that required everyone to get a separate account and download a separate app. Especially because the iPhone hit something like 80% market share among certain demographics (the young, the non-technical rich, etc.).