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Cake day: March 22nd, 2024

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  • Much harder than you’d think, though there are some interesting schemes (like huge tanks filled with molten stuff, superconducting rings, giant flywheels). And there’s always a loss with storage.

    TBH having a diverse array of power sources (including a little storage) is much better.

    Also, batteries in electric cars are unfortunately extremely expensive, and extremely heavy. They’re less efficient than you’d think. Standardization and swappability (and reusing idle batteries for the grid) is a great idea, but even just focusing on the technical aspects, challenging.



  • It’s collapsing under propaganda and a cult of personality.

    The USA’s old ethos as a “champion of liberty,” rebel against tyrrany, equalizer (yes, I know) was at least admirable, and the indiviuality and greed were somewhat functional. The weight we’ve collapsed under is the populations collective susceptibility to runaway propaganda machines, which we have completely ignored both for the illusion of “freedom of speech” (even though online spaces are nothing like open forums) and blatant bribery.

    If Canda and Europe knew what’s good for them, they’d ban all American social media yesterday.









  • Good practice is putting anything important on an encrypted USB drive (as that stuff usually isn’t very big), and just treating the machine as “kinda insecure”

    If you set up a BIOS password, someone at least needs to unscrew your computer to get stuff. But this is generally not setup because people, well, forget their passwords…


  • Chatbots are text completion models, improv machines basically, so they don’t really have that ability. You could look at logprobs I guess (aka is it guessing a bunch of words pretty evenly?), but that’s unreliable. Even adding a “I don’t know” token wouldn’t work because that’s not really trainable into text datasets: they don’t know when they don’t know, it’s all just modeling what next word is most likely.

    Some non-autoregressive architectures would be better, but unfortunately “cutting edge” models people interact with like ChatGPT are way more conservatively developed than you’d think. Like, they’ve left tons of innovations unpicked.


  • Oh yeah, its more than that. Low weight helps acceleration, braking (so safety), handling, range, wear on every component, and most of all, cost. The same sized tires will need less pressure, wear much less, and grip harder. If the car is lighter, you don’t need as stiff a chassis, nor as much braking to lock the wheels, less battery, motor, which means you can take even more weight off the car… You get where I’m going.

    Racecars are fast because they are light, not because they have big engines and expensive bodies. Little 1500lb cars can lap a $3 million 1500hp (and quite heavy, because of all the stuff in it) Bugatti around a track.

    Heavy cars can handle OK, but the cost is big.