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this post was submitted on 14 Jul 2024
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TechTakes
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Big brain tech dude got yet another clueless take over at HackerNews etc? Here's the place to vent. Orange site, VC foolishness, all welcome.
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there’s so much quantum woo in that article I want to sneer at, but I don’t know anywhere close to enough about quantum physics to do so without showing my entire ass
To me, the most sneerable thing in that article is where they assume a mechanical brain will evolve from ChatGPT and then assume a sufficiently large quantum computer to run it on. And then start figuring out how to port the future mechanical brain to the quantum computer. All to be able to run an old thought experiment that at least I understood as highlighting the absurdity of focusing on the human brain part in the collapse of a wave function.
Once we build two trains that can run near the speed of light we will be able to test some of Einstein's thought experiments. Better get cracking on how we can get enough coal onboard to run the trains long enough to get the experiments done.
Well a good thing to remember re quantum mechanics, Schrödinger Cat is intended as a thought experiment showing how dumb the view on QM was. So it is always a bit funny to see people extrapolate from that thought experiment without acknowledging the history and issues with it. (But I think that also depends on the various interpretations, and this means I'm showing a cheekily high amount of ass here myself).
Pretty much any mention of a thought experiment in the wild gets my hackles up. “Isn’t it cool that the cat is alive and dead at the same time?” Shut up! Shut up shut up shut up!!! Tho to be honest it might just be schrodinger’s cat that comes up. I wish they’d leave the poor cat alone, and stop trying to poison it.
I have a whole series of rants about that cat, starting with how it doesn't illuminate anything about quantum theory specifically — as opposed to probabilistic or stochastic theories in general — and culminating in "Hey, maybe we should stop naming things after pedo creeps."
Not surprised that a guy who thinks about poisoning cats is a creep!
What really gets me is that we never look past Schrödinger's version of the cat. I want us to talk about Bell's Cat, which cannot be alive or dead due to a contradiction in elementary linear algebra and yet reliably is alive or dead once the box opens. (I guess technically it should be "alive", "dead", or "undead", since we're talking spin-1 particles.)
There are some interesting ideas in that general direction (wrapping Bell inequalities within different new types of thought experiment, etc.), but some of the people involved have done rather a lot of overselling, and now bringing in talk of "AI" just obscures the whole situation. Which was already obscure enough.
If you want a serious discussion of interpretations of quantum mechanics, here is a transcript of a lecture "Quantum Mechanics in Your Face" which has the best explanation I've ever seen. I'd recommend the first 6 of Peter Shor's Quantum Computation notes (don't worry they're each very short) for just enough background to understand the transcript.
awesome! these are going straight to the list of things I should be reading