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Cake day: June 27th, 2023

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  • blakestacey@awful.systemstoMoreWrite@awful.systemsQaD's: The Next Tech Bubble
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    2 days ago

    The issue of interpretation is wildly unresolved. Scratch any question in “quantum foundations”, and you end up in the territory of debates like whether mathematics is invented or discovered. Lovely fuel for online discussion threads, but by the same token, also exactly the kind of thing that many physicists try to ignore whenever possible. Even so, there are views that are very hard to argue for. The implication of Bell’s theorem (and a host of related results: Gleason, Kochen–Specker, …) is that you can’t find a consistent layer beneath quantum mechanics, not without something like a conspiracy of hidden causes propagating backwards in time. In other words, the hidden layer you postulate has to look baroquely nonclassical itself in order to be consistent with the real experimental data. 't Hooft occupies a position way out on the fringe, one that many people (including me) would say amounts to giving up on science and declaring that everything happens the way it does because Amon-Ra wills it.


  • I suppose one prominent thing is his book, Quantum Computing Since Democritus. I know of various other books about quantum information/computing, written from a physicist perspective. There are David Mermin’s Quantum Computer Science: An Introduction (Cambridge UP, 2007) and Eleanor Rieffel and Wolfgang Polak’s Quantum Computing: A Gentle Introduction (MIT Press, 2014). If anyone knows a decent undergrad introduction to Gödel incompleteness and its relation to the halting problem, that would probably cover a lot of the rest, apart from what I recall as rather shallow pseudophilosophical faffling. (I am going off decade-old memories and the table of contents here.)