Talk:Bell's theorem

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Recent reverts[edit]

I have, like, no time or energy to put into this article now, but I did want to say that I think the text removed here is a bad addition. Squeezing every possible qualification into the paragraph that is supposed to be the most broadly comprehensible is a bad idea. The intro is already overlong; if anything, it needs to be condensed (and if we are to add any more to it, it needs to be condensed significantly first). Moreover, per house style, the intro is supposed to provide a capsule summary of the main article that follows, and putting emphasis upon a point that the main article doesn't is giving that point undue weight. (The article itself doesn't even say "noncontextual" until it gets into Gleason's theorem.) No doubt the page needs improvements, but I don't think this is one of them. XOR'easter (talk) 20:56, 27 February 2024 (UTC)[reply]

Without mentioning noncontextuality, the conclusion drawn is literally incorrect. In order to describe a theorem, one must state all of the hypotheses of the theorem. As written the article is misleading. Physicalisms (talk) 18:58, 7 March 2024 (UTC)[reply]

This isn't an issue of mathematics, it's one of language and technical writing. No one disagrees as to what the theorem is or what it fundamentally requires, but we have to explain it in the format of an encyclopedia article. It's fine to have an incomplete description after the end of the first paragraph.

(This reminds me tangentially of the saga where Wikipedians came to heartache and an ArbCom decision over the ordering and treatment of explanations in the Monty Hall problem article.) Remsense诉 19:37, 7 March 2024 (UTC)[reply]

The term "noncontextual" is confusing, and does not add anything. Roger (talk) 20:11, 7 March 2024 (UTC)[reply]

Mermin-Peres magic squares.[edit]

The Mermin-Peres magic square analysis seems missing here. As a simplified "game" it might make some of this more accessible.

Mermin and Peres both worked on simplified Bell models as summarized in:

Aravind, Padmanabhan K. "Quantum mysteries revisited again." American Journal of Physics 72.10 (2004): 1303-1307.

These models take the form of a "game" described in the common sense of a game but treated as in game theory. The wikipedia treatment of the Mermin-Peres magic square is buried inside Quantum pseudo-telepathy. Johnjbarton (talk) 17:59, 27 March 2024 (UTC)[reply]

I disagree. The rules of the game are more complicated, the proof of the local bound is more complicated, and the quantum strategy is much more complicated. The only good thing about the magic square is that the quantum probability of victory is 1. Which is rather nice but conceptually irrelevant for Bell's theorem, and in any case already covered by the GHZ game here. Tercer (talk) 19:55, 27 March 2024 (UTC)[reply]