How Bell’s Theorem proved ‘spooky action at a distance’ is real

Re:How Bell’s Theorem proved ‘spooky action at a distance’ i... by danbmil99 on Wednesday July 21, 2021 @12:36AM (#27902387)

The balls in a bag experiment is exactly the kind that does use hidden variables that are local. No information has to be transmitted in either direction.

Bell showed that the correlation is even greater than you can get using that sort of thinking. Reality is more like this:

Bob and Alice each get a pair of bags, one black and one white. They open one of the bags in which they get either a red ball or a blue ball.

If they both choose the white bags, their balls are different colors. However if either or both of them choose the black bag, the colors of the balls are the same.

If you think about it, there's no way to put the balls in the bags to satisfy these conditions in all cases. This is a simplification of what's going on with Bell's theorem.

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Re:How Bell’s Theorem proved ‘spooky action at a distance’ i... by Epokhe on Wednesday July 21, 2021 @01:20AM (#27902596)

Thanks for the example. Could you point me to a resource where it explains why the reality is like that? If that’s an implication of a formula of quantum theory(which the article also mentioned briefly), I would like to learn about it and be able to derive this implication myself.

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Re:How Bell’s Theorem proved ‘spooky action at a distance’ i... by danbmil99 on Wednesday July 21, 2021 @02:47PM (#27910359)

A more fleshed-out & professional explanation can be found here:

https://www.scottaaronson.com/democritus/lec11.html

scroll down to the section titled Relativistic Causality

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Re:How Bell’s Theorem proved ‘spooky action at a distance’ i... by electrondood on Wednesday July 21, 2021 @01:19AM (#27902588)

This is an excellent analogy, thanks.

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