On Wed, Dec 18, 2024 at 12:10 AM John Clark <[email protected]> wrote:

> *I quote from Wikipedia:  *
>
> *"Its [Bell's Inequality] derivation here depends upon two assumptions:
> first, that the underlying physical properties a0,a1,b0 and b1 exist
> independently of being observed or measured (sometimes called the
> assumption of realism); and second, that Alice's choice of action cannot
> influence Bob's result or vice versa (often called the assumption of
> locality)"*
>

The writer of this Wikipedia entry has made an elementary blunder. He has
confused the results of single measurements (a0, a1, b0, and b1) with the
expectation values. The proof of the CHSH inequality uses only expectation
values, so any assumption of Einstein realism is irrelevant.

Bruce

*Bell's theorem <https://en.wikipedia.org/wiki/Bell%27s_theorem>*
>

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