I remember an argument, I think due to David Mermin, that refutes local hidden variables in a single measurement (as opposed to Bell's Inequality, which requires gathering statistics of many measurements). I know that's not a lot to go on, but I'm wondering if this rings a bell (no pun intended)? The idea was that there was a single measurement (or maybe a fixed finite number of measurements) such that the prediction of any local hidden variables theory was one thing, and the prediction of quantum mechanics was something else.(adsbygoogle = window.adsbygoogle || []).push({});

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# Mermin's One-Measurement Refutation of Local Hidden Variables

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