Thanks for this. I was confused at the end of the essay as to what the Bell test was actually looking at. To wit, what's the 'rule' used to turn the rotating cr

Thanks for this. I was confused at the end of the essay as to what the Bell test was actually looking at. To wit, what's the 'rule' used to turn the rotating crystal photon result into a statement? The wikipedia page here https://en.wikipedia.org/wiki/Bell_test_experiments https://en.wikipedia.org/wiki/Bell_test_experiments has a coherent explanation of the Bell test, and a bunch of history on how scientists have tried to rule out the question of 'locality' confounding these tests. I seem to recall another related quantum explanation recently with graphs showing photons 'choosing' an open path, even when the 'closed' paths are down very long fiber optic cables, but I can't find the link right now.