I'm trying to understand 3:02 in this video:
He seems to be saying that the measurement of a property one photon has no effect on the other. So the other photon doesn't change at all from before the measurement to after the measurement of the first photon? So it already had whatever property the experimenter measured before the measurement took place?
Isn't this precisely what Bell's Theorem shows isn't true?
The version of Bell's Theorem I'm using is stated here:
as "No physical theory of local hidden variables can ever reproduce all of the predictions of quantum mechanics."
I understand what Murray Gell Mann is saying in the video is that the other photon has certain pre-existing properties. We just learn about those properties when measuring on the first photon. Aren't those local hidden variables?