When two photons with entangled polarization go flying off in opposite directions and we measure the polarization of one of them, we do instantly learn the polarization of the other one—but there’s nothing mysterious or nonlocal about that, any more than there’s something mysterious or nonlocal about being able to instantly infer the time in Buenos Aires by looking at a clock in Beijing. And since there’s nothing nonlocal about this, there’s no longer any puzzle about why entanglement can’t be used for faster-than-light communication.
Interesting
