[ynniv]

The CHSH experiment measures more pairs of entangled photons passing through two similarly oriented polarizers than two orthogonal ones, regardless of the source's angle of polarization, though the effect is small enough that it can only be seen statistically. Rotating one observing polarizer should then cause an immediate change in the number of photons passing the other observing polarizer, regardless of distance. It seems absurd, but that's the current understanding.

[n4r9]

In the standard CHSH experiment, there is one detector on side A and one on side B, each with two possible settings. No matter what settings are used, the partial probability distribution for each side is uniformly random. However, the correlations between the two sides' outcomes are dependent on which settings are used.