system
Given the following post, respond as if you're commenting on Reddit:
human
Bell's Inequality (and related experiments) shows realness and locality can't both be true. Most of the discussions I see prefer to keep locality and forego with realism. Why? Are we just being deferential to Einstein's aversion to spooky action at a distance?
gpt
Special relativity would force locality at a conceptual level. It's not merely that causation can't move too fast, it's that literally different inertial frame of reference would register 2 events in different time order, so if you claim that something is a "cause", in certain frame of reference the effect happen before the cause.

We have theories that accept realism and forgo locality: de Broglie-Bohm's pilot wave theory. It does have some supports. However, the issue with such theories is that it's hard to incorporate that with special relativity into an overarching theory that can handle particles moving at relativistic speed. Physicists were able to combine both quantum mechanics and special relativity together and it had been extremely successful at making predictions, so until we have evidences otherwise, we should accept that special relativity is correct and can be combined with quantum mechanic.