>>11322983as far as I understand, if we assume hidden variables to explain away the apparent randomness of QM, they must really be in principle and forever hidden and not just currently inaccessible to us OR they would allow FTL signaling and therefore because of special relativity signaling backwards in time, which would have the obvious time travel problems. So the most reasonable assumption is that they are indeed hidden in this very strong sense. But if they are, then they have zero explanatory power for any potential observer's observations. The more parsimonious assumption is that they just aren't there. In fact depending on one's metaphysical views, one might argue that we basically defined them out of existence, a bit like in that Carl Sagan's analogy about the invisible dragon in the garage.
Even then you could always raise the bar for knowledge about QM indeterminacy - maybe FTl signaling really is possible for instance - however that is something you could always do with anything. It seems like the indeterminacy is nonetheless experimentally proved in a strong sense, insofar science ever prove anything, rather than being just an appeal to our current ignorance.
