I came across an experiment in a lab at university, bunch of lasers and mirrors on a table used to prove the future is deterministic, there is no free will, choice is an illusion, bound by fate, literally - was belief, is now fact
I bet he'd be more accepting today if he could see how thanks to all he hated about it, with QM we can now even answer longtime purely philosophical questions with a simple "yes/no"
He also refused to accept any worldview-changing implications of quantum physics and insisted it's not a literal description of reality, since it proves everything we take for granted to be wrong, but he was proven wrong..