That's not true. We have things like Bell's Theorem that indicates true randomness. Bell's theorem states: "No physical theory of local hidden variables can ever reproduce all of the predictions of quantum mechanics." Having hidden variables is also known as <i>counterfactual definiteness</i> or <i>realism</i> (not being snarky; that's what realism means in physics). Lacking hidden variables is not just determinism but superdeterminism.gamecreator wrote:And quantum physics can't indicate anything, as it is only a method to operate with random values. Nothing indicates that processes on quantum level are truly random. They can easily be seemingly random to us.
Counterfactual definiteness is the ability to say "if a tree falls in the forest, and nobody is around to hear it, then it still makes a sound" AND the ability to say "if a tree falls in the forest, and nobody is around to hear it, then it still makes no sound". Because an "if" statement is meaningless without counterfactual definiteness. The universe works the way it does not because of cause and effect, really, but because that's the way it works and it could be no other way. You can believe this, it's not entirely discarded by all, but it's definitely an indication that maybe things are truly random. Because I think it's even harder to say that "what-if scenarios have no meaning under any circumstances" than "some events are literally unpredictable even with perfect information".