Did you read the OP? The whole question is about whether the apparent randomness in quantum mechanics means the universe is fundamentally nondeterministic. We c

Did you read the OP? The whole question is about whether the apparent randomness in quantum mechanics means the universe is fundamentally nondeterministic. We cannot make accurate predictions of measurements of quantum state apart from saying things like "A will happen with some probability, otherwise B will happen". It is that "with some probability" that is the question. (Yes, at the level of the macroscopic world we can make consistently accurate predictions, but physicists would say this is because we are operating at a scale where the statistical nature of quantum mechanics averages out, etc. Unless you are Carver Mead or one of the other wave guide kinds of guys who believe there actually is no randomness in QM and it is deterministic all the way down.)