It's my understanding that that's exactly how quantum physics works. E.g. a particle has a fixed number of things it can do each moment. E.g move left or right,

It's my understanding that that's exactly how quantum physics works. E.g. a particle has a fixed number of things it can do each moment. E.g move left or right, or whatever. It's the aggregate combination of all these possibilities that produce the probability distributions we observe. But at some low level, there's just a uniform distribution over some number of possibilities.