Obviously we can’t prove this, but my instincts are that we don’t do things with probabilistic decision paths. Not very scientific of me, but I just don’t buy that’s how we make decisions.
Decisions making in our universe is a 1-dimensional slider between deterministic and random. That's it.
Write a program that makes non-deterministic, non-random (or any combination) decisions. You can't. It's like asking to create a new primary color.