Comment by Lerc
1 hour ago
I don't believe this is true. Physics, as it is known to us, has uncaused random events.
They follow a probability, so you can simulate a universe that is compatible with the same rules and get a different result. This is essentially one of the arguments for a many worlds theory.
As far as I am aware, it only requires a probabilistic Turing machine, which is the same as a normal Turing machine (or a quantum computer) in terms of what it can compute.
Ultra precise simulation like that isn't in any case necessary, after all humans can create humans without needing 40 digit decimal places. Or create cars or computers etc without simulating everything down to each electron.