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.
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.