Agreed. I think radioactive decay is an even better example of a well modeled physical system that defies simulation. A simulation of an ounce of decaying urani

Agreed. I think radioactive decay is an even better example of a well modeled physical system that defies simulation. A simulation of an ounce of decaying uranium won't tell you which atoms will decay in which order in a physical chunk. Ergo, somethings defy simulation.