Simulated Universes

“Assuming the simulators, or at least the early generations of them, have a very advanced knowledge of the laws of Nature, it’s likely they would still have incomplete knowledge of them (some philosophers of science would argue this must always be the case). They may know a lot about the physics and programming needed to simulate a universe but there will be gaps or, worse still, errors in their knowledge of the laws of Nature… [if so, then] we should expect occasional sudden glitches, small drifts in the supposed constants and laws of Nature over time…” ((Barrow, John D. “Living in a Simulated Universe: We explain why, if we live in a simulated reality, we might expect to see occasional glitches and small drifts in the supposed constants and laws of Nature over time.” http://www.simulation-argument.com/barrowsim.pdf))