I was thinking about how to simulate physics in a “perfect” virtual world. Should I calculate all of the equations of quantum mechanics? Not really, cause “Physics is what everyone agrees will happen next”. You only need to measure the expectations of everyone. In this case, you “only” have to simulate minds instead of a whole universe. My article about it: https://medium.com/@thebojda/megaminds-abstract-evolution-and-the-consistency-machine-d2915a719443