Time-travel doesn’t make the universe uncomputable, is the thing.
Time-travel makes certain laws of physics uncomputable, but there are any number of equivalent, far more complex sets of laws that would look the same to humans but remain computable—Eliezer’s mind is running one, for starters. When writing a simulation, you would use one of those.
Time-travel doesn’t make the universe uncomputable, is the thing.
Time-travel makes certain laws of physics uncomputable, but there are any number of equivalent, far more complex sets of laws that would look the same to humans but remain computable—Eliezer’s mind is running one, for starters. When writing a simulation, you would use one of those.