I think if we're in a simulation, it's hard to do more than guess at what its properties are. We could try to use mathematics and computer science and physics t

I think if we're in a simulation, it's hard to do more than guess at what its properties are. We could try to use mathematics and computer science and physics to see what it looks like from inside, what seems possible to compute (making the probably good assumption that computation and math are universally true), etc. But if you get right down to it, a sufficently advanced/evil simulation could paper over whatever it wants just by modifying our brains, removing troublemakers from existence and memory, etc. Gives me the creeps thinking about it much.