With other things equal, an observer should reason as if they are randomly selected from a set of all possible observers with the same evidence. Thus, if there is an that an observer is simulated, you should think there is probability that you are simulated.

Rejection to Indifference Principle

  • If the only cases we have is the present situtation and some absurd situation, then we should have equal probability of each case. This seems like an absurd conclusion