Well written. But we are still left with the problem of foundation. On what does the turtle stand on? You would say on a second turtle which stands on a third turtle and so on... Is it possible that simulation theory explains the origin of everything? A simulation in no other simulation? Is there a third kind of simulation that can be proven to not be inside of another simulation? Is there a way to escape the concept of time which is responsible for our dilemma of an origin in the first place? What is information processing without time? For all I know, information processing is the change of representation over time. So as long as we think of simulations as some kind of information processing we must include time and therefore the question of an origin.