I mean, that’s not clear. It may be that anything which would obviously be interpreted by an outside viewer as “weird simulation stuff” would just be “advanced

I mean, that’s not clear. It may be that anything which would obviously be interpreted by an outside viewer as “weird simulation stuff” would just be “advanced physics” to us. Odd glitches would get rationalized away, in that manner. (The key being, the simulation is the only thing you experience, so there’s nothing to compare it against). So when you say “this universe is an advanced simulation,” you’re making an empty claim. (If everything I’ve ever experienced isn’t real, then what is the exact definition of “real”). If you had blatantly obvious evidence that we were in a simulation, (such as escaping it), you would still not know that the new thing you are in is not a simulation. Or if it is just a further part of the same simulation. It really comes down to the question of “how do I know what is real?” The answer is that we agree on what is reality, and we’ve decided that reality is the stuff around us. There’s stuff inside reality that we agree is “not real” but that stuff is all still “real” it just isn’t in the same form as your daily life.