this post was submitted on 22 Dec 2023
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But at that point, isn't that no different than just saying the universe isn't a simulation? If there is a base universe than that is the "actual" universe, and who cares about all the simulations beyond what we would care about a simulation we created? For this to be the case, I feel like there would need to be some additional features or complexities about this base universe that can't be simulated and thus that allows those in it to prove that they are not a simulation. The issue the simulation universes have is that if they could create a simulation of their own universe they are immediately confronted with the conundrum that they themselves are probably not the first one to do this. But this theoretical base universe would have some characteristic about it that precluded them from this issue. Or maybe they don't, maybe they think they're simulation too but they're not and have no way to prove otherwise, they just happen to be the base. However, if that is the case, then you can make that same argument for this universe can't you?
I don't personally suspect that anyone could truly create a simulation of their own universe at all. You could absolutely simulate a universe, but simulating your own universe (presumably your own universe at a point in the past since that's what context the simulation argument generally gets made in) would have to have some kind of deviation from the real universe, be it that not all of the universe is simulated, or it's only simulated to a certain level of detail or "resolution" and any physics on a smaller scale is simplified, or time runs slower or something. Because if you can simulate a perfect copy of your universe, or a universe of equivalent complexity and speed, then you can build a computer in that simulation equivalent to the one running it, and since that simulated computer doesn't use all the resources of it's simulated universe presumably, you can build several of them and get more processing power than you started with, which makes no sense. And if every "layer" of simulation inheritly has dramatically less possible complexity to it than the layer above, you should eventually (and I suspect rather rapidly) reach a level where further nested simulations are not possible