To take this a step farther; while this doesn’t prove we’re not in a simulation, I think if you accept that our universe can’t be simulated from a universe that looks like ours, it destroys the whole anthro/ probability argument in favor of simulations, because that argument seems to rely on the claim that we will eventually create a singularity which will simulate a lot of universes like ours. If that’s not possible, then the main positive argument for the simulation hypothesis gets a lot weaker, I think.
Maybe there’s a higher level universe with more permissive computational constraints, maybe not, but either way I’m not sure I see how you can make a probability argument for or against it.
I’d say it proves that we are not living in a simulation that
a) runs in a universe that has the same computational constraints as ours and b) simulates quantum effects faithfully at macroscopic levels
To take this a step farther; while this doesn’t prove we’re not in a simulation, I think if you accept that our universe can’t be simulated from a universe that looks like ours, it destroys the whole anthro/ probability argument in favor of simulations, because that argument seems to rely on the claim that we will eventually create a singularity which will simulate a lot of universes like ours. If that’s not possible, then the main positive argument for the simulation hypothesis gets a lot weaker, I think.
Maybe there’s a higher level universe with more permissive computational constraints, maybe not, but either way I’m not sure I see how you can make a probability argument for or against it.