TheAncientGeek comments on Getting Over Dust Theory - Less Wrong
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I haven't read Permutation City, but that's pretty much my view of reality. I don't think there's a meaningful difference between "the real world" and a perfect simulation of it (at least seen "from the inside") - the same way a chess configuration is the same whether it's played on a computer or on a real chessboard today or on a real chessboard a couple centuries ago. Does the rook agonize about whether he's a real rook or a simulation? Does it mean something to him?
What's the meaning of meaningful? Do you mean that you literally cannot understand the opposite of simulationism? Or are using "meaningful" to mean "empirically confirmable"? The empirical indetectability of a simulation follows from simulations premises, right enough....but it cannot be used to argue for them.
I mean, roughly, that not only are the two empircally indistinguishable, but that I don't even see a reason to care about whether I'm "in a simulation" or not, and it's not even clear what would qualify as a simulation...
Don't you mean "have been indistinguishable up to time T"
Simulations support counterfactuals, such as shutdowns. getting out into the real world, etc.
If we're given assurances that things you might care about, such as being abruptly halted, aren't going to happen, then you might have nothing further to care about....but it is difficult to see what such assurances would consist of,