The counter is that if it is possible to simulate the universe, then all of our experiences drop out of the structure of the simulation, independent of whether any computer is executing the simulation.

In the same way that 42 remains 42 even after the calculator is switched off, your experience of reality inside the "simulation" remains even after the simulator is switched off.

All the simulator does is expose the contents of the simulation to one who is outside it. It does nothing for those of us who are inside it, our experiences were there all along.

All possible configurations of the game of life "exist" inside the infinite structure of the game of life, independently of whether you evaluate them so that you can see how they proceed.

All possible chess games "exist" inside the infinite structure of chess, independently of whether you play them out.

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