I’ll argue in chapter 4 that this is incorrect. In principle, we can construct perfect simulated worlds ourselves, with beings inside them. There will be no way for those beings ever to know that they’re in a simulation. The simulation hypothesis is demonstrably true of those beings. It follows that the hypothesis is meaningful. It may also be true of us, or it may not. Perhaps we will never know the answer to the question, but the hypothesis is either true or false all the same.