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Davies' ideas have been floating around at least since William Gibson coined the term "cyberspace" mostly unchanged since that time. I find the idea that we're living in a virtual reality simulation especially annoying, because it's untestable and by definition, mysticism, not science. There is no feature of the observable universe that forces us to turn to, or even consider, the simulation hypothesis. It's an interesting conjecture, nothing more. And if I'm wrong, I invite Davies to propose an empirical test to prove it.