> His basic argument is that if there is an original universe with humans, they might like to simulate their ancestors. And they are likely to run many such sim

> His basic argument is that if there is an original universe with humans, they might like to simulate their ancestors. And they are likely to run many such simulations, in at least some of which, humans survive. Those survivors, in turn, are also likely to run many such simulations, etc. on down the line. I read somewhere that the smallest computer to simulate the universe necessarily has the size of the universe. This would that either the real universe contains much more information (likely more than a few orders of magnitude more so that a trivial part of that Ur-universe can be allocated to simulate our universe), or recursion is not possible.