If you wanted to build the most powerful computer you could, you can't do better than including everything in the universe that's potentially available.
Seth LloydThe history of the universe is, in effect, a huge and ongoing quantum computation. The universe is a quantum computer.
Seth LloydI have not proved that the universe is, in fact, a digital computer and that it's capable of performing universal computation, but it's plausible that it is.
Seth Lloyd