The infinite collection of universes thus realizes every possible history, and each such history is realized infinitely often. This entails a peculiar conclusion: the reality that you and I and everyone else experiences is happening out there in other regions—in other universes—over and over again. Modify that reality in any manner that is not strictly forbidden by the laws of physics (you can’t violate the conservation of energy or electric charge, for example) and it is also out there, over and over again.
