MULTIPLE DAVID GELERTNERS.

MULTIPLE DAVID GELERTNERS. One of the consequences of infinite universes is the notion that there may be a number of duplicates of each person. David Gelertner says to Brian Greene: “You write that, if parallel universes really exist, “‘there are many perfect copies of you out there in the cosmos, feeling exactly the same way. And there’s no way to say which is really you.'” Greene replies that each duplicate of David Gelertner would think that he is David Gelertner and would be fully justified in thinking so.