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First, the idea of the multiverse is essentially the fantasy of preserving perfect information. One of the hard things to deal with in life is the fact that you destroy potential information whenever you make a decision. You could even say that’s essentially what regret is: a profound problem of incomplete information. If you select one thing on a diner’s menu, you can’t know what it would have been like to taste other things on it, right then, right there. When you marry one person, you give up the possibility of knowing what it would have been like to have married any number of others. But if the multiverse exists, you can at least imagine there’s another version of you who’s eating that other thing you thought about ordering, or who’s married to that other man you only went on two dates with. Even if you’ll never see all the information for yourself, at least you’ll be able to tell yourself that it’s
