Against this backdrop, Garriga and Vilenkin offer a curious sort of optimism. They note that because every history plays out across the infinite collection of universes, some will necessarily enjoy rare but fortuitous drops in entropy that keep particular stars and planets intact, or yield new environments containing sources of high-quality energy, or any of a wide array of unlikely developments that will allow life and thought to persist far longer than otherwise expected. Indeed, as Garriga and Vilenkin argue, if you select any finite duration, however long, there will be universes among the
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