All You Zombies Summary

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I think Lewis’ beliefs of time travel compliment Heinlein’s text well (and I guess vice versa as well. In his writing, Lewis explains that, in time travel, it is necessary for the time traveler to maintain some kind of personal identity, where they have to be the same person as the one that departed. Lewis also argues there has to be some kind of casual continuity, where the causation goes from earlier to later stages in the order of personal time. I think this idea definitely is true in All You Zombies. The time traveler has all the same memories and thoughts (same person), and there is some casual continuity as well. Lewis also talks about the idea of casual reversals and loops. Lewis explains casual loops in his essay stating that “Each

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