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2min chapter
AMA | July 2023
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
The Importance of Separation in a Multiple Universe
If you thought there was only one universe, then personal identity would be a fairly simple thing. When you now have many worlds and each individual person becomes multiple copies, that's no longer true. So therefore, the fact that even in the original single universe way of talking, you really should distinguish between yourself at 5pm and yourself at 6pm as two different people with connections between them. That goes from being optional but inconvenient in the single world case to being necessary in the multiple world case.
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