As we could have same personality without literally same brain, if personality is the key to personal identity, that would still be me.

我们可以拥有同样的人格,不需要同样的大脑,如果人格是人格同一性的关键的话，那个人还是我。

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It might be that I get what matters to me even if I have, as long as I have,similar personality,even if I don't have survival.

即便只要我拥有相似的人格，不生存下去也无关紧要。

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According to the personality view, what makes somebody in the future the same person as somebody in the past is if it's part of the same ongoing personality.

根据人格理论，将来之某人与过去之某人为同一人,条件是拥有相同持续人格中的部分。

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So,if you're not willing to accept the no branching rule, if it strikes you as a bizarre thing to throw in to personal identity, maybe you need to reject the personality theory.

所以若你不愿意接受无分支规定，如果你觉得这个人认同感里很奇怪，也许你就需要否决人格理论了。

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