[Piers]

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Your sense of "self". What religious people call the soul.

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I think it’s perfectly possible for someone else to really believe (s)he is you.

Take someone and wipe their mind, then build up your brain structure within there’s. In theory you could create someone who thought (s)he was you, and was indistinguishable from you to most if not all observers.

Would that person be you? Would it make a difference if you were alive or dead? Would it make a difference if all evidence of the replacement were removed? Is Star Trek like teleportation a real possibility? Can you transplant your mind to a computer?

It all depends on how ‘you’ is defined. Just using an even more ambiguous concept like ‘soul’ for the definition is just an unhelpful cop out.