Personal Identity III

Personal Identity III - Personal Identity Five Views Memory...

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Personal Identity
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Five Views Memory Pure Psychology Impure Psychology Parfit Physical
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Memory A person P existing at a time t1 is identical to a thing Q existing at a different time t2 if and only if either P can remember the experiences of Q or Q can remember the experiences of P .
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Pure Psychology A person P is identical to a thing Q if and only if there are times t and t’ such that Q is at t’ such that Q at t’ is psychologically connected with P at t , i.e. t’ is later than t , and Q believes at t’ a good bit of what P believed at t , Q wants at t’ a good bit of what P wanted at t , Q seems to remember at t’ a good bit of what P experienced at t , and so on.
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Impure Psychology A person P is identical to a thing Q if and only if there are times t and t’ such that Q is at t’ such that Q at t’ is psychologically connected with P at t , and P and Q share a brain.
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Parfit 1. If there will be a single future person who will have enough of my brain to be psychologically continuous with me, that person will be me. 2. If some future person will neither be psychologically continuous with me, nor have enough of my brain, that person will not be me.
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Parfit’s View Note: Parfit’s view does not deliver a verdict about personal identity in every case, even if we know all the facts about the identity of brains and psychological continuity.
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Parfit’s View Note: Parfit’s view does not deliver a verdict about personal identity in every case, even if we know all the facts about the identity of brains and psychological continuity. What kinds of cases will not receive a verdict from these principles?
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Physical A person P is identical to Q if and only if P and Q have the same body.
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Intuitive Support for the Physical View Physical: It feels natural to say that you are a person, and that your finger is literally part of you, i.e. that you are your body, rather than simply that you inhabit your body.
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Intuitive Support for The Physical View Physical: It feels natural to say that you are a person, and that your finger is literally part of you, i.e. that you are your body, rather than simply that you inhabit your body. That’s an ontological thesis: people are their bodies. But the Physical Criterion fits very naturally with it.
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Intuitive Support for the Physical View Physical: It feels natural to say that you are a person, and that your finger is literally part of you, i.e. that you are your body, rather than simply that you inhabit your body. That’s an ontological thesis: people are their bodies. But the Physical
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Personal Identity III - Personal Identity Five Views Memory...

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