Win said:
II
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I don't reconcile it. This is the paradox and why materialism is false. If they were both me literally, then in my thought experiment I outlined before, it would be irrational for me not to agree to be duplicated since the prospect of me receiving £10,000,000 is just as sure as if I underwent the same experiences (watching Groundhog's Day), but without being duplicated.
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For the materialist, there is no paradox. Both satisfy the criteria, both are Ian.
There is no paradox for the materialist, for the simple reason that he's not considering the situation from the first person perspective.
Only because you insist that one of the two post dup Ians is "really" you, do you perceive a paradox. Neither, or both, have the right to the title "really you."
Do you understand this?
Of course. I always have done right from the very beginning. Now do you think it would be irrational for me to decline being duplicated in my thought experiment? I would say that materialism and epiphenomenalism would require it to be irrational (albeit perhaps understandable from the psychological perspective).
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My self together with other influences (ie state of brain and environment) determines what I do. I have the capacity to choose whatever I want to do and people will judge what sort of person I am by my actions. But my essence or self is not to be equated with my very actions. I do the actions that I do because of my self, but I could in principle act contrary to my perceived character. An actor doesn't suddenly literal get his self changed whilst s/he is acting.
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The bolded part puts paid to the idea of "libertarian free will." If you do what you do because of your self, your self determines what you do. You're actions are just as determined by your identity as they are by the laws of physics. You're just as much a slave.
As I have said, ultimately my self chooses what to do. If by determines you're thinking of the word as being synonymous with chooses, then that is fine. Ultimately I choose to do what I do because of everything that I am. Does this mean I couldn't possible have chosen otherwise? No, it just means that I make my particular choices because of my disposition at the time. To say that I do not have libertarian free will because of my own dispositions and wants is to misunderstand what libertarian free will means (or at least my understanding of it). I have free will meaning that the choice is ultimately entirely up to me.
The only kind of free will that exists is the ability to make a choice, unconstrained, in the moment. We all have that, whether materialism is true or not.
But why believe that our choices necessarily must unfold according to some specific algorithm? My wants and desires dictate my behaviour, and we have no reason to suppose that such consequent behaviour
will just happen to coincide with some specific algorithm. I do not act according to some predefined rule, rather my actions are finally determined in the moment.
To clear up any possible misunderstanding. I do not deny that a being with an infinite understanding of my very essence could not unfailingly predict how I will act in a given context. But this is not determinism and as far as I am concerned, doesn't contradict libertarian free will.
It seems like other people you are making determinism so broad that libertarian free will cannot exist
by definition. But saying that determinism is true is then vacuous. It doesn't actually
say anything.