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Originally Posted by Interesting Ian You've defined determinism as not random. So obviously free will is compatible with determinism. It's not a kind of free will which is compatible, but free will in the sense that everyone means it. Unless you wish to backtrack on your definition of determinism?
BTW the mechanical philosophy has been shown to be false by QM. |
The cornerstone of incompatibilism is the claim that if all human behaviour is completely determined by events that precede it then all human behaviour is
inevitable.
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Libertarians have varieties of free-will that they want. One libertarian view wants a free-will that involves the notion of 'agent causation'. Agent causation is the idea that agents cause events
directly, not in virtue of being in any particular state. You, not your desire for beer and your belief that there is beer in the fridge, are the ultimate cause of the fridge being opened. It's an appeal to a supernatural 'unmoved mover'.
Another variety of libertarianism wants a free-will that involves episodes of decision-making that are indeterministic by previous states of mind-brain. To them this doesn't involve anything 'spooky'. According to quantum physics, at the scale of subatomic particles, natural processes are irreducibly indeterministic: prior states do not
determine later states; rather, they merely make some later states more
probable than others. On an influential interpretation of quantum physics, luck or chance are built into the very fabric of the universe. They argue that the kind of free-will that grounds judgements of moral responsibility can only be explained in terms of the amplification of indeterministic quantum effects to macroscopic scales in the mind-brain, during decision making. Otherwise, the 'buck cannot stop' with the agent, because any decision can always be blamed on a chain of causes, over which the agent has no control, that determines the discision.
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