Something that surprised me from the interview with Agustin Rayo was the point he made about how a lack of determinism imposed by quantum randomness or some other force doesn't necessarily equate to free will, as being governed by randomness doesn't incorporate any more individual agency than being governed by strict laws. I had a similar thought while watching the interview with Dan Gilbert and his discussion of Laplace's demon, so I was surprised to see Professor Rayo bring up the same point and discuss it. He went on to make the distinction that being able to predict someone's behavior doesn't mean they aren't free, it just means that you're good at predicting how they choose to exercise their freedom. This concept left me with additional questions, which I'll pose in a separate post.
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I absolutely agree that "determinism" and "free will" and not opposites, as they are often portrayed. A coin is unpredictable but certainly does not have free will - who's to say humans aren't random but non-willed phenomena like that?
However, points about free will also beg the question - exactly what do we define "free will" as? If one's discretion is determined entirely by the environment, but a person's discretion determines their actions, is that free will? What if one's discretion is determined by other parts of the brain that are just acting in accordance with physical laws? The question is just as much a scientific one as a philosophical one.