(For previous posts in this series, see here.)
Defining what is meant by free will is not easy. In a loose sense it implies a denial of strict determinism, in which all our actions are completely determined by the past and the immediate environment we find ourselves in. The philosopher John Searle describes free will as the belief “that we could often have done otherwise than we in fact did.” In other words, although I am currently sitting at my desk typing, I think I could just as easily stand up and sing or hop around the room or do any other seemingly spontaneous act. My decision to not do so and continue typing seems like a conscious, freely chosen decision that is not entirely pre-ordained. The catch is that it is hard to reject the alternative hypothesis that all the options I considered were already determined by my history and the external stimuli of the moment, as was also my decision as to which option to choose.
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