[Revised entry by Kadri Vihvelin on August 22, 2022. Changes to: Main text, Bibliography] We believe that we have free will and this belief is so firmly entrenched in our daily lives that it is almost impossible to take seriously the thought that it might be mistaken. We deliberate and make choices, for instance, and in so doing we assume that there is more than one choice we can make, more than one action we are able to perform. When we look back and regret a foolish choice, or blame ourselves for not doing something we should have done, we assume that we could have chosen and done otherwise. When we look forward and make...