Some people endorse a view called incompatibilism, which states that free will is incompatible with determinism. No free action could possibly be determined, they think. More informatively, incompatibilists think it is impossible that someone’s freely acting be causally guaranteed to happen by things that occur before she freely acts. Some people hold a view called libertarianism, which states both that incompatibilism is true and that someone actually performs a free action. Other people reject incompatibilism. They hold to compatibilism, which is (...) the view that it is possible that previous happenings in the world could absolutely causally guarantee—that is, could cause in a deterministic way—that someone freely acts. In this chapter, I argue that libertarianism is, for the time being at least, the most sensible view. (shrink)