Determinism is the family of theories that takes some class of events to be effects of certain causal sequences or chains, more particularly certain sequences of causal circumstances or causally sufficient conditions. One of these theories, universal determinism, associated with much science and philosophy, concerns the class of all events without exception. Another theory concerns physical events. Determinism in a third and important sense is human determinism. It is the theory that our choices and the many other antecedents of our actions, and the actions themselves, are effects of certain causal sequences. Lesser theories, usually associated with Freud and given no philosophical attention to speak of, concern themselves with particular sorts of conscious or otherwise mental causes of choices and actions, notably early sexual desires.

There are various relations between these four determinisms, depending on how they are additionally characterized. The most important relation...