The basic philosophical positions on the problem of free will can be divided in accordance with the answers they provide to two questions:
1. Is determinism true?
2. Does free will exist?
Determinism is roughly defined as the view that all current and future events are causally necessitated by past events combined with the laws of nature. Neither determinism nor its opposite, indeterminism, are positions in the debate about free will.
Compatibilism (also called soft determinism) is the view that the assumption of free will and the existence of a concept of determinism are compatible with each other; this is opposed to Incompatibilism which is the view that there is no way to reconcile a belief in a deterministic universe with a belief in a concept of free will beyond that of a perceived existence. Hard determinism is the version of incompatibilism that accepts the assumption of determinism and rejects the idea that humans have any free will.[3