 If moral responsibility requires free will, and free will involves access to alternatives in a way that is not compatible with determinism, then it would follow from the truth of determinism that no one is ever morally responsible. The above reasoning, and the skeptical conclusion it reaches, is endorsed by the hard determinist perspective on free will and responsibility, which was defended historically by Spinoza and d’Holbach (among others) and, more recently, by Ted Honderich (2002). But given that determinism may well be false, contemporary skeptics about moral responsibility more often pursue a hard incompatibilist line of argument according to which the kind of free will required for desert-based (as opposed to forward-looking, see  §2.1)  moral responsibility is incompatible with the truth or falsity of determinism (Pereboom 2001, 2014). The skeptical positions discussed below are generally of this sort: the skeptical conclusions they advocate do not depend on the truth of determinism.