Abstract

Positions taken in the current debate over free will can be seen as responses to the following conditional: If every action is caused solely by another event and a cause necessitates its effect, then there is no action to which there is an alternative. The Libertarian, who believes that alternatives are a requirement of free will, responds by denying the right conjunct of C’s antecedent, maintaining that some actions are caused, either mediately or immediately, by events whose effects could be different, even if they were to recur under identical circumstances. We have here a denial of Laplacian Determinism (LD), according to which the condition of the world at any instant makes only one state possible at any other instant.¹ One prominent defender of this view, Robert Kane, holds that unless an agent’s neural mechanisms operated indeterministicly in forming her character she is not responsible for its manifestations.² This requirement is entailed by the principle of “ultimate responsibility” (UR) according to which an act is freely willed only if (a) its agent is personally responsible for its performance in the sense of having caused it to occur by voluntarily doing something that was avoidable and (b)