Abstract

This chapter considers the view that a central concern of metaphysics is what is possible. That is, the idea is that, unlike science, metaphysics studies not only what is actual, but the ways that reality could be. This view, if right, provides metaphysics with a distinct subject matter from that of science, and, depending on what modal epistemology we adopt, a distinct methodology too. In this chapter, I first provide an overview of the view, before highlighting some of the most prominent objections, and possible routes of response.