naturalism, and dualism are reconsidered. The special issue is neither the first nor the last word on the topic of the character physicalism. Nonetheless, it offers both an updated appraisal of our current understanding of physicalism and concrete proposals for how to move forward.
Physicalism: Ontology and MetaphysicsAt the heart of physicalism lies an ontological (or if you prefer, ontic) thesis.1 To espouse physicalism is to make certain commitments about what types of things (objects, properties, events, states of affairs) exist in our world (Quine 1948; cf. Hellman and Thompson 1977, p. 310).2 IfNot many issues in philosophy can be said to match, let alone rival, physicalism's importance, persistent influence, and divisiveness. To a first approximation, physicalism holds that everything that exists in our world is physical. An acceptance of physicalism commits thus one to a monistic worldview. Despite how variegated existing entities or properties might appear to be, everything that exists in our world is, according to physicalism, the same: namely, physical. Indeed, it is widely thought that physicalism demands not only that the non-physical (the chemical, the biological, the economic, the social, the mental, etc.) metaphysically depends on the physical but also that the non-physical is nothing over and above the physical. But what type of metaphysical dependence vindicates physicalism?The aim of this editorial introduction is twofold. First, Sects. 1-8 offer a critical introduction to the metaphysical character of physicalism. In those sections, I present and evaluate different ways in which proponents of physicalism have made explicit the metaphysical dependence that is said to hold between the non-physical and the physical. Some of these accounts are found to be problematic; others are shown to be somewhat more promising. In the end, some important lessons are drawn and different options for physicalists are presented. Second, in Sect. 9, the six papers that comprise the special issue are introduced and summarized. Each contribution to the special is, in different ways, concerned with explicating the character of physicalism. New ways of formulating physicalism are assessed; old ways are defended; and the distinctions between physicalism, Both terms are acceptable and the choice between them is ultimately idiosyncratic. "Physicalism" has the benefit of rendering the metaphysical view under discussion both more general (the extension of "physical," I presume, is larger than that of "material") and closer to present-day physics. "Materialism" has the benefit of showing how the metaphysical view under discussion has a historical lineage and as such relates to the views of Hobbes, Lucretius, and Democritus. 2 It is often stated that physicalism is both a contingent thesis and one that has strong modal commitments (Lewis 1983;Jackson 1998; Stoljar 2015). Its contingency is manifested in the claim that physicalism is a thesis about our world and even if it is true, it did not have to be so. Furthermore, the ...