Abstract

Late twentieth-century physicalism—here understood, broadly, as a comprehensive view about the nature of contingent reality, rather than, narrowly, as a view about the relation of the mental to the physical—is widely regarded as the descendant of the materialist hypotheses familiar from the history of philosophy both ancient and modern. This chapter contends that contemporary physicalism differs significantly from historical hypotheses of materialism, significantly enough that the prospects for physicalism cannot be inferred from those for materialism. The chapter brings out these differences by identifying the two main challenges faced by philosophers who want to revive the materialist hypotheses of earlier centuries, and then indicating the author’s possibly idiosyncratic view of how these challenges are best overcome. The first challenge is to formulate physicalism adequately, so that it is interesting but neither obviously true nor obviously false; the second challenge is to specify what would count as empirical evidence for an adequately-formulated hypothesis of physicalism. The chapter’s survey of responses to these two challenges constitutes an opinionated history of central aspects of the past fifty (or so) years of philosophical reflection on physicalism.