Helen Beebee

John Martin Fischer argues that a version of the Consequence Argument that invokes a principle he calls the ‘Principle of the Fixity of the Past and Laws’ is immune to the broadly Lewisian response that the compatibilist can make to the ‘conditional’ version of the argument. In his contribution to this volume, he argues—in part by appealing to backtracking counterfactuals—that denying PFPL leads to trouble, specifically, for the fixed-laws compatibilist. I argue on behalf of the fixed-laws compatibilist that his argument fails: true backtrackers of the kind Fischer’s argument needs are harder to come by than Fischer supposes, and in any case their truth is not something that can be known, prior to decision, by the deliberating agent.

Modality is standardly thought to come in two varieties: de dicto and de re. De re modality concerns the attribution of modal features to things or individuals, and enshrines a commitment to Aristotelian essentialism. This chapter considers how David Lewis's conception of de re modality fits into his overall metaphysics. The hypothesis is that the driving force behind his metaphysics in general, and his adherence to counterpart theory in particular, is the distinctly Humean thought that necessary connections between distinct existences are literally unintelligible. Lewis's appeal to counterpart theory in his account of truthmakers is explicitly aimed at delivering a truthmaker principle that eschews necessary connections. Lewis's attitude towards several well‐rehearsed debates in contemporary ontology and the reasons underlying that attitude closely mirror Hume's incendiary verdict on "divinity and school metaphysics." Finally, de re modality is connected with his adherence to the doctrine of "Humean supervenience".