Abstract

Theories of modality which invoke possible worlds have recently been challenged by accounts that appeal to dispositional properties. A prominent strand of the accounts maintains that there is an intimate link between dispositions and possibility. The link is said to be captured by the proposition that, at first approximation, a state of affairs is possible just in case there is some actual disposition whose manifestation is the state. Focusing on the most detailed exposition and defence of this approach, put forward by Barbara Vetter, I critically examine the adequacy of the view of dispositional properties on which it rests and which seems to be required by any plausible dispositionalist account of possibility. In the course of doing so, I offer arguments in favour of the causal nature of dispositions.