Abstract

Powers theorists frequently assert that their neo-Aristotelian frameworks are dynamic, and that this gives them a theoretical advantage over their neo-Humean rivals. But recently it’s been claimed that activity can also be used to divide powers theories themselves. Dynamism is here understood primarily in terms of activity: a metaphysic counts as dynamic according to the place activity is given within the system. Activists treat activity as fundamental or irreducible, and claim to have the philosophical high ground over those ‘passivist’ powers theories wherein activity is reducible or nonfundamental. In this paper I take a closer look at dynamism within powers theories, with a particular focus on how the activism/passivism distinction might be made. I then consider the broader ontological impact that the various commitments to activity might carry, along with an assessment as to who appears to be better off. Despite what’s been claimed, I find no reason to think that activists have any serious theoretical advantage in this debate. In fact, as things presently stand, I am not convinced that powers and activity make for a good pairing at all, as there’s presently no good model for powers like this.