Powers, Processes, and Time Giacomo Giannini (Durham University) Penultimate Draft, Forthcoming on Erkenntnis. Abstract. In this paper I argue that even the most radical metaphysics of powers (such as that adopted by Mumford & Anjum, Cartwright, or Groff) are compatible with eternalism. I first offer a taxonomy of powers ontologies, and attempt to characterise the difference between moderate and radical powers ontologies – the latter are characterised by an emphasis on production and dynamicity. I consider an argu- ment by C. Friebe to the effect that the productive character of powers is inconsistent with Eternalism and find it wanting. I then elucidate the notion of dynamicity that radical powers theorists employ by making apparent their link with an ontology of irreducible processes. Finally, I respond to an argument by Donatella Donati to the effect that eternalism entails a reductive account of change which is incon- sistent with process ontologies, and show that the the two are compatible. I conclude that we have no reason to think that radical powers metaphysics (and, a fortiori, every powers ontology) are not com- patible with eternalism. A broadly Neo-Humean conception of the world, paradigmatically embodied by Lewis’ claim that ‘all there is to the world is a vast mosaic of local matters of particular fact, just one little thing and then another’ (Lewis 1986: ix) has been, at least implicitly, the background world-view of most metaphysical theorising in the last decades of the twentieth century. Recently, however, this paradigm is being put ‘under serious pressure within analytic metaphysics’ (Groff & Greco, 2013: 1) by a rival, broadly Neo- Aristotelian picture of reality, spearheaded by the idea that there are real causal powers that establish necessary connections between existents. 1 So far talk of powers has been mostly limited to the closely intertwined discussions about laws of nature, (natural) modality, and causation. However, if powers metaphysics and in general Neo-Aris- See, inter alios, Bird (2007), Ellis (2001), Groff & Greco (2013), Jacobs (2017), Marmodoro (2010), Martin (2008), Molnar 1 (2003), Mumford (2004), Mumford & Anjum (2011), Vetter (2015), Williams (2019). 1