My primary research interests include the metaphysics of ordinary objects, mereology, mental fictionalism, and material plenitude.

I am currently working on a monograph (under contract) with Cambridge University Press as part of their Elements series called Parts and Wholes: Spatial to Modal. It is a brief survey of various views of composition and mereology as a lead up to – and defense of – a theory of modal parts of ordinary objects.

I recently gave a paper “Deflating Mental Fictionalism” in Budapest, Hungary for a conference on Mental Fictionalism. That paper, along with an updated draft of my  unpublished manuscript “Mental Fictionalism” (2007) are planned for publication in a volume on Mental Fictionalism (Routledge).

Some of my recent publications include: “Counterexamples and Common Sense: When (not) to Tollens a Ponens” in Analysis (2020), “The Lump Sum: a Theory of Modal Parts” Philosophical Papers (2019), and “The Polysemy of ‘Part'” Synthese (2019).  In the spring 2020, I had planned to present “Modal Parts and Plenitude” at a workshop on material plenitude at the University of Texas at Austin. This intended talk is related to some other works in progress that I hope to present live and in the real world, as soon as (if) things get back to normal-ish.



  1. Counterexamples and Commonsense: When (Not) to Tollens a Ponens Analysis 80(3): 544-558 (2020)
  2. The Polysemy of ‘part‘” Synthese – Special Issue: Mereology and Identity (2019).
  3. The Lump Sum: A Theory of Modal PartsPhilosophical Papers (2019).
  4. The Haecceitic Euthyphro problem” co-authored with Jason Bowers, in Analysis 78(1): 13-22 (2018).
  5. Saving Mental Fictionalism from Cognitive Collapse” in Res Philosophica 93(2): 405-424 (2016)
  6. Rearming the Slingshot?Acta Analytica 30(3): 283-292 (2015).
  7. Composition as Identity, Mereological Essentialism, and Modal Parts” in Composition as Identity, eds. Donald Baxter and Aaron Cotnoir, OUP (2014).
  8. The Argument from Vagueness from Modal Parts” in dialectica vol. 68 (3): 355-373 (2014).
  9. Counterparts and Compositional Nihilism: A Reply to A. J. Cotnoir” in Thought: A Journal of Philosophy vol. 2 (3): 242-247 (2013).
  10. Composition as Identity: Part 1” in Philosophy Compass vol. 6(11): 804-816 (2011).
  11. Composition as Identity: Part 2 ” in Philosophy Compass vol. 6(11): 817-827 (2011)


Forthcoming/Under Contract/In Various Stages of Progress:

Parts and Wholes: Spatial to Modal – manuscript in progress – under contract (Cambridge University Press)

“Deflating Mental Fictionalism?” – in progress – forthcoming volume Mental Fictionalism (Routledge)

Mental Fictionalism” (draft) – working on an update for a forthcoming volume Mental Fictionalism (Routledge)

“Modal Parts and Material Plenitude” – in progress

“Immortality and Endless Possibilities: Being All that You Can Be” – in progress

Modal Parts and Ontological Disagreement about Ordinary Objects (draft) -in progress/possibly abandoned