I joined the Princeton Philosophy Department in the Fall of 2009, having previously taught at the University of Michigan. My main interests lie in metaphysics and epistemology and include modality, conditionals, essence, causation, explanation, and the metaphysical role of individuals. I also have side interests in probability, decision theory, and in the history of analytic philosophy, in particular in Wittgenstein's thought.

Many of the results of my recent work are presented in my Modality and Explanatory Reasoning (Oxford University Press, 2014). This book deals with topics in the metaphysics of modality, the rules of counterfactual reasoning, the genealogy of modal thought, and the connections of modality to causation and grounding. An electronic version of the book is available via Oxford Scholarship Online. Hardcopies can be ordered on Amazon US, Amazon UK or Oxford UP. For the Kindle edition, click here. An abstract and chapter 1 are available on my research page.