My name is Rory Harder. I completed my PhD in philosophy earlier this year at the University of Toronto. My research is in the philosophy of language and mind.

At the broadest level, my research addresses philosophical issues concerning joint action: What does it mean to act together, such as in walking or talking with one another, or simply sharing experiences? What role does such engagement play in our lives as rational agents? I am especially concerned with linguistic communication—as one form of our joint action, but with a distinctive character—and in particular the meaning and use of demonstratives: words such as this and that.

Here is my CV.

You can e-mail me at [firstname][lastname]


Here are my papers, in various stages of progress.

  • Joint Attention and Communication, Inquiry: An Interdisciplinary Journal of Philosophy
  • [A paper on the formal semantics of demonstratives and definite descriptions], Revise and Resubmit
  • [A paper on demonstratives and joint attention], Under Review
  • [A paper on the pragmatics of demonstratives], Under Review
  • The Simple Theory of Joint Activity, Manuscript in Progress
  • A Tale of Two Theories of Mind, Manuscript in Progress

Here is my dissertation.


I have taught third-year seminars in the philosophy of language and mind at the University of Toronto and first-year introductions to formal reasoning and decision making at Rutgers University.