Harvey Lederman


I am an assistant professor in the department of philosophy at Princeton. Before Princeton, I taught at the University of Pittsburgh, and before that I was a postdoc at NYU. You can view my CV here.

My main completed work is on the notion of common knowledge. Some people commonly know a proposition just in case they all know it, they all know that they all know it, and so on. Common knowledge has been widely used in economics, linguistics and philosophy. I have argued that common knowledge is not as important as many people have thought. The main paper to come out of this project is Uncommon Knowledge, in which I present an argument that people never have common knowledge at all. A second paper examines what if anything the coordinated attack scenario and the electronic mail game show about the role of common knowledge in the theory of rationality in strategic situations. I have recently written a handbook article about common knowledge.

I also have a longstanding interest in the history of philosophy. I have published on Aristotle's theory of time, and I am currently working on a paper about the Ming dynasty philosopher Wang Yangming.

Work in Progress:


Conference Proceedings:

Handbook Article:


Older Papers:

Thanks to Peter Fritz for sharing his style sheet.