David Christensen is a contemporary American epistemologist best known for his work on peer disagreement, self-locating belief, and epistemic rationality. He is a professor at Brown University and has been a central figure in debates over conciliationism — the view that epistemic peers who disagree should move toward each other's positions. His work engages both formal and informal approaches to rational belief revision.
Developed influential arguments for conciliationism in peer disagreement
Contributed foundational work on the Reflection Principle and its limits
Advanced the epistemology of self-locating belief and de se content
Authored the Stanford Encyclopedia of Philosophy entry on disagreement
Explored epistemic akrasia and the rationality of higher-order evidence