He then studied at UCLA, earning an M.A. in 1986 and a PhD in 1990; his dissertation was entitled Knowledge, Epistemic Possibility, and Skepticism, under Rogers Albritton.
He studied at UCLA, earning an M.A. in 1986 and a PhD in 1990; his research focused on Knowledge, Epistemic Possibility, and Skepticism, under the guidance of Rogers Albritton.