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 pursued studies at UCLA, obtaining an M.A. in 1986 and a PhD in 1990; his dissertation was titled Knowledge, Epistemic Possibility, and Skepticism, under Rogers Albritton.