 His 2012 book, Philosophy without Intuitions, argues that intuition plays a minor role - or no role at all - in most modern philosophy, and the fear that intuition is widespread has been damaging.His claim that the role of intuitions is overstated is controversial, and has been hotly debated.Along with Josh Dever, Cappelen has argued that the notion of perspective is unimportant for the philosophy of language, thought, and action.