How do I know I'm not dreaming? This sort of question has puzzled philosophers for thousands of years. Eric Schwitzgebel discusses scepticism and its history with Nigel Warburton in this episode of the Philosophy Bites podcast.

This episode of Philosophy Bites was sponsored by the Examining Ethics podcast from the Janet Prindle Institute for Ethics at DePauw University. You can subscribe to Examining Ethics on iTunes or listen to episodes at ExaminingEthics.Org