Faces, Feelings and Lies
How can we know what a person is feeling by looking at their face, and in particular can we know if they are lying? There is clearly both a psychological side to this and an epistemological side. Our guest is famous for his work on the psychological side, with a positive result: we can know what a person is feeling, and whether they are lying; at least the information is often there in the face. But it’s not always so easy.
