Robin Dunbar explains why we can only ever have 150 friends at most

Renowned evolutionary anthropologist Professor Robin Dunbar visits the RSA to explain how the very distant past underpins all of our current behaviours, and how we can best utilise that knowledge .

9319_How_Many_FriendsThe director of the Institute of Cognitive and Evolutionary Anthropology at Oxford University is also the author of How Many Friends Does One Person Need? (Faber)