How Many Friends Does One Person Need? by Robin Dunbar is a fascinating examination of human evolution, revealing why we gossip, how many Facebook friends we should have and how our distant past influences our current behaviour.
Robin Dunbar is currently Professor of Evolutionary Anthropology at Oxford and a Fellow of Magdalen College. His principal research interest is the evolution of sociality. He was elected a Fellow of the British Academy in 1998. His books include The Trouble with Science (1995), 'an eloquent riposte to the anti-science lobby' (Sunday Times), and Grooming, Gossip and the Evolution of Language, praised as 'brilliantly original' and 'a delight to read' (Focus). His most recent book, The Human Story, (2004), was described as 'fizzing with recent research and new theories' in the Sunday Times and 'punchy and provocative' by the New Scientist.