Robin Dunbar, currently Director of the Institute of Cognitive and Evolutionary Anthropology of the University of Oxford, is renowned for creating a formula which is now known as 'Dunbar's number' – and that number is 150. This calculates the 'cognitive limit' of the number of people we can hold meaningful friendships with. When it was first formulated it created a fevered debate about the nature of and the differences between, online and real 'friendships'. Robin was elected a Fellow of the British Academy in 1998. His books of popular science include The Trouble with Science, The Human Story (described by the Sunday Times as “fizzing with recent research and new theories”) and How Many Friends Does One Person Need?: Dunbar's Number and Other Evolutionary Quirks.

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…