A book by Robin Dunbar that explores the social brain hypothesis, proposing that human language evolved as a more efficient method to maintain social bonds within larger groups, effectively replacing physical grooming. The book also introduces 'Dunbar's number,' which is the theoretical cognitive limit to the number of stable social relationships an individual can maintain.
social brain hypothesis, Robin Dunar, you know, all of this stuff, fantastic.
""The speaker mentions Robin Dunbar in the context of the 'social brain hypothesis' and human social nature, which are central themes extensively discussed in this particular book by Dunbar."