This is what is known as Dunbar’s number, and turns out to be surprisingly common in human social organisation. Historically, it was the average size of English villages. It is also the ideal ...

Recently, Dunbar did a study of human interaction on Facebook and found that number to be much lower. We only have 4 real friends, and 14 that care at all. Produced by Joe Avella Follow BI Video ...

Dunbar did a study of human interaction on Facebook and found that number to be much lower. We only have 4 real friends, and 14 that care at all. Follow BI Video: On Twitter More from News In the ...

This number – the maximum social group size for a given species, based on pre-frontal cortex size – became known as the Dunbar Number. Hence the limit on the size of an infantry company ...