Phil Brien, shares a video slide and gives a helpful overview to Dunbar’s Oxford video, stating, “Robin Dunbar is excellent in the video – makes me wish I’d had a University education. He uses simple slides to explain his theory, maintains that even with lots of maintenance those weak ties will drop away to his 150 – and is humble enough to tell us that Aristotle and Plato got these numbers right well before he did.
He continues to justify his 150 in simple form. He shows a bar chart analysis of the average number of people we send Christmas Cards to, cites military units and tells us that even Facebook recently analysed their network and the average friends per user was 120-130 (very near).
I like his style. Explaining a complex, well research subject in a fun way. He’s happy to intersperse his serious research with a bit of fun. He analysed that boys spend on average 7.3 seconds on a phone call, whereas girls spend massive amounts of time on the phone!! I like amusing academics….”
Read more at http://www.philobrien.com