https://phys.org/news/2021-05-friends-deconstructs-dunbar.html https://phys.org/news/2021-05-friends-deconstructs-dunbar.ht... > the main problem was that the

https://phys.org/news/2021-05-friends-deconstructs-dunbar.html https://phys.org/news/2021-05-friends-deconstructs-dunbar.ht... > the main problem was that the 95% confidence intervals for these estimates were between 2 and 520 people.