Off The Data Provided

Dunbar’s Number: Why 150 People Fit In Our Social Brain

41:09

On this episode, Dr. Shepard explores Dunbar’s Number, the idea that humans can meaningfully maintain about 150 social relationships. Drawing from Robin Dunbar’s book "How Many Friends Does One Person Need?," Dr. Shepard explains the social intelligence hypothesis that links neocortex size to social-group limits, breaks down the layered structure of relationships (from 3–5 closest friends to…