On friendship and why it matters
Why do we spend so much time with friends?
How many friends (on average) are in the inner and outer circle?
The numbers tell a consistent story - 5, 15, 50, 150.
Why brain size (cortex) correlates with the number of friends?
The difference between introverts and extraverts - it’s numerical.
The story according to Robin Dunbar, as see through the prism of science and evolution.
