Short Read: You Can Only Maintain So Many Close Friendships

Sheon Han | 9 minutes

The Oxford evolutionary psychologist Robin Dunbar is best known for his namesake “Dunbar’s number,” which he defines as the number of stable relationships people are cognitively able to maintain at once. (The proposed number is 150.) But after spending his decades-long career studying the complexities of friendship, he’s discovered many more numbers that shape our close relationships.