Are humans limited to 150 friends?

For most of human history, our ancestors were content to live in compact, largely self-sufficient communities. Living and working alongside strangers, as is now common in cities and towns across the planet, would have been unheard of; traditionally, everyone would get to know their neighbors and the role they played in their close-knit society.

And, according to a theory proposed by Robin Dunbar (opens in a new tab)anthropologist and evolutionary psychologist at the University of Oxford in 1993, there is a 150 person limit to the number of individuals with whom we can maintain meaningful social relationships, known as the Dunbar number.

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