Dunbar’s number is a suggested cognitive limit to the number of people with whom one can maintain stable social relationships—relationships in which an individual knows who each person is and how each person relates to every other person. By using the average human brain size and extrapolating from the results of primates, British anthropologist Robin Dunbar proposed that humans can comfortably maintain only 150 stable relationships. Dunbar explained it informally as “the number of people you would not feel embarrassed about joining uninvited for a drink if you happened to bump into them in a bar.”
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How Smart And Successful People Think And Acts
