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Humans can have more or less than 150 friends

A new paper questions the validity of Dunbar’s number, which places a limit on social interactions.

A pair of Rhesus macaques. Dunbar's number, based on analysis of primate brains and groups, suggests a limit on social connections - but new research disputes it.
A pair of Rhesus macaques. Dunbar's number, based on analysis of primate brains and groups, suggests a limit on social connections - but new research disputes it. Credit: Johan Lind/N
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