Human beings ought to live in groups of around 150 people, judging from the logarithm of our brain size; and sure enough, studies of hunter-gatherer groups, military units, and city dwellers’ address books suggest that 100 to 150 is the “natural” group size within which people can know just about everyone directly, by name and face, and know how each person is related to everybody else.Source: The Happiness Hypothesis by Jonathan Haidt
Thursday, January 2, 2020
Natural group size
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