Thursday, October 15, 2009

The Rule of 150

Robin Dunbar, a British anthropologist has concluded the number 150 represents the maximum number of individuals with whom we can have  a genuinely social relationship, the kind of relationship that goes with knowing who they are and how they relate to us. The military uses the approximate number to size various units. It is possible to run an army with larger groups, it just takes  complicated hierarchies and rules and regulations and formal measures to try to command loyalty and cohesion. Below 150 these same goals can be met informally without the hiearchies.
 

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