One theory as to why societies collapse is that when complexity increases and returns diminish, citizens abandon the system.

The Morning News https://ift.tt/3mRE7Se

For nearly as long as human beings have gathered in sufficient numbers to form cities and states—about 6,000 years, a flash in the 300,000-odd-year history of the species—we have been coming up with theories to explain the downfall of those polities.

↩︎ The New York Times

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