There is one that is close to accurate posted somewhere, the scrolls maybe, but I'm pretty sure this one is correct.
(Food Surplus * 4) / (Population + 1) + 2 = Family size
Food Surplus is the total of all unconsumed food in all of a civilization’s cities.
Population is the total of all city sizes.
(Food Surplus * 4) / (Population + 1) + 2 = Family size
Food Surplus is the total of all unconsumed food in all of a civilization’s cities.
Population is the total of all city sizes.
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