Game theory shows how tragedies of the commons might be averted

Lake Lanier in Georgia is the primary water reservoir serving suburban and metropolitan Atlanta. When the lake's water level drops below a certain point, calls go out for water conservation and news reports show images of the red mud shoreline. In some affected counties, water restrictions are imposed. The combination of usage restrictions and changes in precipitation eventually averts the crisis. But, when the crisis ends, water usage rebounds - until the next shortage.

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