Suppose government spending increases, which causes producers to hire more workers. As a result, households have more income to spend, which causes aggregate demand to increase even more, this is known as the

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These tragedies are more likely to occur  when the benefit to the individual for using a bit more of the resource is greater than the associated cost.for example, a company may choose to dump all of its manufacture waste on the public lake (collective resource) because the cost of actually creating waste  management system would be higher compared to simply dumping them into the lake.