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Hurricane Sandy, Economics And The Broken Window Fallacy

Hurricane Sandy brought commerce to a halt across the state today. Some economists will say hurricanes like Sandy produce enough economic activity to create a net gain. But they may not be taking into consideration what is known as The Broken Window Fallacy.

Dennis Delay, an economist at the Center for Public Policy Studies, says that after the storm, it’s easy for economists to measure the positive economic effects of a hurricane. Whatever sales were lost because of store closures will probably be made up in extra shopping later in the week. And fallen trees, flood damage, and broken glass all create opportunities for people like arborists, construction workers, and landscapers. But, he says, property damage is harder to quantify.

“If you were to break someone’s window, then they have to go out spend more money to buy a new window, and that shows more economic activity. What they’re not considering is the damage they did when they break the window in the first place.”

Because of this so-called “broken window fallacy,” Delay says, economists frequently say hurricanes like Sandy are a net gain. More likely, it’s all a wash. 

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