terça-feira, 4 de junho de 2013

Ciclos de negócios

"After more than a quarter-century as a professional economist, I have a confession to make: There is a lot I don't know about the economy. Indeed, the area of economics where I have devoted most of my energy and attention -- the ups and downs of the business cycle -- is where I find myself most often confronting important questions without obvious answers..."
Greg Mankiw
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