miércoles, enero 19, 2011

Aggregate Demand and Aggregate Supply/ Paul Krugman

Just a brief note: one thing that keeps appearing in comments is the notion that because we had a bubble, in which some people were borrowing too much, the economic growth of 2000-2007 wasn’t “real” — that it was all a figment of our imagination.

This is confusing demand with supply.
We really did produce all the goods and services counted in GDP; we were able to do that because we had willing workers, a sufficient capital stock, the right technology, and so on.

What is true is that some of the spending that created demand for those goods and services was debt-financed, and those debtors can’t continue to spend the way they did. But that doesn’t say that the capacity has somehow ceased to exist; it only says that if we want to keep the capacity in use, someone else has to spend instead. In other words, past growth wasn’t an illusion, or a fraud; but we need policies to sustain aggregate demand.
And yes, I have a model.

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