Robert Shiller writing in the New York Times:
http://www.nytimes.com/2012/05/20/business/economy/how-national-belt-tightening-goes-awry-economic-view.html
"Consider our current thinking about taxes and government spending. We seem caught up in a “family belt-tightening” metaphor, in which the nation is a family that has outspent its income and is trying to get back in control. The family must cut profligate spending, save and pay down debts. It’s a powerful thought, of course, because we know that mismanagement of household finances can lead to a family’s ruin.But perhaps the most important lesson conveyed by the great economist John Maynard Keynes is that this metaphor, when applied to the national economy, is fundamentally misleading: what is smart for the family is not smart for society as a whole. This idea, sometimes known as the paradox of thrift, is that when we all tighten our belts at once, the economy is so weakened that we end up failing to save more, and instead are all worse off. When that happens, some collective action — government stimulus — is needed."
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