04/19/2013 08:32 am ET Updated Jun 19, 2013

Paul Krugman: 'Austerity Has Been Sold On False Pretenses'

In this age of information, math errors can lead to disaster. NASA's Mars Orbiter crashed because engineers forgot to convert to metric measurements; JPMorgan Chase's "London Whale" venture went bad in part because modelers divided by a sum instead of an average.

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