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PRINCETON, NJ - OCTOBER 12: Princeton Professor Angus Deaton speaks about winning the Nobel Prize in Economics at a press conference on October 12, 2015 in Princeton, New Jersey. The Nobel Committee said: 'To design economic policy that promotes welfare and reduces poverty, we must first understand individual consumption choices. More than anyone else, Angus Deaton has enhanced this understanding.' (Photo by Jessica Kourkounis/Getty Images)

PRINCETON, NJ - OCTOBER 12:  Princeton Professor Angus Deaton speaks about winning the Nobel Prize in Economics at a press conference on October 12, 2015 in Princeton, New Jersey. The Nobel Committee said: 'To design economic policy that promotes welfare and reduces poverty, we must first understand individual consumption choices. More than anyone else, Angus Deaton has enhanced this understanding.' (Photo by Jessica Kourkounis/Getty Images)