So it IS a popularity contest

In his Sunday NYT column “An Echo Chamber of Boom and Bust,” Yale economics and finance professor Robert Shiller explained global finance thusly:

…[T]hink of the world economy as driven by social epidemics, contagion of ideas and huge feedback looks that gradually change world views.

So, basically, recessions, depressions, and tight-rolled jeans all have the same cause?

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