Global income inequality drags down innovation by leaving many creative people without the infrastructure needed to commercialize their ideas, says author and Princeton University researcher Angus Deaton. Building a factory to make cutting-edge new products in Zimbabwe wouldn't work, no matter how good the ideas behind the products, Deaton explains. "It would be a disaster, because Zimbabwe has a corrupt, oppressive government, and nothing works. That's one of the reasons why Zimbabwe is so poor," he says.

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