"What if those gaps between the economic elite and the general public are created not by differences in expertise but in priorities? An overarching theory of what we missed in the march toward a hyper-efficient global economy: Economic efficiency isn’t all it’s cracked up to be. Maybe the people who run the world have spent decades pursuing goals that don’t scratch the itches of large swaths of humanity . Perhaps the pursuit of ever higher gross domestic product misses a fundamental understanding of what makes most people tick. Against that backdrop, support for Mr. Trump and for the British withdrawalare just imperfect vehicles through which someone can yell, “Stop.” Consider an experiment published last year in the journal Science. Economists tested people: they could either be greedy and keep tokens that had real cash value, or share them with others. Read the fascinating results: