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As the world’s most powerful leaders met at the United Nations General Assembly this week, another annual ritual was bringing hundreds of scholars, officials, aid workers and journalists to gatherings on the UN’s fringes to discuss the fate of the world’s least powerful people. There’s a sense, this year, that everything has changed. The poor are still with us, but they aren’t who they used to be. And “ending poverty” doesn’t mean what it used to mean. It’s time to change the game.