So if you doubled the income of the bottom billion people what would happen?<br>All their prices and costs would double because everyone around them would have double the income.<br>End result: the opportunity cost of those top earners not investing would make the world worse.<br>Also, he says the top 1000 "have enough money" to double the "income" of the bottom billion.<br>What does this mean? The net worth of the top thousand can double their income for a year? The interest earned can double it for eternity? <br>It's basically a meaningless throwaway feel-like-i'm-doing-something-to-get-rid-of-my-professor-guilt line.