This argument has stood the test of time. In an essay in 1945, titled The Use of Knowledge in Society, the Austrian economist Friedrich Hayek showed how prices respond to individuals localized knowledge and desires, leading to changes in the amounts demanded and supplied in the market. A central planner, Hayek said, could not hope to gather up so much dispersed information. It is widely believed that communism collapsed in Eastern Europe because central planning failed to deliver the goods that people wanted. Some criticisms of Smith's first point have been raised, such as the fact that the market might only provide the goods that are wanted by the rich : it ignores the desires of the poor. It also responds to harmful desires - the market can feed drug addiction and promote obesity.