Joseph Stiglitz, Nobel prize-winning economist and professor of economics at Columbia University, waits to speak during a protest held by the Fed Up Coalition during the Jackson Hole economic symposium, sponsored by the Federal Reserve Bank of Kansas City, at the Jackson Lake Lodge in Moran, Wyoming, U.S., on Thursday, Aug. 27, 2015. The symposium gathers central bankers, finance ministers, academics, and market participants to discuss the theme of "Inflation Dynamics and Monetary Policy". Photographer: David Paul Morris/Bloomberg via Getty Images