Gauti Eggertsson is a professor of economics at Brown University. Previously, he worked at the research departments at the International Monetary Fund and the Federal Reserve Bank of New York. He joins the show to discuss his work on the history of liquidity traps and extremely low and even negative interest rates. He and David discuss examples from the Great Depression to Japan in the 1990s to today. Gauti also shares his thoughts on the Fed’s quantitative easing (QE) program and why it failed to return the economy back to normal.