Tyler Cowen is an American economist, philosopher, and writer, who is a professor at George Mason University, where he holds the Holbert C. Harris Chair of economics. He hosts a popular economics blog, Marginal Revolution, together with his co-author, Alex Tabarrok. Cowen and Tabarrok have also started the website Marginal Revolution University, a venture in online education.
Scott B. Sumner is an economist who teaches at Bentley University in Waltham, Massachusetts. His economics blog, The Money Illusion, popularized the idea of nominal GDP targeting, which says that the Fed should target nominal GDP—i.e., real GDP growth plus the rate of inflation—to better "induce the correct level of business investment". In May 2012, Chicago Fed President Charles L. Evans became the first sitting member of the Federal Open Market Committee to endorse the idea.
After Ben Bernanke's announcement on September 13, 2012, of a new round of quantitative easing, which open-endedly committed the FOMC to purchase $40 billion agency mortgage-backed securities per month until the "labor market improves substantially", some media outlets began hailing him as the "blogger who saved the economy", for popularizing the concept of nominal income targeting.