Ryan Avent has a long and characteristically thoughtful post on the recent debate over global stagnation. He focuses on the views of Paul Krugman, Ben Bernanke and Larry Summers, three intellectual heavyweights. In the end I think Ryan’s a tad too polite, although maybe that’s my own frustration showing through. After all, these aren’t just any three economists; they are two of the most influential policymakers in recent years, and the world’s most famous economic pundit.