Because Alan focused on important questions, others often contested his answers. But that is what good science is all about: getting many people to work on the most important questions and hashing things out. Someone like Alan, who gets others to focus on the most important questions, accomplishes great good both when others confirm a result and when others show that a seeming result is wrong. And it matters. Too much of economics is either addressing minor questions or addressing big questions with tools t
Source: In Honor of Alan Krueger — Confessions of a Supply-Side Liberal