Steve and I had a good Twitter exchange with Tom Ricks about whether or not political science is useless to policymakers, particularly quantitative work and modeling. I thought this exchange was funny because today I saw that Colin Kahl, friend and more importantly, a damn good political scientist, was just appointed as Vice President Biden's National Security Advisor. Ricks' broadside has provoked a few choice blog posts from Steve, Paul Staniland, Tom Pepinsky, and Henry Farrell. (Dan Drezner also had a good one on the topic from 2012). I also thought Ezra Klein's column from a week or so...







