What Ferrucci does see becoming obsolete is the guru model that makes so many policy debates so puerile: “I’ll counter your Paul Krugman polemic with my Niall Ferguson counterpolemic, and rebut your Tom Friedman op-ed with my Bret Stephens blog.” Ferrucci sees light at the end of this long dark tunnel: “I think it’s going to get stranger and stranger” for people to listen to the advice of experts whose views are informed only by their subjective judgment. Human thought is beset by psychological pitfalls, a fact that has only become widely recognized in the last decade or two. “So what I want
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