"It is the somewhat gratifying lesson of Philip Tetlock's new book . . . that people who make prediction their business—people who appear as experts on television, get quoted in newspaper articles, advise governments and businesses, and participate in punditry roundtables—are no better than the rest of us. When they're wrong, they're rarely held accountable, and they rarely admit it, either. . . . It would be nice if there were fewer partisans on television disguised as "analysts" and "ex...
