Karl Sabbagh on this year’s Edge question: I used to believe that there were experts and non-experts and that, on the whole, the judgment of experts is more accurate, more valid, and more correct than my own judgment. But over the years, thinking – and I should add, experience – has changed my mind. What experts have that I don’t are knowledge and experience in some specialized area. What, as a class, they don’t have any more than I do is the skills of judgment, rational thinking and wisdom. … Most of us confuse expertise with judgment. …