Wilt Chamberlain - easily one of the best basketball players of all time - was a terrible free throw shooter. Except for one season when he changed technique and scored more free throws in one game than anyone ever has. Then, crazily, he gave up the technique. Malcolm Gladwell explains why we often make the wrong decisions, in full awareness that they're wrong. This story was adapted from Gladwell's new podcast Revisionist History, which is produced by Panoply. (28 minutes)