Artists and Frenemies

Most people think of conflict as something to be avoided, but there's another way to view it -- as creative and generative. In his book "The Art of Rivalry," Boston Globe art critic Sebastian Smee explores how intense conflicts, broken friendships and personal reconciliations fueled some of the most dramatic breakthroughs in Modern Art. He tells Steve Paulson that the rivalry between Picasso and Matisse contributed, in part, to cubism.