ROGER MARTIN SAYS THE “What would have to be true?” question has become the most important ingredient of his strategy work, and it’s not hard to see why. The search for disconfirming information might seem, on the surface, like a thoroughly negative process: We try to poke holes in our own arguments or the arguments of others. But Martin’s question adds something constructive: What if our least favorite option were actually the best one? What data might convince us of that?