As Danny told me, “Being wrong is the only way I feel sure I’ve learned anything.” Danny isn’t interested in preaching, prosecuting, or politicking. He’s a scientist devoted to the truth. When I asked him how he stays in that mode, he said he refuses to let his beliefs become part of his identity. “I change my mind at a speed that drives my collaborators crazy,” he explained. “My attachment to my ideas is provisional. There’s no unconditional love for them.”

