Next time you meet a science professor, ask her if she ever worries that her findings might be wrong. If she worries that she chose an impossible problem to study, or that she overlooked some important evidence along the way. If she worries that one of the many roads not taken was perhaps the road to the right answer that she’s still looking for. Ask a science professor what she worries about. It won’t take long. She’ll look you in the eye and say one word: “Money.”
