Susan: I hope to god … that I don't have a student out there who feels like I crossed the line or abused my relationship with them in some way. I think about it all the time. I think constantly about the fact that it's not just by not doing evil that you're a good teacher. You have to really actively do good. You have to constantly be thinking about the fact that you have more power than your student. Even though these students are, like we just said, so smart, it doesn't mean that they're my equal. I always have more power than they do, and I have to be careful. Anyone who has more power than somebody else has to be careful all the time. You can't just assume, I have good intentions, I'm not going to do anything that's going to hurt anyone.