If you're a "good" teacher, somebody who is responsible or careful, teaching takes time. Teaching is performative. Students nowadays evaluate you and there's a lot made in these evaluations about how you perform. Maybe you don't have the greatest delivery in the world. But you know a lot, have a lot to offer. So that's pretty unsettling. We've become so image-based and performance-based as a society. You have to be ready to appear on "Jimmy Kimmel Live!" at any moment.