PhD student: Professor X, do you agree with the argument in my draft that A implies B, and therefore leads to C. I especially need help on this point. When do I get the feedback on the draft I sent you?
Professor X: You should be able to work independently.
[After 3 weeks]
Professor X: Are you making progress on your dissertation?
PhD student: I'm stuck on this A, B, C argument. The lit says little about it.
Professor X: Why don't you ask me? You should just ask me, you know.