>>6
QFT
My current Calc III professor likes to show the proof of the next topic we're covering whenever we start a new chapter. About 25% of it goes right over my head. Most of the others in my class seem to understand about 10% of it.
It's great of her for at least making the effort to prove she isn't full of shit. But to be honest, she's kind of a mediocre teacher. It's about impossible to explain concepts as confusing as Calculus proofs in the span of a single class and still leave the majority of the time to really teaching the lesson.