heh... my thoughts exactly. I was completely self taught for about 20 years and didn't have a clue what people were talking about about with the phrygian, mixolidian stuff. When I finally started learning it my first reaction was "that's all it is??"
I already knew all the stuff, I just didn't know the names for em.

Guys would be showing me stuff that seemed really complicated and I'd just go "oh... you mean that doohickey thing with the left hand...why didn't you just say so"