Frames 1 through 5 from a class I was in a long time ago.
Green: So, class, what is log(a+b) Class: log(a)+log(b) Green: What? That is so very wrong. You all engineers should know better than that. Green: Imagine if you had said that on your job. Green: They'd call you an engineer, but in reality you'd just be a paper pusher. Purple: (thinks) At last I'd still make my engineer's salary...