I won't use my professor's name... Tonight was my final presentation for a class called "The Theory of Computation". I went in, and started presenting, and within the first 60 seconds she had interrupted me, claiming she didn't understand what I was saying. And so for the next 45 minutes, she interrupted me every half a minute, saying that my definitions were meaningless. I'd say "In this rule, a Variable maps to a string in the language L consisting of either Terminals or Variables". She'd cut me off and say "I don't know what map means." Every other sentence. At the end, she asked me to identify whether a^n b^n c^m for m,n >= 0 in integers was a context-free grammar. At first I didn't think it was, but then I started to generate a context free grammar for it. She interrupted me -- "Michael, clearly I don't have enough time to explain this to you such that you can understand it. Let's just stop here. Thanks for coming in." argh.