agreed, and I said this: "I think these things are good to know as general knowledge but i'd be lying to myself if I said it is relevant to our jobs."
Sure a lot of what I learned is not relevant, but if you asked me to guess which parts would be relevant and which would not I would have guessed wrong.
Agreed, a good guesser would allocate his cheating more accurately by pinpointing the classes that are actually useless, IF his goal was just to learn what is needed.