[Milner08]

That's a shame, my personal perspective is so long as the question is thoughtful its fine. I sometimes get people commenting "whats this" on a random line and I haven't got time for that (unless its blatantly obvious what they mean), but if you were to ask "Why are you using X, I'm not sure I understand" I would be happy to answer it and walk you through it, you never know maybe we could both learn something.

People are always busy but as a senior engineer I see teaching/helping junior engineers as a big part of the Job and so long as they are willing to put in some effort and think about it I am happy to give up some time to help.