I disagree with your communication course. In technical discussions, asking "why?" is one of the most important things you can do. You are ignorant. The person you are speaking to is not, and they are teaching you. But in order to teach you, they need to know what you don't know. Asking "why?" tells them what to explain.

I agree with danShumway's take: if I received your question, I would furrow my brow, pause for a moment trying to understand what the real question is, then probably plainly state: "It doesn't. Why are you asking?" Then you would explain that it seems to you like it would solve the problem, and I would explain why it doesn't.