I think even when the answer is "right" in some sense, it should probably come within the context of a bunch of caveats, explanations, etc.
But maybe I'm just weird. Oftentimes when my wife or kids ask me a question, I take a deep breath and start to say something like "I know what you're asking, but there's not a simple or straightforward answer; it's important to first understand ____ or define ____..." by which time they get frustrated with me.