<p>My time doesn't grow on trees, but sometimes I know what I have doesn't qualify as an answer, so I point toward what I think the right answer is in a comment.  Two or three sentences is still more than zero, and it can help someone who is both unsure, thinking along the right line, and needing a second opinion to help.  Sometimes I'm wrong, and the comment elicits a counter-comment (@whuber, I'm looking at you) that is much more technically correct and the correct answer comes from there.</p>
