Lol, IMO on a board devoted to education, suggesting that someone who displays (and even more relevantly, proposes that board members promulgate to their children) ignorance of basic facts of X should take a lesson in X is neither off-topic nor impolite, and therefore, not against netiquette.
So the lesson is, don't post a casual, flip comment, because any particular phrase will be interpreted as encompassing the entire breadth and depth of your knowledge about a particular subject. I shall be sure to enclose a doctoral thesis on my next post.
Now, since you've been so helpful, let me help you:
http://giftedissues.davidsongifted.org/BB/ubbthreads.php/ubb/boardrules/v/1.html
