The phrases "You do realize that" and "I'll let you figure out why" are condescending. The tone of your post is rude. Moreover, you're clearly the one who doesn

The phrases "You do realize that" and "I'll let you figure out why" are condescending. The tone of your post is rude. Moreover, you're clearly the one who doesn't understand: The prior poster was proposing a checker pattern of reflective material on the background.