Sometimes it's like yelling at a basketball with these types of people.. Those that won't "see" or "listen" to the facts, will NEVER get it. BUT, if, on occasion, they are reminded with facts, and the notion that they are so wrong, MAYBE they'll at least remember.
Too many times, arguments have been made in such a polite manner, that those who are blind, will never be enlightened. I agree to never diminish a position to the point of pointless insults, I just get frustrated arguing with a basketball,..