There's a saying...arguing with an idiot is like teaching a pig to read a watch....it's a waste of time, and it irritates the pig. :)

“Now, Ira – a little respect, please. I have never swindled a man. At most I kept quiet and let him swindle himself. This does no harm, as a fool cannot be protected from his folly. If you attempt to do so, you will not only arouse his animosity but also you will be attempting to deprive him of whatever benefit he is capable of deriving from experience. Never attempt to teach a pig to sing; it wastes your time and annoys the pig.”

by Robert A. Heinlein (July 7, 1907 – May 8, 1988)
from Time Enough for Love
Prelude II