Originally Posted by antennahead

Don't ever lower yourself to another's dimished standard. If you know they are a "know it all", or whatever personality trait most people they encounter see as a flaw, that take that for what it is, a character flaw in their personality, and move on/rise above it. You can also bow out with class by saying something like "you know, your opinion is always the only opinion as far as you're concerned, and I don't have the time to dignify your ignorance or lack of study on the subject by engaging you in an argument, when your mind is already closed to opposing or alternate views" ............. then walk off with a smug grin on your face!

John