"Discussion is an exchange of knowledge; an argument is an exchange of ignorance."
Robert Quillen (1887-1948)
Try mentioning this point the next time someone is yelling at you. Sure to be a winner.
And while we're on this subject, don't you think it's just terminally annoying when 4 or 5 talking heads sit around the table on cable news and talk or yell at each other, simultaneously? Gee whiz, I score that a zero for information value, and a minus-6 for entertainment value…
Also see: Malcolm Forbes on education