Robert Stacy McCain instructs us in Contemporary Logic 101:
Now, it happens that I am quite lazy in my rhetorical methods. That is to say, I understand that the object of the argument is to win the argument. In politics, we find that most people have profound partisan prejudices, so that there is no hope of persuading a Democrat to support, say, tax cuts or a larger defense budget. Therefore, when we find ourselves confronted with an antagonist in public argument, the simplest way to win is to ask ourselves, “How do I demonstrate that this person is a fool?”
My methodology in this regard was developed from years of youthful studies of military history: Locate the weakest point of the antagonist’s argument and pile onto that point with everything you’ve got. Deliver a crushing blow at the point of attack, and then wait for the response. The antagonist will invariably make some new error in attempting to defend the point you’ve attacked and — rather than continue your previous attack — you then shift to attacking his new error. “Unfair!” the antagonist will shriek, but as they say down home, “I ain’t never heard of no fair fight.”
These tactics work best against arrogant fools. I’m always on the lookout for such people, who always begin with the presumption that they are smarter than me and, when the argument is over, never can figure out how they got beat by a dumb hillbilly.
For some of them, it will take the equivalent of a deathbed conversion to bring the light to their eyes.