steepholm

I suppose that depends on what you consider the goal of entering into an argument is. If your goal is to convince yourself, you might as well not even bother: you already think you're right. If, however, the goal is to persuade the other party, it's best - if possible - to speak in their language, avoid giving hostages to fortune, and try not to wind up in a situation where they can walk off smugly convinced of their own superiority because you insulted them. (I'm not very good as those goals myself, but I try.)