Debate clubs have you argue points that you don't necessarily agree with, they compete in rhetorics, not proving they are right. A wise man argues not to prove

Debate clubs have you argue points that you don't necessarily agree with, they compete in rhetorics, not proving they are right. A wise man argues not to prove he's right, he's arguing to become right. Assuming (or at least allowing) your "opponent" knows something you don't is about all it takes to take a casual debate from a nuisance to learning experience.