Why?
You’ve probably seen pretty bad graffiti work in your town. Some people vandalize public property to make a statement. For example, this graffiti aRtIsT wants all passersby to question anything and everything. Well, why is that? What happens if we don’t? Is everything on a need-to-know basis? If so, why is that?
However, this message does have a point. If you ever find yourself arguing with someone else, question everything they say. Best-case scenario, they’ll provide you with the answer you’re looking for that will persuade you to change your mind. Worst-case, they’ll walk away in frustration after digging themselves in a hole of logical fallacies.