Good question! Really showing my nerd with this one. I’m a big math guy, so any self-explanatory math equation is really funny to me. For instance, there’s a physics equation that says horizontal velocity is equal to initial horizontal velocity. I had a student today ask me if he could use that equation to solve for horizontal velocity, which was basically him asking if he could prove that one equals one. I found it hilarious, but I bet most of you didn’t even finish reading this far.