I seriously believe that cartoons are one of the best way to learn economics. I found the cartoon on the invisible hand here. Graphic content is easier to understand and remember. I think students should be given every edge in learning about economics. Using cartoons is that edge. After reading the cartoon, doesn't the joke in day 1, Day 1, "teacher walks in and sits down, points at books. Students figure it out. Some students do not" now make sense?