In a famous scene of the movie The Dark Knight, the Joker asks a mobster: “Why so serious?” In another scene, he burns a huge pile of cash just to send a message to the city of Gotham. In my opinion, good movies always try to send a message; a question or thought that keeps lingering long after the movie has finished. Sometimes, these thoughts find resonance in a very different area, such as an economic theory from more than a hundred years ago. Was the Joker actually a critical economist? Did his message convey more than love for absolute chaos?