Yesterday, I was walking over to the library and I ran into an old colleague who has been dragooned back into teaching macroeconomics on a casual basis. The person was telling me that they were dreading taking the class next week because the topic was banking and the relationship between reserves and the money supply. Accordingly, the person said the chapter in the textbook specified by the lecturer-in-charge was about the money multiplier. The person I met is familiar and sympathetic to Modern Monetary Theory (MMT) and posed the question “how can I do it?”. My answer was that students deserved better and that the lecture should develop the multiplier from a critical perspective so that students know about it but realise how far-fetched it is as a depiction of how the banking system actually operates.