I am a teacher at heart, and every year, for more than two decades, I have invited people to join me in the classes that I teach at the Stern School of Business at New York University. Since I teach these classes only in the spring, and the first sessions for each of the classes will be in late January, I think this is a good time to provide some details on the classes, including content and structure. If you have read these missives in prior years, much of what I say will sound familiar, but...