On Overcoming Bias, Kai Chang recounts "an exceptionally powerful teaching technique employed by an economics professor of mine at university":
"Now I know some of you have already heard of me, but for the benefit of those who are unfamiliar, let me explain how I teach. Between today until the class right before finals, it is my intention to work into each of my lectures ... one lie. Your job, as students, among other things, is to try and catch me in the Lie of the Day." And thus began our ten-week course.
Cool article. :-)