It's actually a tribute to the quality of economics teaching that they have persuaded so many generations of students to believe in so much that seems so counter to what the world is like. Many of the things that I'm going to describe make so much more common sense than these notions that seem counter to what ones eyes see every day.

"Nobel Prize Lecture" Information and the Change in the Paradigm in Economics, at Aula Magna, Stockholm University, (2001-12-08).