Wondering what possible expertise Greenspun brings to this arena. Worse, this post of his is just a long list of assertions without any references, supporting material or backup. I guess we're just supposed to accept on faith that he knows what he's talking about. Which is kind of how we got into this cluster F in the first place, isn't it? Thinking that your experience in specialty X translates to great insights int…
Then, the intermediate-level books and classes teach you that some of that intro-level supply-demand stuff is pretty wrong. It only operates under all sorts of unrealistic conditions, kind of like equations in high school physics which disregard friction. So intermediate econ outline all sorts of complications which supposedly help in the real world.
Then, in the seminar-level classes, you learn that none of the intermediate-level theories really ever worked except by accident, and no one who tries to predict or model real-world economic conditions agrees on anything.