I finally gave up around the 30 minute mark. This kind of sophistry is how Keynesians always work. He makes assumptions, assigns those assumptions to others, and then criticizes them for those assumptions. I kept waiting for something he said to be true, nothing was ... at least not up to the 30 minute mark.

While I enjoyed this, his argument against 'supply and demand' or equilibrium economics is totally fallacious. It is not at all necessary to meet those 8 assumptions in order to find equilibrium. In fact, the producer of any good need only know one thing: "How long is the good sitting on the shelf?" If the good is flying off the shelf as fast as it's put there, then demand exceeds supply and the price will rise. If the good is sitting on the shelf until is has cobwebs, then supply exceed demand and the price will fall. Any producer of any good need only know how long their own good sits on a shelf in order to adjust the price.