The Chicagoite “Pure Monetary” Theory of the Business Cycle and the “Dance” of the “Price Level”

But the key problem with Friedman’s Fisherine approach is the same orthodox separation of the micro and macro spheres that played havoc with his views on taxation. For Fisher believed, again, that on the one hand there is a world of individual prices determined by supply and demand, but on the other hand there is an aggregate “price level” determined by the supply of money and its velocity of turnover, and never the twain do meet. The aggregate, macro, sphere is supposed to be the fit subject of government planning and manipulation, again supposedly without affecting or interfering with the micro area of individual prices.

In keeping with this outlook, Irving Fisher wrote a famous article in 1923, “The Business Cycle Largely a ‘Dance of the Dollar’”—recently cited favorably by Friedman—which set the model for the Chicagoite “purely monetary” theory of the business cycle. In this simplistic view, the business cycle is supposed to be merely a “dance,” in other words, an essentially random and causally unconnected series of ups and downs in the “price level.” The business cycle, in short, is random and needless variations in the aggregate level of prices. Therefore, since the free market gives rise to this random “dance,” the cure for the business cycle is for the government to take measures to stabilize the price level, to keep that level constant. This became the aim of the Chicago School of the 1930s, and remains Milton Friedman’s goal as well.

—Murray N. Rothbard, “Milton Friedman Unraveled,” in Economic Controversies (Auburn, AL: Ludwig von Mises Institute, 2011), 904.