The following is a summary of Ruccio’s lecture Tuesday 2/26 in Marxian Economics.
One of the basic assumptions of neoclassical theory is both consumers and firms are price takers. Each individual attempts to maximize its profit/utility based on the given price. By determining the maximization at multiple prices, the demand/supply curves can be derived. These curves are graphed and at the intersection is the equilibrium price and quantity.
This basic logic revolves around both the firm and consumer “taking” the given price.
The question remains: who sets the price? The easy (and seemingly obvious) answer is from equilibrium. But how is this equilibrium achieved? The only answer our class offered were variations of “It just happens”. The logic would start, “Well the demand curve moves out and then there is a new equilibrium.” Which makes plenty of sense on a graph but none in the real world. How do firms and consumers achieve and agree upon this equilibrium? Both are price takers. They accept the price of the market.
The answer is there must be a price setter: an auctioneer. This theoretical auctioneer calls out prices until the market is satisfied. That means that this process is not instantaneous but a temporal progression toward equilibrium. Also the auctioneer represents a third unexplained actor in the market.
NCL theory has admitted to the existence of an auctioneer but assumes that she is unbiased. This seems doubtful unless there are computers calculating these prices. As we know, there is no auctioneer at the check out line of grocery stores. Where the price is determined and who is determining it, is certainly much more complicated than the nice clean graph NCL theory presents us with.
Ruccio sent out these two articles after the lecture
by Deirdre McCloskey
McCloskey discusses the auctioneer as conversation and game theory, emphasizing that this apparent contradiction does not invalidate the logic behind supply and demand.
This book review emphasizes more the irrationality of consumers.