I just got back from the meeting of the Economic and Business History Society in Montreal, and I was going to blog about that, but then someone tweeted about this stupid essay at
Evonomics. Eric Beinhocker writes about the problems with traditional economics
and the benefits of the new economics. The primary problem with his essay is that
his description of traditional economics is what would generally be referred to as
bullshit. He conveniently provides a
table from his book, The Origin of Wealth, which I was fortunate enough to have
never heard of before.
Pick any element you want. For instance the first one
declares that traditional economics assumes that everyone has perfect
information. Really? Even principles textbooks cover imperfect information and
uncertainty. For Dynamics, he states that traditional economics assumes that
the “The Economy automatically goes to equilibrium where social welfare is
maximized.” Find me a principles textbook that doesn’t cover externalities,
public goods, and monopoly. I like his description of the New Economics even
better. “Economy is a highly dynamic system that can go far from equilibrium
and become trapped in a suboptimal state.” It can become trapped in a state
that is far from equilibrium? Does this guy not know what equilibrium means?
Stability is the essential characteristic of equilibrium. In the absence of
some sort of shock the situation won’t change. Later he refers to market
failures, but he does so at the same time that he declares traditional
economics assumes a natural tendency toward efficiency. Market failure is a
situation in which the market equilibrium is inefficient. Moreover, equilibrium
is a property of models, not reality. Reality is never stable. Equilibrium is
nevertheless useful for helping us to consider the direction of change and
possible unintended consequences. In the
case of innovation, what he ascribes to new economics is a feature of
traditional economics and what he ascribes to traditional economics is not.
Traditional economists have long studied the factors that are likely to encourage
or impede innovation.
He describes one of the implications of new economic
thinking for policy as follows:
Regulators take an action to
address a perceived problem, that changes the perceptions and actions of market
participants, which in turn creates a new set of problems triggering further
regulator actions, and so on. Over time this infinite chase between fallible
regulators and equally fallible market participants leaves a trail of rules,
structures, and institutions that has a major effect on shaping the evolution
of the economy.
Ironically, this is pretty much a description of my paper "LearningTo Tax: The Political Economy of the Opium Trade in Iran, 1921-1941,"
Journal of Economic History 61(March 2001):95-113. It is ironic because I
regard myself as a pretty traditional economist. I see this paper, and most of my work on history and
institutions, as building on traditional economics not refuting it.
I have taught pretty traditional principles of microeconomics for more than a quarter century, and I still believe that those simple models provide a great deal of value to students.
I'll try to write about EBHS and Montreal later today.