This post is by Mark Dow
Very few things rouse the rabble as much as an ideological debate. And over the past year it has been looking like we are having the beginnings of a nasty one in economics and finance. The current economic and financial crisis has shaken a few trees and made many go back and question first principles. Often, the answer is that the prevailing received economic and financial wisdom has fallen woefully short.
That said, those who are looking for a debate here may be disappointed. A narrow ideological debate is not the can I wanted to open up. Instead, I thought it would be useful to review from an historical perspective how we got here, and then address why this should matter.
For me, making the transition from economist to trader raised a lot of issues about efficient markets and animal spirits. It underscored the shortcomings of formal training and our incomplete understanding of the human element in finance and economics. As a result, the issue of paradigm shift has been simmering on my backburner for quite some time now.
One of the most important lessons I have learned as a trader is not just that emotions play an outsized role in market dynamics—that much became clear quite quickly—but that the emotions regularly swing, as if they were a pendulum, from one local extreme to the opposite. In other words, around any given trend there are oscillations above and below, moments of high bullishness and high bearishness. Time and time again we transition from moments when any positive statement is met with skepticism to moments when no one dares say anything negative. In short, we slowly change directions, see that the new direction starts to work and jump on, take the new direction too far so that it stops working, and then we start the whole process all over again.
These pendular swings in the market can take anywhere from a couple of weeks to numerous months, and they are marked by a distinct, three part psychological process: denial, migration, capitulation. In the first phase, participants deny that a change in market character is truly afoot. Markets rally on bad news (or sell off on good news) and traders look for others to blame for their trading losses (suggestion: when in doubt blame government; no one will ever disagree.) Then, little by little, traders begin to recognize ‘what is working’, start to question their previous beliefs, and then begin migrating from their old camp to the new. In the last phase, capitulation (or give-up phase), the final holdouts switch camps and jump on the new bandwagon—often in climatic fashion. This then completes the pendular swing.
This manifestation of human nature is not confined to intermediate term swings in the market. It also applies to ideological fashions in economics. At the time of the Great Depression the prevailing ideology was the Austrian Business Cycle School, a variant of the classical school of economics. (This school of thought was responsible for the useful term “creative destruction”). As the Depression took hold, the policy response was to allow the system to purge itself of its excesses. In retrospect, the mainstream view is that this policy response—or lack thereof—severely exacerbated the length and depth of the downturn.
Economists of every stripe have their own pet reasons as to what caused the Great Depression and what got us out of it. Leaving this debate aside, it is not controversial to say that Keynesian polices were perceived to have helped lift the US out of the Depression.