5-Universal Laws Of Human (Investment) Stupidity

 | May 11, 2017 10:11AM ET

In 1976, a professor of economic history at the University of California, Berkeley published an essay outlining the fundamental laws of a force he perceived as humanity’s greatest existential threat: Stupidity.

Stupid people, Carlo M. Cipolla explained, share several identifying traits:

  • they are abundant,
  • they are irrational, and;
  • they cause problems for others without apparent benefit to themselves

The result is that “stupidity” lowers society’s total well-being and there are no defenses against stupidity. According to Cipolla:

The only way a society can avoid being crushed by the burden of its idiots is if the non-stupid work even harder to offset the losses of their stupid brethren.

Let’s take a look at Cipolla’s five basic laws of human stupidity as they apply to investing and the markets today.

h3 Law 1: Always and inevitably everyone underestimates the number of stupid individuals in circulation./h3

No matter how many idiots you suspect yourself surrounded by you are invariably low-balling the total.

In investing, the problem of investor “stupidity” is compounded by a variety of biased assumptions that are made. Individuals assume that when the media publishes something, the superficial factors like the commentator’s job, education level, or other traits suggest they can’t possibly be stupid. We, therefore, attach credibility to their opinion as long as it confirms our own.

This is called “confirmation bias.”

If we believe the stock market is going to rise, then we tend to only seek out news and information that supports our view. This confirmation bias is a primary driver of the psychological investing cycle of individuals as shown below. I discussed this previously in why “Media Headlines Will Lead You To Ruin.”