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Cognitive Biases

The Stiglitz Syndrome

Taleb calls it the Stiglitz syndrome when someone fails to detect a hazard, helps create it, and later believes they predicted it. His criticism connects selective memory and blindness to fragility with a lack of accountability for professional advice.

THE IDEA

The Stiglitz Syndrome

There is something more severe than the problem with Thomas Friedman, which can be generalized to represent someone causing action while being completely unaccountable for his words.

The phenomenon I will call the Stiglitz syndrome, after an academic economist of the so-called “intelligent” variety called Joseph Stiglitz, is as follows.

Remember the fragility detection in Chapter 19 and my obsession with Fannie Mae. Luckily, I had some skin in the game for my opinions, be it through exposure to a smear campaign. And, in 2008, no surprise, Fannie Mae went bust, I repeat, costing the U.S. taxpayer hundreds of billions (and counting)—generally, the financial system, with similar risks, exploded. The entire banking system had similar exposures.

But around the same period, Joseph Stiglitz, with two colleagues, the Orszag brothers (Peter and Jonathan), looked at the very same Fannie Mae. They assessed, in a report, that “on the basis of historical experience, the risk to the government from a potential default on GSE debt is effectively zero.”1 Supposedly, they ran simulations—but didn’t see the obvious. They also said that the probability of a default was found to be “so small that it is difficult to detect.” It is statements like these and, to me, only statements like these (intellectual hubris and the illusion of understanding of rare events) that caused the buildup of these exposures to rare events in the economy. This is the Black Swan problem that I was fighting. This is Fukushima.

Now the culmination is that Stiglitz writes in 2010 in his I-told-you-so book that he claims to have “predicted” the crisis that started in 2007–2008.

Look at this aberrant case of antifragility provided to Stiglitz and his colleagues by society. It turns out that Stiglitz was not just a nonpredictor (by my standards) but was also part of the problem that caused the events, these accumulations of exposures to small probabilities. But he did not notice it! An academic is not designed to remember his opinions because he doesn’t have anything at risk from them.

At the core, people are dangerous when they have that strange skill that allows their papers to be published in journals but decreases their understanding of risk. So the very same economist who caused the problem then postdicted the crisis, and then became a theorist on what happened. No wonder we will have larger crises.

The central point: had Stiglitz been a businessman with his own money on the line, he would have blown up, terminated. Or had he been in nature, his genes would have been made extinct—so people with such misunderstanding of probability would eventually disappear from our DNA. What I found nauseating was the government hiring one of his coauthors.2

I am reluctantly calling the syndrome by Stiglitz’s name because I find him the smartest of economists, one with the most developed intellect for things on paper—except that he has no clue about the fragility of systems. And Stiglitz symbolizes harmful misunderstanding of small probabilities by the economics establishment. It is a severe disease, one that explains why economists will blow us up again.

The Stiglitz syndrome corresponds to a form of cherry-picking, the nastiest variety because the perpetrator is not aware of what he is doing. It is a situation in which someone doesn’t just fail to detect a hazard but contributes to its cause while ending up convincing himself—and sometimes others—of the opposite, namely, that he predicted it and warned against it. It corresponds to a combination of remarkable analytical skills, blindness to fragility, selective memory, and absence of skin in the game.

When to use it

  • Financial institutions analyzing tail risks and relying on historical data without considering black swan events.

  • Policy makers commissioning risk reports from academics who lack real-world consequences for their advice.

  • Corporate leaders making decisions based on expert opinions that are not backed by personal accountability.

  • Media commentators making confident predictions about economic trends without facing repercussions for being wrong.

FROM THEORY TO EVERYDAY LIFE

In practice

01

Fannie Mae Risk Assessment

Taleb criticizes a Fannie Mae risk report by Joseph Stiglitz and the Orszag brothers for treating the government’s default exposure as negligible. He argues that such assessments encouraged fragile exposures and disputes Stiglitz’s later claim to have predicted the 2008 crisis. These are Taleb’s allegations and interpretation of the episode.

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A MOMENT TO REFLECT

Put it to work.

  1. How can you ensure you have a personal stake in the outcomes of your predictions or assessments?

  2. In what situations have you observed the Stiglitz syndrome in your own field or in public discourse?

  3. How can organizations encourage accountability for risk assessments and avoid the illusion of understanding rare events?

Connected ideas

Another lens can bring the same problem into focus.

CONTINUE THE CONVERSATION

Source texts

  • Antifragile (Nassim Nicholas Taleb)
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