Showing posts with label Taleb. Show all posts
Showing posts with label Taleb. Show all posts

03 March 2009

The Problem with the Banking System and the Failure of Economics


This is a discussion of the financial crisis and economics between Nassim Taleb and Daniel Kahneman on January 27 in Munich.

It is an important discussion for anyone looking beyond the surface into our current financial crisis.

There is a use of jargon and technical terms at some points but not overmuch. It is useful if you just listen, and obtain what you can, and do not fret over that for which you are not grounded by education or experience.

If what they say is valid, there are enormous implications for our financial system and economics as a profession.

The economists are sure to hate it, in particular the Americans who are enamored of equations and studies to a fault. There is a new school of Economics that will rise out of this financial crisis, as Keynesianism rose out of the 1930 and monetarism the 1970's.

If I had been there, I would have made a stronger point that people tend to use these equations, these irrelevant maps as it were, as 'excuses' or rationales for doing things which they know are wrong, but wish to do anyway because it is to their short term benefit.

Taleb is directionally correct about his prescription for the banking system and financial instruments. Banks, especially large ones, must be simple, transparent, stable to a fault. Hedge funds and speculation is another matter completely.

There was a wisdom in the limitations imposed by Glass-Steagall. More profound than most realize. And the bankers hated it because it limited their ability to game the system.

And this confirms that Bernanke and Geithner and Summers are taking us in entirely the wrong direction, and are going to make this crisis much worse.

You may wish to start this video about five minutes into this recording since it does not start with the show itself, but people being seated.

Taleb and Kahneman Video Discussion in Munich on January 27

23 February 2009

Nassim Taleb Says "US Financial System Designed to Blow Up"


Nassim Taleb had an extraordinarily good interview on Bloomberg Television today.

It is worth it. The story on Bloomberg does not really capture what he said and how he said it.

Click here to See the Nassim Taleb On Bloomberg Television

07 December 2008

Too Big to Jail


"Among a people generally corrupt, liberty cannot long exist."
Edmund Burke

Although Nassim Taleb makes some excellent points he is a bit narrow in his analysis because of his superior knowledge and experience in a highly specific area of the crisis, which in some ways is a broader cultural crisis.

There may be enough fraud involved in the US over the past twenty years for multiple prosecutions under the RICO statutes. Or it just may be the end result of a general breakdown in morals, from the top down by example perhaps.

One does find some institutions appearing as enablers at the heart of every crisis, from LTCM to Enron to the Accounting Frauds to the Tech Bubble to the Credit Bubble.

No, this was worse than the silence of the witnesses to the assault of Kitty Genovese that gave the label to the bystander effect.

In this case there were 'bystanders' who financially benefited from the assault and who not only kept quiet but actively intimidated and silenced other bystanders through ridicule and fear of retribution. But there are also many who simply did not care then and will not care once the markets rally once again. This is the sad commentary on a nation corrupted by easy money.

There were many bystanders who did call 911 and were ignored because those in the enforcement chain were either asleep on the job or had other competing interests.

The practical problem is that the institutions involved are probably too big to jail.

That is their strength, but ironically also their weakness.


The Financial Times
Bystanders to this financial crime were many

By Nassim Nicholas Taleb and Pablo Triana
December 7 2008 19:18

...Not surprisingly, the Genovese case earned the interest of social psychologists, who developed the theory of the “bystander effect”. This claimed to show how the apathy of the masses can prevent the salvation of a victim. Psychologists concluded that, for a variety of reasons, the larger the number of observing bystanders, the lower the chances that the crime may be averted.

We have just witnessed a similar phenomenon in the financial markets. A crime has been committed. Yes, we insist, a crime. There is a victim (the helpless retirees, taxpayers funding losses, perhaps even capitalism and free society). There were plenty of bystanders. And there was a robbery (overcompensated bankers who got fat bonuses hiding risks; overpaid quantitative risk managers selling patently bogus methods).

Let us start with the bystander. Almost everyone in risk management knew that quantitative methods – like those used to measure and forecast exposures, value complex derivatives and assign credit ratings – did not work and could provide undue comfort by hiding risks Few people would agree that the illusion of knowledge is a good thing. Almost everyone would accept that the failure in 1998 of Long Term Capital Management discredited the quantitative methods of the Nobel economists involved with it (Robert Merton and Myron Scholes) and their school of thought called “modern finance”. LTCM was just one in hundreds of such episodes.

Yet a method heavily grounded on those same quantitative and theoretical principles, called Value at Risk, continued to be widely used. It was this that was to blame for the crisis. Listening to us, risk management practitioners would often agree on every point. But they elected to take part in the system and to play bystanders. They tried to explain away their decision to partake in the vast diffusion of responsibility: “Lehman Brothers and Morgan Stanley use the model” or “it is on the CFA exam” or, the most potent argument, “modern finance and portfolio theory got Nobels”. Indeed, the same Nobel economists who helped blow up the system at least once, Professors Scholes and Merton, could be seen lecturing us on risk management, to the ire of one of the authors of this article. Most poignantly, the police itself may have participated in the murder. The regulators were using the same arguments. They, too, were responsible.

So how can we displace a fraud? Not by preaching nor by rational argument (believe us, we tried). Not by evidence. Risk methods that failed dramatically in the real world continue to be taught to students in business schools, where professors never lose tenure for the misapplications of those methods. As we are writing these lines, close to 100,000 MBAs are still learning portfolio theory – it is uniformly on the programme for next semester. An airline company would ground the aircraft and investigate after the crash – universities would put more aircraft in the skies, crash after crash. The fraud can be displaced only by shaming people, by boycotting the orthodox financial economics establishment and the institutions that allowed this to happen.

Bystanders are not harmless. They cause others to be bystanders. So when you see a quantitative “expert”, shout for help, call for his disgrace, make him accountable. Do not let him hide behind the diffusion of responsibility. Ask for the drastic overhaul of business schools (and stop giving funding). Ask for the Nobel prize in economics to be withdrawn from the authors of these theories, as the Nobel’s credibility can be extremely harmful. Boycott professional associations that give certificates in financial analysis that promoted these methods. Remove Value-at-Risk books from the shelves – quickly. Do not be afraid for your reputation. Please act now. Do not just walk by. Remember the scriptures: “Thou shalt not follow a multitude to do evil.”