When experts on different aspects collaborate they should be able to disagree, not just join a mutual admiration club.

Sir, Tim Harford writes about “a flawed statistical study by Winston Churchill’s scientific adviser Frederick Lindemann that no one had both the technical skill and the political clout to challenge. [It caused] the allied bombing of dense urban areas in Germany during the war, which not only took a terrible toll on civilians but failed in military terms by sparing industrial targets.” “Real change requires experts to collaborate” May 4.

There is a document prepared by the Basel Committee on Banking Supervision dated July 2005 and titled “An Explanatory Note on the Basel II IRB Risk Weight Functions". It can be found on the web site of the Bank for International Settlements.

It is supposed to explain the standardized risk weighted capital requirements for banks decided upon in the Basel II agreements. It does nothing of that sort, mostly because those risk weights are impossible to justify.

For instance assets rated AAA to AA rated, which ex ante perceived safety could cause banks to build up excessive exposures that could be dangerous to the bank system if these turned out ex post risky are assigned a 20% risk weight while; for assets rated a below BB- and that because of their perceived riskiness banks will not voluntarily build up excessive exposures to, and therefore represent no risk to the bank system, even if they turn out even riskier than expected, have been assigned a whopping 150% risk weight.

But that explanation was never challenged. The fact that AAA to AA rated assets could be leveraged 62.5 times by the banks, when compared to the 12.5 times allowed leverage with unsecured loans to unrated entrepreneurs, created the incentive structure for the 2008 crisis, caused by the excessive exposures to the AAA rated securities backed with mortgages to the subprime sector in the US, which turned out very risky; or by the excessive exposures to assets covered by default guarantee sold by AAA rated AIG.

Even after that crisis, the silence on it has persisted. As is our bank systems are doomed to especially large crisis, caused by especially large exposures to assets perceived ex ante as especially safe, but against which when these turn out ex post to be especially risky banks hold especially little capital.

How did the weavers in Basel manage to convince the world that with their regulations the bank systems were fully dressed, and that anyone not seeing that were unfit for their positions, stupid, or incompetent? I have, like the child in Hans Christian Andersen’s “The Emperor’s New Clothes”, shouted out innumerable times that our bank systems are now even worse of than if naked, but this has obviously not sufficed.

Harford opines “good policymaking is now a team effort. It requires different perspectives and a range of specialist expertise. We all must learn to work with people who see the world very differently”

Indeed, and there is of course more than enough “technical skill and the political clout to challenge” these regulations, but yet nothing happens. Could there perhaps be too many disincentives to do so? For instance like then not being invited to Davos? 

Sir, one day historians will scratch their heads trying to figure out the reasons for the world’s now more that thirty years silence, on the outright loony (and statist) risk weighted bank capital requirements. Do you not wonder what they in that respect could say about FT’s?

@PerKurowski

Universities, allow imperfect and perhaps even inadequate minds, to have a voice in your classrooms. That's diversity!

My daughter, an art fanatic, on hearing my explanation about the monstrous mistake of credit-risk weighted capital requirements for banks, pointed me to “The forger’s spell”, a book by Edward Dolnick about the falsification of Vermeer paintings. Was she right!

In it Dolnick makes a reference to Francis Fukuyama having heard Daniel Moynihan opining: “There are some mistakes it takes a Ph.D. to make”. And Dolnick also speculates that perhaps Fukuyama had in mind George Orwell’s comment, in “Notes on Nationalism”, that of: “one has to belong to the intelligentsia to believe things like that: no ordinary man could be such a fool.” 

That is why when now Della Bradshaw reports about “a growing recognition that the world’s intractable problems need business solutions means MBA directors are searching for students with a more diverse background to fill their classrooms” I say: “Way to Go!” “More variety is the spice of classroom life” October 5.

Of course we must inject some confident ordinary minds in the classes in order for these to pose the questions that must be made. My impression is that experts never really try sufficiently to convince other experts of why they are right and others wrong, but they do their utmost when it comes to convincing the non-experts that they are the best experts.

Oh if I only had been in those classes where the minds of sophisticated future bank regulators were trying to estimate unexpected losses in the same direction as those expected losses derived from perceived risks.

My ordinary mind would not have been able to hear such foolishness and keep silence. Don’t you know that out there, in the real world, what is really risky is that what we can wrongly perceive as absolutely safe? I have never heard of a substantial number of persons dying because of bungee jumping. Have you?

As an Executive Director in the World Bank I once stated: "A mixture of thousand solutions, many of them inadequate, may lead to a flexible world that can bend with the storms. A world obsessed with Best Practices may calcify its structure and break with any small wind.” So, universities, please allow for imperfect and even inadequate minds, to also have a voice in your classrooms.

That said, be careful though with what the calls for diversity really means. It could be modern Giuseppe di Lampedusa types wanting to diversify only in order to remain the same.

@PerKurowski ©

Creativity needs a chair in any mutual admiration club to somewhat dent any ongoing groupthink

Sir I agree with Gillian Tett in that “A degree of creativity should be on the college curriculum” March 21. But that must also include making sure that creativity has a chair wherever important decisions are taken.

I say it again… had there for instance been some genuine representation in the Basel Committee of historians, and why not of anthropologists, these would have questioned the wisdom of the risk-weighted equity requirements for banks that have so completely distorted the allocation of bank credit to the real economy.

At least the chance of having someone able to quote Mark Twain in that “bankers are those who lend you the umbrella when the sun shines and want to take it away as soon as it looks like it is going to rain” could have given those central-banker-regulators some second thoughts, while they were doing their groupthink, in their cozy mutual admiration club.

@PerKurowski