Tuesday, July 15, 2008

Wesco Financial 1990 Letter

Great find by Dual_Bid on the MSN Berkshire Board.
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Also, if you own the latest edition of Peter Bevelin's Seeking Wisdom: From Darwin to Munger, check out page 268 where he gives Charlie's excerpt as a lesson on why bad lending happens so often. The current financial crisis provides further evidence of this and also shows the wisdom in Mark Twain's quote: "History doesn't repeat itself, but it rhymes." The present situation was very likely avoidable.
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Mr. Munger's insights on the lending business:
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Granting the presence of perverse incentives, what are the operating mechanics that cause widespread bad loans (where the higher interest rates do not adequately cover increased risk of loss) under our present system? After all, the bad lending, while it has a surface plausibility to bankers under cost pressure, is, by definition, not rational, at least for the lending banks and the wider civilization. How then does bad lending occur so often?

It occurs (partly) because there are predictable irrationalities among people as social animals. It is now pretty clear (in experimental social psychology) that people on the horns of a dilemma, which is where our system has placed our bankers, are extra likely to react unwisely to the example of other peoples' conduct, now widely called "social proof". So, once some banker has apparently (but not really) solved his cost-pressure problem by unwise lending, a considerable amount of imitative "crowd folly", relying on the "social proof", is the natural consequence. Additional massive irrational lending is caused by "reinforcement" of foolish behavior, caused by unwise accounting convention in a manner discussed later in this letter. It is hard to be wise when the messages which drive you are wrong messages provided by a mal-designed system.

In chemistry, if you mix items that explode in combination, you always get in trouble until you learn not to allow the mixture. So also, in the American banking system. To us, a lot of foolish, unproductive lending and many bank insolvencies are the natural consequences, given existing American banking culture, of the combination of the following two elements alone:

(1) virtually unlimited deposit insurance; and

(2) uncontrolled interest rates on insured deposits.

These two elements combine to create a Gresham's law effect, in which "bad lending tends to drive out good." Then, if factor (3) below is added to an already unsound combination, we think deposit-insurance troubles are sure to be further expanded -- and not by a small amount:

(3) relatively unregulated, non-insured, low-cost "non-bank" banks.

Moreover, when the government starts suffering big deposit-insurance losses, if it continuously responds (in a natural, unthinking reaction) by raising deposit-insurance prices, we think it creates a "runaway-feedback" mode and makes its problems worse. This happens because the government, by adding even more cost pressure on banks, increases the cause of the troubles it is trying to cure. The price-raising "cure" is the equivalent of trying to extinguish a fire with kerosene.

Many eminent "experts" would not agree with our notions about systemic irresponsibility from combining (1) "free-market" pricing of interest rates with (2) government guarantees of payment. If many eminent "experts" are wrong, how could this happen? Our explanation is that the "experts" are over-charmed with an admirable, powerful, predictive model, coming down from Adam Smith. Those discretionary interest rates on deposits have a "free-market" image, making it easy to conclude, automatically, that the discretionary rates, like other free- market processes, must be good. Indeed, they are appraised as remaining good even when combined with governmental deposit insurance, a radical non-free-market element.

Such illogical thinking, displays the standard folly bedeviling the "expert" role in any soft science: one tends to use only models from one's own segment of a discipline, ignoring or
underweighing others. Furthermore, the more powerful and useful is any model, the more error it tends to produce through overconfident misuse.
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This brings to mind Ben Graham's paradoxical observation that good ideas cause more investment mischief than bad ideas. He had it right. It is so easy for us all to push a really good idea to wretched excess, as in the case of the Florida land bubble or the "nifty fifty" corporate stocks. Then mix in a little "social proof" (from other experts), and brains (including ours) often turn to mush. It would be nice if great old models never tricked us, but, alas, "some dreams are not to be." Even Einstein got tricked in his later years.
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