Delong’s error - financial corporation edition
My belief that large, leveraged financial institutions had sufficient caution and sufficient control over their derivatives books that their derivative positions did not pose major systemic risk. [ Brad Delong’s admitted errors]
For both methodological convenience and ideological conformance, modern economics at the macro level treats a firm as if it were a rational profit maximizing individual. But that’s never been true.
The trade of a joint stock company is always managed by a court of directors. This court, indeed, is frequently subject, in many respects, to the control of a general court of proprietors. But the greater part of those proprietors seldom pretend to understand anything of the business of the company, and when the spirit of faction happens not to prevail among them, give themselves no trouble about it, but receive contentedly such half-yearly or yearly dividend as the directors think proper to make to them. This total exemption from trouble and from risk, beyond a limited sum, encourages many people to become adventurers in joint stock companies, who would, upon no account, hazard their fortunes in any private copartnery. Such companies, therefore, commonly draw to themselves much greater stocks than any private copartnery can boast of. The trading stock of the South Sea Company, at one time, amounted to upwards of thirty-three millions eight hundred thousand pounds. The divided capital of the Bank of England amounts, at present, to ten millions seven hundred and eighty thousand pounds. The directors of such companies, however, being the managers rather of other people’s money than of their own, it cannot well be expected that they should watch over it with the same anxious vigilance with which the partners in a private copartnery frequently watch over their own. Like the stewards of a rich man, they are apt to consider attention to small matters as not for their master’s honour, and very easily give themselves a dispensation from having it. Negligence and profusion, therefore, must always prevail, more or less, in the management of the affairs of such a company. It is upon this account that joint stock companies for foreign trade have seldom been able to maintain the competition against private adventurers. They have, accordingly, very seldom succeeded without an exclusive privilege, and frequently have not succeeded with one. Without an exclusive privilege they have commonly mismanaged the trade. With an exclusive privilege they have both mismanaged and confined it.
Adam Smith, Wealth of Nations.