Friday, September 19, 2008

We need an improved "invisible hand", Adam

David Brooks wrote a piece in the NY Times this morning on regulation of the financial industry.

Incidentally, there is essentially no engine today in any product that does not have a "controller" as part of the design, to increase stability, response time, etc. No elevator would stop at the floor without an abrupt "jerk" without a controller. The design of such controllers is in the field called "Control System Engineering."

A sample text book is this one: Feedback Control of Dynamic Systems, by Franklin, Powell, and Emami-Naeini. These are the concepts we need for a "governance" or "regulatory" system that actually works as advertised.

Control system engineering is to complex systems what "civil engineering" is to automobile bridges across rivers -- it is completely general and non-political, it won't tell you where to build or what to build with, but it WILL tell you the required properties of the materials and that some things will simply not work. You can't build the Brooklyn Bridge out of plastic, for example, regardless how cheap it is. You can't design a regulatory system that depends on feedback, for another example, and then blind the sensors that are supposed to determine the feedback.

The advantage of such engineering is that it focuses on issues such as "stability" (a big one right now) and gives power to insight, such as that blinding the eyes of a system will make it drive off the road for sure.\

Search "feedback" or "system thinking" in this weblog for other posts on such matters!
====================================================


One obstacle to a good solution is the incorrect assumption that a process "under control" equates to a small group of people doing "the controlling." Let's keep those separate.
The question of whether we need more "governance" should be distinct from who, or what, should be the active agent. For much of the US History, many have favored Adam Smith's "invisible hand" of the marketplace to do this controlling.
The classic debate over more or less "government" desperately needs this distinction.
The question should be whether there is an improvement on the class of "invisible controllers" that (a) do a better job and (b) are even less corruptable by those who would hijack the process.
There is no question that we have very complex processes running out of control, and that this is not the preferred state. Fine.
The question is how to achieve the "under control" part. The institution called "government" has typically decayed to "a few people" who, regardless of wisdom and intent, have been unable to grasp the com
plexity of the beast or improve on its operation and results.

The deep cynicism resulting from such failure seems related to the abandonment of a goal of prosperity for all and replacement with a goal of "prosperity for me and my friends at everyone else's expense" which turns out to be a short-term illusion, given how interconnected everything is.
These are problems in the area of "control system engineering" and "complex adaptive systems" and the necessary insights are probably in those fields.

No comments: