Volcker: time is growing short

There's more about trade and fiscal balances, etc., but I thought the following was particularly good.

NY Review of Books: ... I think it is fair to say that for some time the dominant approach of economic theorizing, increasingly reflected in public policy, has been that free and open financial markets, supported by advances in electronic technology and by sophisticated financial engineering, would most effectively support both market efficiency and stability. Without heavily intrusive regulation, investable funds would flow to the most profitable and productive uses. The inherent risks of making loans and extending credits would be diffused and reallocated among those best able and willing to bear them.

It is an attractive thesis, attractive not only in concept but for those participating in its seeming ability to generate enormous financial rewards. Our best business schools developed and taught ever more complicated models. A large share of the nation’s best young talent was attracted to finance. However, even when developments seemed most benign, there were warning signs.

Has the contribution of the modern world of finance to economic growth become so critical as to support remuneration to its participants beyond any earlier experience and expectations? Does the past profitability of and the value added by the financial industry really now justify profits amounting to as much as 35 to 40 percent of all profits by all US corporations? Can the truly enormous rise in the use of derivatives, complicated options, and highly structured financial instruments really have made a parallel contribution to economic efficiency? If so, does analysis of economic growth and productivity over the past decade or so indicate visible acceleration of growth or benefits flowing down to the average American worker who even before the crisis had enjoyed no increase in real income?

There was one great growth industry. Private debt relative to GDP nearly tripled in thirty years. Credit default swaps, invented little more than a decade ago, soared at their peak to a $60 trillion market, exceeding by a large multiple the amount of the underlying credits potentially hedged against default. Add to those specifics the opacity that accompanied the enormous complexity of such transactions.

The nature and depth of the financial crisis is forcing us to reconsider some of the basic tenets of financial theory. To my way of thinking, that is both necessary and promising in pointing toward useful reform.

One basic flaw running through much of the recent financial innovation is that thinking embedded in mathematics and physics could be directly adapted to markets. A search for repetitive patterns of behavior and computations of normal distribution curves are a big part of the physical sciences. However, financial markets are not driven by changes in natural forces but by human phenomena, with all their implications for herd behavior, for wide swings in emotion, and for political intervention and uncertainties. ...