I agree with Gary Gorton:
Banking must not be left in the shadows, by Gary Gorton, Commentary, Financial Times: ... Addressing the details of the recent financial crisis leaves open the larger question of how it could have happened in the first place. ... One of the findings of the Financial Stability Board report is that the global shadow banking system grew to $62tn in 2007, just before the crisis. Yet we are only now measuring the shadow banking system. ...
Measurement is the root of science. Our measurement systems, national income accounting, regulatory filings and accounting systems are useful but limited. ... Now we need to build a national risk accounting system. The financial crisis occurred because the financial system has changed in very significant ways. The measurement system needs to change in equally significant ways. The efforts made to date focus mostly on “better data collection” or “better use of existing data” – phrases that, at best, suggest feeble efforts. A new measurement system is potentially forward-looking in detecting possible risks.
Another problem is conceptual. Why weren’t we looking for the possibility of bank runs before the crisis? The answer is that we did not believe a bank run could happen in a developed economy. ... Why did we think that? For no good reason. But, when an economic phenomenon occurs over and over again, it suggests something fundamental... Another law, we now know, is that privately created bank money is subject to runs in the absence of government regulation.
I'll just add the periodic reminder that we do not yet have the regulation in place that is needed to address the problem of bank runs of "privately created bank money." Gary Gorton is skeptical that we can ever solve this problem, that's one of the pointsof th ecolumn, but if that's the case then we should be doing all we can to ensure that the consequences of a shadow bank run are minimized, and there is much more we can do along these lines.