If the business of banking is inherently unstable, it would long ago have been supplanted by a stable structure that performs the same functions without instability.Hoo boy. If there is a problem, the market would have solved it. I can't top Black in his particular explanation of why this remark is so goofy, but I would generalize and make it a bit more abstract. The point is that there is not now and never has been such a thing as the market. Markets (like governments) are cultural artifacts, created out by humans out of a whole range of possibilities some half-forgotten, others half-remembered, most lost in a substrate of inarticulate presumption invisible even--or most of all--to the person who relies on them.
There amay have been a time when we were so culturally isolated that we couldn't fully comprehend the point. We've way outgrown that kind of naivete now. We have the work of, e.g.,Milhaupt and Pistor