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For the late John Kenneth Galbraith, an acute observer of market folly, finance and innovation were fundamentally incompatible. Every new financial instrument, he said, "is, without exception, a small variation on an established design, one that owes its distinctive character to the ... brevity of financial memory". The world of finance "hails the invention of the wheel over and over again, often in a slightly more unstable version".
After the devastating collapse of a credit bubble that had seen explosive growth in new financial instruments, many politicians might feel Galbraith, if anything, understates the damage wrought by financial innovation.
So the post-bubble policy agenda is bound to address important questions. Is financial innovation a blessing or a curse? Given, at the very least, that it is double-edged, should innovation in finance be curbed, or kept far removed from the conventional commercial banking sector? And how possible is it anyway to control the inventiveness of banking's rocket scientists on Wall Street and in London or the eagerness of their employers to make money from their ideas?
