Both in the US and Europe, there is much talk of bank regulation to stop another boom and bust. It will not work. The time will come, perhaps fifteen years from now, when economies will seem to be on a path of steady growth. People will say, yet again, that this time the growth is sustainable. There will be pressure to remove the regulations, which will be seen as unduly restrictive. Politicians will concede. In any case, regulations can always be worked-around, through the invention of ingenious schemes not envisaged when the regulations were devised. Like all its predecessors, growth will turn insidiously to boom followed by bust.