Morning Herald: So oil prices crawled off their 11-year low overnight big whoop. Such gyrations are merely part of the present tussle between supply and demand. There's a more serious problem hanging over the oil price that won't be solved by capping a few wells. Passing remarks in a social setting made to me by a former oil industry CEO and current chairman provided some insight into the growing despair about price: uncertainty about how much of the current plunge is merely the cycle, or something structural....