[private role='subscriber']When YieldReport was studying economics (admittedly some time ago), a country with debt equal to 2.3 times its national output (GDP) and a rapidly ageing population might have had trouble borrowing money. Not so in the new world economic order. Japan has such a debt profile and an ageing population but today it did what seems quite unthinkable a year ago. It sold 10 year government bonds at auction...