Let me note that the joint statement by the government and the Bank released in January 2013 indicated that "the Bank recognizes that the inflation rate consistent with price stability on a sustainable basis will rise as efforts by a wide range of entities toward strengthening competitiveness and growth potential of Japan's economy make progress.
Did you figure that it might have a chance of working that way? The message was expected to calm the markets, but I also knew this message would be sustained if the countries undertook reforms needed to cement those lower spreads and to 5 / 10  BIS central bankers' speeches  produce sustainable growth.