The Bernanke era (or should we say the era of anticipating the Bernanke era?) is just about 48 hours old, but it seems intent on distinguishing itself from the Greenspan age by rousing the bond market to rethink its formerly dispassionate view of the future. Whether the new-found sobriety among those who trade debt lasts beyond tomorrow is unclear, but for now there’s a new elephant in trading rooms across the country.