Except for the civic religion on ostentatious display at the annual presidential state of the union address, one can hardly think of a reason for the tradition at all. It's not as though we learn something substantive or even hear a truthful material claim. (Yes, it could be useful in launching a president's reelection campaign.) I'm sure someone somewhere has pointed out that democracy is not only a religion but also the opiate of the masses. When too few people could swallow the silly claim that the head of state represented the applicable deity, a new way was needed to assure the people's...