Milestone birthdays come in many flavors. I won’t list them all but the 16th and the 30th are two of the best known. When someone hits upon a milestone it is customary to make a big deal of it. You have no doubt heard of folks receiving black roses for their 30th or some other birthday that is supposed to mark being old. The Bicentennial birthday of the United States is probably the best known and probably the most celebrated birthday ever observed at least in the U.S. and it gives us some gui.