“I love how the postal system has this financial emotional meltdown every three to five years,” comedian Jerry Seinfeld said to the Tonight Show audience a few years back, “that their business model from 1630 isn’t working anymore. I can’t understand how a twenty-first-century information system based on licking, walking, and a random number of pennies is failing to compete.” Funny stuff, except that the United States Postal Service is competing and indeed....