A recent default by the U.S. Postal Service has revived talk about privatizing the post office, but the U.S. mail hasn't come close to outliving its usefulness. While thumbing through the household mail one recent day — a bill from the vet, a statement from the bank, 47 come-ons for low-interest credit cards and a birthday card from Grandma — I pondered the following riddle:
More: continued here
