Hardly a new phenomenon. Back in the day (the rotary phones, a dime at the booth day), I noticed that I knew the telephone numbers of quite a few persons whose

Hardly a new phenomenon. Back in the day (the rotary phones, a dime at the booth day), I noticed that I knew the telephone numbers of quite a few persons whose street address I did not know; I knew perfectly well how to get to the corner of Easy and Mean Sts., and that my friend lived in the ranch house with the juniper halfway down Mean going west. But could I give you the 100s part of the house number? Probably not. Did it matter? Only if I were mailing Christmas cards.