This, apparently, was a " control realignment" glimpsed in its natural habitat. Granny did not resist being realigned ... very soon, Tannen reasoned, she would be cruising alone at 30,000 feet, her relatives and their irksome metamessages far below. But not all of us can be beamed up from the bosom, or is it the stomach, of our family, wish for it as we may. Deborah Tannen, whose career has been devoted to understanding the ways in which human beings talk to each other, is here driven to frequent expressions of stark gratitude for the existence of e-mail. It seems that when it comes to families, the only good conversation is a dead conversation.