Uplift sells better than unpleasant facts, which is why, I suppose, William Langewiesche's new book, "Fly by Wire," has been published with an upbeat subtitle ("The Geese, the Glide, the Miracle on the Hudson") rather than with the more cynical one its publisher initially intended to use. That original subtitle, "The Truth About the Miracle on the Hudson," more accurately reflects this gripping book's contents.