An MIT Professor's pathbreaking book on building  "learning organizations" -- corporations that  overcome inherent obstacles to learning and  develop dynamic ways to pinpoint the threats that face  them and to recognize new opportunities. Not only  is the learning organization a new source of  competitive advantage, it also offers a marvelously  empowering approach to work, one which promises that,  as Archimedes put it, "with a lever long  enough... single-handed I can move the world."