Twenty years ago it would have been difficult to convince people there would soon be portable computers, video tape machines, digital watches, microwave ovens, birth-control pills, supersonic passenger planes, and test-tube babies. There was little thought that the next two decades would bring heart and kidney transplants, moonwalks, spacecraft on Mars and Venus, discovery of DNA, satellite broadcasts, and a U.S. President who would resign from office. As the authors of this unusual book tell you, "In the light of the recent past there is no reason to disbelieve the advent of new miracles. Open your mind. Make way for tomorrow.