Randall W. Jensen, Ph.D., started his career working to improve software productivity at Hughes Aircraft Company’s Space and Communications Group where he developed a pioneering computer model for estimating cost and schedule for any large project, measuring organization capability and quantitatively predicting the productivity impact of management decisions. In 1979, Jensen and Charles Tonies illuminated key software productivity attributes in their book, Software Engineering. Throughout his career Jensen continues his research on productivity leading to his improved computer-based estimating model, which is still used today.