David L. Parnas is one of the grandmasters of software engineering. His academic research and industrial collaborations have exerted far-reaching influence on software design and development. His groundbreaking writings capture the essence of the innovations, controversies, challenges, and solutions of the software industry. Together, they constitute the foundation for modern software theory and practice.
David Lorge Parnas (born February 10, 1941) is a Canadian early pioneer of software engineering, who developed the concept of information hiding in modular programming, which is an important element of object-oriented programming today. He is also noted for his advocacy of precise documentation.