SZABOLCS MICHAEL de GYURKY was the Voyager Project Science Data Chief and a Technical Principal/Technical Manager at the Jet Propulsion Laboratory, retiring after twenty-five years. He was awarded the NASA Exceptional Achievement Medal for technological advancements of fundamental importance. He has long been fascinated by the concept of computer science as an abstraction of the human thought system and the role of the cognitive sciences in computer science. He is the author of The Cognitive Dynamics of Computer Science (Wiley).

MARK A. TARBELL is a Visiting Scientist at the California Institute of Technology's Visual and Autonomous Exploration Systems Research Laboratory. For the last twenty-five years, he has immersed himself in large-scale computer science, aerospace, and biomedical project development for NASA, Caltech, and JPL. He is the recipient of the NASA Certificate of Recognition for Creative Development of Technical Innovation, co-recipient of the R&D 100 Award in biomedicine, and holds patents in the fields of aerospace and biomedical technologies.