National security decision makers face an uncertain world where the accelerated growth of knowledge has changed the character of technological advance and destabilized long-standing relations within and among the military services. Dr Mandeles separates the principles that guide decision making from the proverbs through a case study of decision making in the early post-World War II period.This study examines the impact of organization on the invention and development of jet propulsion-in the form of the B-52-and illustrates both the organizational conditions conducive to developing new operational concepts and the organizational innovations necessary to implement new technology.