The article develops the author’s concept of relations between communication and isolation in the structure of the totality of technology and science, the ratio of rational to normative scientific, cognitive and technical structures. The focus is on the nature of ideals and norms of scientific and technical research, the types of scientific and technical rationality, their interdependence, and their role in cognition. The aim of the work is a comparative analysis of scientific and technical rationality based on the study of the foundations of science, technology and paradigms.