As Health Minister Carrillo prioritized the development of preventive medicine, the hospitals' running organization, and concepts such as regulative centralization and executive decentralization ("centralización normativa y descentralización ejecutiva"). He did so without mandating decentralization with merely economic goals imposed by the markets. Corresponding by letter with Norbert Wiener, the creator of cybernetics, Carrillo applied it to the art of government with what he referred to as "cybernology" ("cibernología"), creating an "Instituto de Cibernología" (in effect, strategic planning) in 1951. He also partnered with Argentine Railways to establish a "Health Train" service equipped with mobile clinics to reach some of the most remote and impoverished regions in the country. The service was discontinued after his resignation.