In 1972, in Chile, the German designer Gui Bonsiepe was in charge of the Industrial Design Department of Technological Institute of the National Corporation for the Promotion of Production INTEC Corfo, during the government of socialist President Salvador Allende in Chile. In this article from the INTEC magazine n.2, published this time for the first time in English, Bonsiepe develops a theoretical formulation, applied to the field of design, through which he proposes a concept that will be fundamental in the field of interactive development, both analog and digital: the Interface. Thus, it also includes concepts of cybernetics such as variability and predictive study of behavior in the field of projecting disciplines. Bonsiepe is an exceptional representative during the formation of the iconic Hochschule für Gestaltung in Ulm (HfG Ulm). And among other elements, one very outstanding was his time as a student of Professor Max Bense and Horst Rittel, who would have introduced the concepts of first-order Cybernetics in the teaching of communication, and the design of information, in a pioneering way (Leopold, 2014). The challenge posed in 1972, in Chile, focused on the possibility of calculating elements of criticism of political economy, in the field of knowledge generated by sensitive experiences, "calculating the use value" of the field of esthetics. As a renowned disciple of Max Bense and Tomas Maldonado, Bonsiepe represents the meeting of two Cybernetic traditions, collaborating with the emblematic Cybersyn Corfo project (Chile: 1970–1973), in which the formulation of interaction mechanisms was strategic in combination with Stafford Beer's approaches to a second-order Cybernetics, according to the Viable System Model (VSM), for a project of decentralized state production, and transmission of information in real time.
