Abstract
The concept of "Close-and-Open" is the living system condition in which the system operates self-referentially and autonomously in the realities that can be experienced by the system subjectively as accidental failures only after they happened. This paper explains that both heteronomy, or material openness, and autonomy, or informational closure, are the living system condition, referring to Neocybernetics, especially HACS model of Toru Nishigaki. Systems in the information technological environment tend to pursue either openness or closure, although both of them are the living system condition. This paper insists that it is important for such systems to embrace their inherent "Close-and-Open". This paper also provides an interpretation of media art as an art of mediation between closure and openness to compose the "Close-and-Open" systems, especially in the method of Masahiro Miwa's "Reverse-Simulation Music".
