This paper is trying to express MAAI in architectural activity and its relation with computing. The notion of dynamic equilibrium is employed as a metaphoric expression of MAAI. Architectural activity is assumed to be composed of the creation of architectural space, utilization of it, and inquiry into it. Some types of dynamic equilibrium are introduced as they are associated with this activity. A model and a method, which associate subjective experience of architectural space and objective description of architectural space with each other, are proposed. The former is named as Two-Layered Model and the latter is named as Photo Diary. A real example of a photo diary is shown to express the subject of this paper.