TheContextual Reality Framework 63 summarizes her/his feelings about the way things went at the classroom. If her/his mother wants the details, s/he may have to listen for a while, yet she perceives in an instant a significant message about her child, with implications for what kind of eveningthey are going to spend. Polanyi (1966) in his book ‘The Tacit Dimension’, brought out the importance of what people know but cannot externalize, what he called tacit knowledge. The hidden meanings contained in silence and blank intervals are manifest to our sensory perception. Communication relies on how well people provide and utilize the ‘empty space’ flexibly to form their own images to fill the spaces in sensory perception, and how well we accept the images of each other. Emptyspaceis an important componentof communication.It has a multiplicity of meanings and signifies both temporal and spatial principles, an interval of space and time. It can be the specific time that characterizes an interval of music or dance (Hosoe et al. 1991). It exists in the visual arts, architecture and the urban environment as well. For example, space itself is perceived entirely differently between cultures. In some cultures, especially Japanese culture, spaces are perceived, named, and even revered as the ‘MA’, or intervening interval. In Western culture, people more often perceive the objects but not the spaces between them (Hall 1959). They pay attention to the object arrangement. In contrast, in Japan, it is the arrangement of the spaces that is most salient (Hosoe et al. 1991). Many scientists, architects, space designers, communication designers and artists have paid attention to this phenomenon(Hosoe et al. 1991;Hall1969;Hara2009). The empty time and space opens and closes, swells and contracts. It gives us new ways of solution, creation and communication through constant attention to the use of space as though it gave abilities with no constraints on functional flexibility (Hosoeet al. 1991). Recentlyinteractiondesignershavepaidgreaterattentiontoambientinformation in everyday life. For example, people also communicate with the natural sources of ambient information to interpret how things are around them in everyday life. This communication is not linguistic conceptual exchange, but rather people intuitively interpreting what is of value for their purposes in their current environment and trying to become harmonious with it in everyday life activities. But, “this ability to convey ideas does not transfer well to humans interacting via computer” (Dey2001).Communicationandcollaborationthroughconventionalcomputer and telecommunication systems diminishes the qualities of interaction that produce a senseofdirectnessandrichness,becauseoftheirlimitedcapacitytoconveyareality with contexts shared between users (Hoshi and Waterworth 2008). Context is an important source of information in designing interactive systems, however not yet effectively utilized (Dey 2001;Salberetal.1999). TheContextualReality Framework Hall (1969) has described the phenomenon of “empty space” in communication using a different term. What he terms high-context communication is where “the communication or messages is one in which most of the information is either in