Ethnomethodology is a micro-sociology formulated as a kind of phenomenological sociology by Harold Garfinkel on the West Coast of the US. The word Ethnomethodology was created to mean "how various peoples do things. "Garfinkei's suggested definition is "ways of doing things employed unconsciously by people on a daily basis&sbquo" particularly in regards to cognition and behavior. Ethnomethodology used the term "ethnomethodological indifference" to describe the lack of concern on the part of the average person for such questions as "What is reality?" What is light?" What is important?" Its subject of inquiry comprises the human beings who as members of society realize realistic activities and social order. To accomplish this&sbquo ethnomethodology employs a method called documentation in which a detailed record is made of the shared ways of doing things that everyone tacitly agrees upon. If we take the sociological viewpoint for design&sbquo proof of ethnomethodological indifference will become an area of study that has a role in future design research to verify the significance of the fact people are indifferent to the meaning of the designed object and the act of the designing. This is because it can be used as a survey to clarify and make concrete through documentational interpretation−the contextual situation that becomes manifest in the everyday operations of daily life (which has the most part occur tacitly). It is possible to explain&sbquo as a behavioral pattern&sbquo how people are cognizant of design and how the results of that design are in corporate into daily living&sbquo and confirm the fact of design through the comprehensive acknowledgment of the overall situation. However&sbquo design and this area of study have not yet found a point of contact.