Lucille Suchman (1987).
According to ethnomethodology:
- Practices sometimes may be explained merely by materials in the local environment of the culture.
- A difference in practices does not necessarily mean a difference in plan or internal representation.
- The structure of systems of practice are not essentially ordered by rules or norms that can be represented.
Ethnomethodology: An approach to social science deriving from Garfinkel (1957), that focuses on everyday cultural practices and activities in the social world. Ethnomethodology provides useful models for how plans are enacted and designed.