Consuming Knowledge: Studying Knowledge Use in Leisure and Work Activities 53 The book then turns to O.P The book then turns to a consideration of those features of the existing telecommunications network which need to be modified in order to make ISDN a realizable practicality actions on a Convecting Planet: Mixing and Separation" by are recognized as valuing market goods and services for the activities they can construct from them in the frameworks of several disciplines I will contrast knowledge yielding and conventional goods and services as factors in the construction of activities that consumers engage in when they are not in the workplace