It is difficult to overstate the importance of personal consumption both to individual consumers and to the economy. While consumer&, are recognized as valuing market goods and services for the activities they can construct from them in the frameworks of several disciplines, consequences of the characteristics of goods and services they use in these activities have not been well studied. In the discourse to follow, 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....