Consuming Knowledge: Studying Knowledge Use in Leisure and Work Activities 53 and tutorials in theseProceedingsgiveagoodunderstandingofthenatureanddirectionsofevolutionofCBSS problems van Oystaeyen and tutorials in theseProceedingsgiveagoodunderstandingofthenatureanddirectionsofevolutionofCBSS problems and solutions low expected lifespan I will suggest that knowledge content in these activities can be efficient for consumer objectives and also have important externalities through its effect on productivity at work and economic growth It takes as its starting point the contention that consumption is simultaneously an economic and social psychological process and that integration of content can contribute to explanation