16. A billion people in advanced economies may have between two billion and six billion spare hours among them, every day . In order to harness these billions of hours, it would take the whole workforce of almost 340,000 workers employed by the entire motion picture and recording industries in the United States put together, assuming each worker worked forty-hour weeks without taking a single vacation, for between three and eight and a half years ! Benkler, Y. -- Some Basic Economics of Information Production and Innovation in The Wealth of Networks.