seems it stems from a study called "How Much Information? 2009 Report on American Consumers" from the management summary : "In 2008, Americans consumed info

seems it stems from a study called "How Much Information? 2009 Report on American Consumers" from the management summary : "In 2008, Americans consumed information for about 1.3 trillion hours, an average of almost 12 hours per day. Consumption totaled 3.6 zettabytes and 10,845 trillion words, corresponding to 100,500 words and 34 gigabytes for an average person on an average day. (...) We defined “information” as flows of data delivered to people and we measured the bytes, words, and hours of consumer information. Video sources (moving pictures) dominate bytes of information, with 1.3 zettabytes from television and approximately 2 zettabytes of computer games." I found a copy here : http://group47.com/HMI_2009_ConsumerReport_Dec9_2009.pdf http://group47.com/HMI_2009_ConsumerReport_Dec9_2009.pdf