This is a good example of crowd sourcing - the doc was started by George's brother, Alec - who is skyping in Thursday!
Very interesting indeed, thanks for the link Blair. I was introduced to Google Docs last year in Mike's internet course, and have found the tool extremely useful many times since. I like how interactive it is, making "group work" possible from anywhere, without physically being with your group. I added a comment to the document, which made me feel sort of important and contributory.