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Duncan Watts (http://www.amazon.com/Six-Degrees-Science-Connected-Age/dp/0393041425 http://www.amazon.com/Six-Degrees-Science-Connected-Age/dp/0...) wrote about

by britta 16y ago

Duncan Watts (http://www.amazon.com/Six-Degrees-Science-Connected-Age/dp/0393041425 http://www.amazon.com/Six-Degrees-Science-Connected-Age/dp/0...) wrote about this kind of thing in a clear and interesting way.