There's no central control over the internet, networks have to work together. Dr Tim Griffin of the University of Cambridge & formerly Bell Labs explains whysome things can't be simplified.
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This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com