CAPTCHA

in relation to the Cryptonomicon, and Alan Turing specifically, i have noticed a large increase in the number of websites requiring a CAPTCHA form. CAPTCHA stands for Completely Automoted Public Turing test to tell Computers and Humans Apart. it is those squiggly lettered nonsense words you must enter to verify your participation in something online. here's some more info from wikipedia: http://en.wikipedia.org/wiki/Captcha

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