Duolingo Launches(bits.blogs.nytimes.com)
bits.blogs.nytimes.com
Duolingo Launches
http://bits.blogs.nytimes.com/2012/06/19/a-computer-scientist-banks-on-human-superiority-over-machines/
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http://bits.blogs.nytimes.com/2012/06/19/a-computer-scientist-banks-on-human-superiority-over-machines/
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