the first bit just covers how they went from captcha to recaptcha, and why, which most here already know. the second part uses those ideas to explain their new website - duolingo.com
posted by my15minutes 1 decade 3 years 2 weeks ago • 1,441 views • 16:40TED talks
Created: 1 decade 7 years 4 months ago
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Updated: 7 years 6 months 1 week ago
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TED talks.
The best speakers with the most amazing topics. What do you want more.