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 2 years 5 months 1 week ago • 1,441 views • 16:40TED talks
Created: 1 decade 6 years 9 months ago
Updated: 6 years 11 months ago
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Updated: 6 years 11 months ago
Views: 18,547
TED talks.
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