"Technology." . . "Computer programming." . . . . "Videorecording"@en . "Videorecording" . . . "Luis von Ahn"@en . "Luis von Ahn" . . . . . . "Educational films"@en . "Educational films" . . . "In this TEDTalk, computer scientist Luis von Ahn explains that every time we retype squiggly CAPTCHA letters for online verifications, we are simultaneously helping to digitize old books. The success of his CAPTCHA program led von Ahn to develop more ways to utilize ordinary online activity, or \"crowdsource\" - resulting in the language-learning site Duolingo, which aims to help users master a new tongue while accurately translating the content of other Web sites." . "In this TEDTalk, computer scientist Luis von Ahn explains that every time we retype squiggly CAPTCHA letters for online verifications, we are simultaneously helping to digitize old books. The success of his CAPTCHA program led von Ahn to develop more ways to utilize ordinary online activity, or \"crowdsource\" - resulting in the language-learning site Duolingo, which aims to help users master a new tongue while accurately translating the content of other Web sites."@en . . . "Internet videos"@en . "Internet videos" . . . . . . . . "Massive-Scale Online Collaboration"@en . "Massive-Scale Online Collaboration" . . . . . . . . "TEDTalks Luis von Ahn - Massive-Scale Online Collaboration" . "TEDTalks Luis von Ahn - Massive-Scale Online Collaboration"@en . . . . "TED Talks"@en . "TED Talks" . . . . . . "After re-purposing CAPTCHA so each human-typed response helps digitize books, Luis von Ahn wondered how else to use small contributions by many on the Internet for greater good. In this TEDTalk, he shares how his ambitious new project, Duolingo, will help millions learn a new language while translating the Web quickly and accurately - all for free. Luis von Ahn builds systems that combine humans and computers to solve large-scale problems that neither can solve alone." . "After re-purposing CAPTCHA so each human-typed response helps digitize books, Luis von Ahn wondered how else to use small contributions by many on the Internet for greater good. In this TEDTalk, he shares how his ambitious new project, Duolingo, will help millions learn a new language while translating the Web quickly and accurately - all for free. Luis von Ahn builds systems that combine humans and computers to solve large-scale problems that neither can solve alone."@en . "TEDTalks Luis von Ahn, Massive-Scale Online Collaboration"@en . "TEDTalks Luis von Ahn, Massive-Scale Online Collaboration" . . . . . "Films for the Humanities & Sciences (Firm)" . . "CAPTCHA (Challenge-response test)" . . "TED Conferences LLC." . . "Technology and civilization." . . . . "Computer software." . . "Technology Social aspects." . . "Films Media Group." . . "Science." . .