HackerTube / Video
Massive-scale online collaboration | Luis von Ahn
TED
Luis von Ahn, creator of CAPTCHA and reCAPTCHA, explains how small contributions from many people online can digitize books. He then introduces Duolingo as a way to translate the web while people learn languages.
HN commenters recommend it as the clearest account of human computation and games with a purpose, straight from the inventor.
4 Hacker News mentions · 2012–2022