Odd Lots Luis von Ahn Explains How Computers and Humans Learn From Each Other
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May 2, 2024 
Luis von Ahn, CEO and co-founder of Duolingo, sheds light on the fascinating interplay between humans and AI. He discusses the evolution of CAPTCHA technology and its role in training machines, creating a unique synergy between users and systems. The conversation also delves into how advanced AI is revolutionizing language learning on platforms like Duolingo, making the process more personalized and engaging. Von Ahn shares insights on the future of language education and the societal implications of AI in our daily lives.
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CAPTCHA Origin
- CAPTCHAs were initially designed to prevent bots from creating multiple free email accounts.
- Humans could easily solve distorted text puzzles, while computers struggled.
CAPTCHA Evolution
- Early CAPTCHAs used distorted text, leveraging humans' superior ability to decipher them.
- As computer vision improved, CAPTCHAs evolved to image recognition tasks like identifying traffic lights or bicycles.
CAPTCHA Future
- CAPTCHAs face limitations: tests must be quick, mobile-friendly, and easily gradable by computers.
- Luis von Ahn predicts visual CAPTCHAs might become obsolete in 5-10 years as computers' image recognition improves.