If you want to produce a cheap AI for solving a particular class of problems, tu... | Hacker News

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		v21 on Nov 10, 2010 \| parent \| context \| favorite \| on: TextCAPTCHA: 180 million simple logic questions If you want to produce a cheap AI for solving a particular class of problems, turn the class of problems into a CAPTCHA...

Devilboy on Nov 10, 2010 [–]

I bet you can make this work for image tagging

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