Man's (and woman's) ability to solve problems. via [Marquee de Sells: Chris's insight outlet]
The problem: CAPTCHAs (those visual problems used to defeat registration 'bots). The CACM reports that defeat requires advancing the state-of-the-art of Artificial Intelligence.
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p dir="ltr"> The solution: "Solve this CAPTCHA for us and we'll show you some porn."