Why do some websites need you to identify trucks to prove you’re human when machine learning can easily allow computers to do so?
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Best answer is that the captcha is actually monitoring other things to see if you act like a human and your answers are being used to teach image recognition systems. The images are actually not the first implementation of this idea. The inventor of the original captcha (where they gave you a squiggly word you had to type out) hated that he was wasting a lot of peoples time. So he updated the system to have 2 words. 1 the system knew and the other it didn’t. It used this information to learn text recognition. He also created Duolingo and used the same idea to translate webpages on the internet. He spoke about it in a Ted talk.
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