With all those researchers, scammers, and ordinary humans solving billions of puzzles just at the threshold of what AI can do, at some point the machines were going to pass us by. But a decade later, after Google had bought the program from Carnegie Mellon researchers and was using it to digitize Google Books, texts had to be increasingly warped and obscured to stay ahead of improving optical character recognition programs - programs which, in a roundabout way, all those humans solving CAPTCHAs were helping to improve.Īll those awnings that may or may not be storefronts? They’re the endgame in humanity’s arms race with the machines.īecause CAPTCHA is such an elegant tool for training AI, any given test could only ever be temporary, something its inventors acknowledged at the outset. In the early 2000s, simple images of text were enough to stump most spambots. These tests are called CAPTCHA, an acronym for Completely Automated Public Turing test to tell Computers and Humans Apart, and they’ve reached this sort of inscrutability plateau before. There’s something uniquely dispiriting about being asked to identify a fire hydrant and struggling at it. Soon the traffic lights were buried in distant foliage, the crosswalks warped and half around a corner, the storefront signage blurry and in Korean. More and more, the simple, slightly too-cute button saying “I’m not a robot” was followed by demands to prove it - by selecting all the traffic lights, crosswalks, and storefronts in an image grid.
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At some point last year, Google’s constant requests to prove I’m human began to feel increasingly aggressive.