Why can’t bots solve captchas?
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They can. Depending on the type of captcha depends how easy it is for a computer to solve. Ones involving character recognition computers have become reasonably good at.
The current style used by Google which is selecting all pictures of a certain type is substantially easier for humans than computers.
Humans can fairly easily tell the difference between a set of stairs and a zebra crossing, or a train and a bus. That’s quite a hard task for a computer. Humans are good at using contextual information. I.e. There are train tracks thus the big thing sitting on it is a train 🚆. Buses are not too dissimilar visually, just compare these emotes 🚍
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