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aaronbasssett | 5 years ago

So my script has a 1 in 3 chance of getting the CAPTCHA correct each time, with just a random guess?

A regular 6 character alphanumeric CAPTCHA has a 1 in 56,800,235,584 chance as a comparison…

discuss

order

cyphar|5 years ago

reCAPTCHA works in a similar way, they just ask you to determine which photos in a set of 9-12 contain a particular object (2^12 at best). If you just asked people to do the Reddit classification 7 or 8 times you'd get the same chance of random guesses passing. The trick is to rate limit attempts.

Personally my problem with this is that even with the basic categories reCAPTCHA asks for I find it difficult to figure out whether certain edge cases should count. I feel it could be more frustrating to have to guess whether someone on Reddit found a particular image interesting or not.