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No, it doesn't help distinguish the two, because this check can be easily circumvented by adding a small, random delay.

To reiterate: the primary goal seems to be slowing down bots.




But does it slow the bot down in a meaningful way?

If you have one IP, there's a limit on captchas solved that you're going to blow through with or without the delay.

If you have a bunch of IPs, you can multithread the solving.




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