I once worked as a 3rd party in a large internet news site and got assigned a task to replace their current captcha with a partner's captcha system. This new system would play an ad and ask the user to type the name of the company in that ad.

In my first test I already noticed that the company name was available in a public variable on the site and showed that to my manager by opening the dev tools and passing the captcha test with just some commands.

His response: "no user is gonna go into that much effort just to avoid typing the company name".

If I'm a bot I have to tell you. It's in the internet constitution.

I'm pretty sure you have to have 2 bots and ask 1 bot is the other bot would lie about being a bot...... something like that.