Fully agree that the system propose the same challenge to many people and fully agree that my wrong answer is just diluted in a bunch of correct answers. That'

Fully agree that the system propose the same challenge to many people and fully agree that my wrong answer is just diluted in a bunch of correct answers. That's exactly why i was asking if other people were doing that. If i'm the only one..then yes, it's only useful for myself to fell less like a exploited brain, but if say 20% of the people start dumping random error on purpose...than the situation changes quite a lot...and potentially even the business model of shit-captcha might not work.