a) Mate. Once again - the plugin counted ALL 23 real users and counted ZERO of the 2 spammers. Do you know whats the chance of coincidence there? Its is waaaaaaaaaaaaay less than 1 % chance.
b) Second: No I do not underestimate human spammers. I am saying that my questions are set up in that way that not even SMART HUMAN BEING HAVING 30 MINUTES OF TIME COULD SOLVE IT. Unless he is from that single country (and those two spammers were not). And EVEN if by some miracle they got the answers correct - why EXACTLY THOSE 2 were not counted? Micro chance for that big of coincidence.
But again even without the B part, only A part is no coincidence. If you do not believe that, simple task for you:
Take 25 balls. 23 green and 2 red. Have another person with you. You take one ball and ask him to guess what color it is. And make it 25 times with all the balls. what is the chance that other person will guess all balls correct? That is the chance of coincidence we are talking about... I seriously doubt it was coincidence as I said - its way less than 1% chance.. (Just a quick observation that 2 out of 25 is 8% chance meaning getting both right would be about 0.64% chance - not excatly as after you pick one you have different numbers of balls, but BALLPARK is 0.64% chance)
So you are still saying that sometimes plugin does not count users and you are relying on those 0.64% that it was coincidence and nothing to do with the fact that exactly those 2 were spammers.
And I am relying on 99.36% that it has to do with the fact that those 2 were spammers. I simply do not believe that coincidence which has +- 0.64% chance here
Sorry for my bad English