> I guess that would work, except that it would require people to pretty much always enter at least two different captcha interpretations, the first being a new image that always rejects you, and the next being one that could potentially validate you and in any case help confirm the correctness of an interpretation supplied by an earlier user.
>
> Huh.

I would assume that, since what I thought I saw was two images presented simultaneously, that one would be for validation purposes--it's answer is already known--and one would be for text conversion purposes--it's identity still needs to be determined. And, I would also assume the bot would not know which one is which and so would not know which one is more important to get correct. Not that the last part of that matters, but my mind was just wandering.

Mich-mmm...captcha-ael