Wouldn't a better "CAPTCHA" be one that gives you words to desipher, but the "key" is actually something infered by the words.

Like the image cypher is "Red Green Blue"
and the key is "The words listed are all ______" (key = colors)

I mean, even if a bot decyphered the image, then it'd have to read the logic question and make the inference.

But it doesn't matter. There's companies now that have rooms full of people that do nothing but answer the CAPTCHA's for the bots, for a fee. Spam is big business on both sides of the sword.

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I'm like one of those idiot savants...well, except for the savant part.

"A long time ago, yet somehow in the future"