The human tag on google wouldn't even be a new idea. Stack overflow already has a "not a robot" badge and there around 1.100 of us - don't trust the rest. On t

The human tag on google wouldn't even be a new idea. Stack overflow already has a "not a robot" badge and there around 1.100 of us - don't trust the rest. On the other hand our standard tests of verifying humans on the internet are more and more failing. Captchas are easier to solve by robots or have to accept that humans aren't perfect either, especially as a herd. Just yesterday I've seen a motorbike being accepted in a "mark the bicycle" challenge.