https://www.google.com/search?tbm=isch&q=lug+nut
You're telling me it only works one way, from text to images, and doesn't work the other way? But Google already lets you upload an image to search...
http://www.google.com/imghp
In any case, Google can simply say "I think it's a lug nut. Do you agree Y/N?" And in effect, play 20 questions with its entire userbase. In very short order it would be capable of identifying anything.
https://www.google.com/search?tbm=isch&q=lug+nut
You're telling me it only works one way, from text to images, and doesn't work the other way? But Google already lets you upload an image to search...
http://www.google.com/imghp
In any case, Google can simply say "I think it's a lug nut. Do you agree Y/N?" And in effect, play 20 questions with its entire userbase. In very short order it would be capable of identifying anything.