And how many different pictures of cats are there? If you use so many pictures to train your network, the chances are that almost every picture out there will

And how many different pictures of cats are there? If you use so many pictures to train your network, the chances are that almost every picture out there will already be in the so-called training set - not the same exact picture, but a very similar one. Then the whole "AI" is reduced to doing some fuzzy matching on a massive database of pictures.