you may not know what face it is, but you do know that it is a face right? it's like saying you know someone is in front of you if he were standing in up, in your clear view, but the moment he's lying on a couch in centre of your vision you can't tell with certainty if the thing on the couch is a human being?
I could tell, but I'm under impression that my 4 months old kid still has problems with that, or at least had when she was 2 months old.
I think this is closer to the performance we should expect of current neural models - a few months old child, not an adult. NNs may be good at doing stuff similar to what some of our sight apparatus does, but they're missing additional layers of "higher-level" processing humans employ. That, and a whole lot of training data.
