Bitbutter

While watching a friend using Face Maker I noticed that what I had taken to be decorative markings of the cheeks, she understood as eyes. And the shapes that I took to be eyes, she took to be unnecessary markings. I think there's been parallel selection for two separate sets of eyes. Both sets are very widespread among the current population of faces.

Here I've edited out the lower eyes, leaving only the top set:

And here's how it looks with only the lower set of eyes:

I think that voters tend to 'see' one pair more quickly than they see the other, and that once the first pair is recognised, there's a kind of blindness towards the other pair. For instance, before I was aware of the lower set I would have interpreted the previous image as missing eyes altogether.

Which set do you consider to be the real eyes?