The prettiness could be an emergent effect of any feature compositing done by the algorithms. On average, the composite faces of a group of random individuals l

The prettiness could be an emergent effect of any feature compositing done by the algorithms. On average, the composite faces of a group of random individuals look more attractive than most of the individual members of the group. https://en.wikipedia.org/wiki/Averageness https://en.wikipedia.org/wiki/Averageness