"Facial symmetry === beauty" is not that old of a scientific concept, relatively new if you compared to how long humanity has existed before someone started to

"Facial symmetry === beauty" is not that old of a scientific concept, relatively new if you compared to how long humanity has existed before someone started to really study it. And even so, too symmetrical faces will look just as un-human as a face that is too asymmetric. You need a face that is just the right amount of symmetrical in order for it to actually look good. I think you make it sounds simpler than what it is. It's also not a model that is trained to make as realistic people as possible, it's trained on a lot of different things, so obviously it won't excel at making realistic people. But one can easily imagine that some future models will be heavily trained on making realistic people rather than semi-realistic everything, like Stable Diffusion is trained to do today.