To All God's Children,
The principle of averageness states that when it comes to people the more faces that are averaged together, the more attractive that face becomes. To explain, a computer can average together a certain number of people’s faces like a melting pot merging all their features to make one face. The composite is perceived as more attractive with each face that’s added. Is it possible that people with denser genetic pools are seen as more attractive for that very reason? If you want to widen the gene pool it would make sense to be more attracted greater variety. Or according to koinophilia, an average would be more prevalent anyway because that’s what makes it the average or typical look and thus more likely to have common or much needed features for survival or fitness.