The human face is, by far, one of the most complex features that has stumped the scientists in the field of developmental science. The recent debates on human face transplant makes it obvious that there is a lot more to the story. Just like fingerprints, no two human faces are alike. Even twins have striking dissimilarities. In fact, every human lip has a unique lip print!
Semantics aside, human faces are generally accidents of development. The faces, we consider as beautiful and pretty, are a result of assembly of primary features. So let us understand faces, human faces that's all around us.