>>20995790>“You can’t judge a book by its cover”I think this refers more to what can be read about a person in their face, rather than by how good looking they are. Attractiveness tells you something about their health but reading the lines can help you to see what kind of person someone has been for the majority of their life, if they dwell in negative emotions and are potentially a threat, as well as the tells for when someone is lying or being honest.
https://myoutube.com/watch?v=4nAcRL-6ujk 