You can see the front of her face upside-down. It's good for one's perspective to consider how this must be a very exciting time for them and yet you can't tell when a crab is supposed to be attractive or even remember how to tell a male dungeness crab from a female dungeness crab. There's your perspective. You're a sort of ape that can stand on the outside of a particular planet.
Update: once again stumbled upon the Zhuangzi quotation that, according to our friend wikipedia, goes:
Men claim that Mao [Qiang] and Lady Li were beautiful, but if fish saw them they would dive to the bottom of the stream; if birds saw them they would fly away, and if deer saw them they would break into a run. Of these four, who knows how to fix the standard of beauty in the world?