“they challenge us to consider the very definition of what it is to be human”
Why?
“Why? “
It needs the whole paragraph to see his train of thought.
To me it looks as if he is being Philosophical.
“What is it that separates Humans from the rest of the Animal Kingdom...”
““they challenge us to consider the very definition of what it is to be human”
Why?”
Oh! I know!
You see? It’s the slight curve of the jaw. It’s elegance. It suggests that the individual it belonged to was an artist! The wear on the teeth obviously suggests much gnashing of teeth in angst driven contemplations of the meaning of life as the artist painted on the walls of its cave such masterpieces as Piss Bison.