@SinaCutie
I believe it boils down to micro-expressions. Over millions of years humans can barely fathom the complexity of a tree. However an enormous amount of our brains have evolved to understand each other's faces. Subtle nuances emoted unconsciously; and understood universally regardless of language or geo location.
Email... This social media shit... We just slithered out from the primordial ooz. Hang in there... We're still evolving.