The document discusses the Gesture Theory of the origin of language. It proposes that early human ancestors used sign language for communication before developing vocal language. As civilization progressed and agriculture replaced hunting, vocal language became more useful and replaced sign language. When verbal language emerged, it created an "information super highway" that allowed for developments in religion, science, art and massive structures, leading to civilization. The document supports the Gesture Theory by explaining how developments in early human communication and activities provide a logical pathway from sign language to spoken language and the genesis of civilization.