Subject: Communication Origins.
The evolution of language is the evolution of communication. From touch which evolved about 800 million years ago to human words. Along the journey, communication included things like gestures, postures, and grunts.
Our journey from grunts to Shakespeare is a tale of the brain, the hyoid bone, and the addition of one “vocabulary word” at a time. Ancient humans experienced life and thanks to their remarkable brains, they expressed themselves increasingly well within a single lifetime. And all animals communicate, not as well as humans, but they do.