Evolution of language
These notes are initially drawn from "The Origins of Language" by James R Hurford
The Prehistory of a Very Special Ape
- 7m years ago - the line leading to humans split off from that leading to bonobos and chimpanzees
- 4-2m years ago - Australopithecus is the first habitually bipedal ape. Bipedalism allowed us to separate the rhythm of breathing from that of walking and running and freed hands for meaningful gestures
- 2.5-1.5m years ago - Homo Habilis (clever man), was the first to make stone tools. This indicates patience, postponement of gratification, a mind capable of foresight into future needs, and constructive planning,
- 1.5m years ago - Homo Erectus, a tall robust ape made more complex tools and may have had a "protolanguage", a meaningful learned vocabulary but no grammar - just words strung together. They made the first migration of hominins out of Africa.
- 1m years ago - Home Erectus can use controlled fire, which allows cooking and reduction of teeth and gut size, which may have freed up resources for bigger brains. These are the first hunter-gatherers, living and working to hunt and forage cooperatively in small groups