Amazing analysis. I always thought that progression of man (homo-sapien and his ancestors) developed their abilities progressively and language formed a key factor in their evolution to a species using advanced tools and weapons. Thanks for sharing. Was intriguing.

While I am here, may I make a request - When you have time, please do take a look at my blog where I tried my hand at writing - a chain of thoughts on solitude - inspired by my wildlife picture instead of just putting the picture. Thanks
https://steemit.com/life/@vm2904/solitude-not-lonliness-a-boon-not-a-bane

Also - if you dont mind please participate in this contest for supporting minnows - https://steemit.com/life/@vm2904/caption-contest-1-wildlife-awareness-please-participate-and-support