Don Shirley is a snobbish, polite, and mild-mannered concert pianist. While he does not appreciate Vallelonga's more exuberant and loud-mouthed affects at first, he comes to appreciate them in time as the two become closer. Indeed, Don is often put off by Vallelonga's attitude and finds him coarse and impolite
Yes, it is true that linguists do not know for certain how language was developed by early humans, but they're able to determine that it started somewhere in Africa, due to human migration patterns.
Its true
i promise hope i could help