Well since Gumby is on a shit posting spree, I figured I would post one thing. Use this as an example of how to pose a question/comment etc in your own words and thoughts...
Every experiment that is on record from when people were trying to find the "true" language of humanity (multiple children raised by a mute or people forbidden to speak), to horrible cases of abuse, and many other situations... There hasn't been a single case where complex communication skills were formed (well very basic to normalized humanity)
Perhaps the first humans were instructed on how to communicate? Or possibly they were the only ones gifted with the info in order to pass it down?