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One of the most ridiculously unserious ideas I've ever come across is that the "invention" of language is something that can be pinned to a specific point in time, in the very recent past (50k-70k years ago), and that it is what makes Homo Sapiens oh-so-special & superior
Language, culture, complex social structures, and advanced technology gradually co-evolved over *hundreds of thousands of years* (700+k), very slowly. And they were not exclusive to Homo Sapiens. Neanderthals, Denisovans (who diverged from Homo Sapiens 700k years ago) had them.
These furless apes were thriving in harsh environments where you wouldn't last 2 days -- how primitive do you think they were? We have archeological evidence that pre-humans were hunting big game in groups using wooden & stone weapons at least 400k yrs agohttps://en.wikipedia.org/wiki/Sch%C3%B6ningen_spears …
I’ve read some Jared Diamond but havn’t found much about langage evolution. What are your sources ?
The question struggling me then is: what are the common bases to homo sapiens, Neanderthals and Denisovans which allow them to develop language? Why other primates do not evolved such a thing?
I figure it has its roots in a very old ancestor shared with birds, so basically, could be millions of years old. Language has been a part of life for a very long time. And dang it, I’m not even original. Berwick and Chomsky wrote a book about this. 
Also we can argue DNA is a language too. It’s just a written one. Life is language.
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