Language does contribute. Without it we could not live in close proximity in such large numbers and culture would not evolve. Thanks to language there are billi

Language does contribute. Without it we could not live in close proximity in such large numbers and culture would not evolve. Thanks to language there are billions of us and we have conquered earth. Language made us, in a way. And of course when I say language I mean all the ideas we put in language, especially knowledge and methods. Not just sounds. Ideas don't travel very far absent language.