It's important that humans rely on language to communicate. If worn out he cannot unite a society. In a world where language skills using communicate: speaking listening reading writing etc.
It is crucial that humans need language to communicate. If not then I would not be integrated into society. Language skills of human communication is listening, speaking, reading, writing, etc..
Therefore, it is necessary for humans to live in language communication. If worn can combined into society. Language skills at the mankind use communication is listening, speaking, reading and writing.