Language & WorldMental model
How a new language is born in a single generation.
Where people without a shared language must cooperate, a pidgin emerges: tiny vocabulary, little grammar. When children learn it as a mother tongue, it becomes a creole with full grammar. Tok Pisin in Papua New Guinea arose this way from English, German and Malay. It's now official; 130,000 native speakers, five to six million users. "Haus sik" is the hospital.
Useful: Languages aren't a fixed stock: they arise wherever necessity, contact and children come together.
Source: en.wikipedia.org