A language dies when its last native speaker dies. At that moment, a system of meaning — a vocabulary, a grammar, a way of dividing the world into nameable things — dissolves. It is not stored anywhere. It is not recoverable. It is gone.
There are approximately 7,000 languages spoken today. Linguists estimate that 50% to 90% will be extinct by the end of this century. The cause is not genocide but assimilation. Speakers of minority languages switch to majority languages — English, Mandarin, Spanish, Hindi — because they offer economic opportunity, social mobility, and access to the global conversation. The old language dissolves not because it is suppressed but because it is abandoned.
The dissolution of a language is the dissolution of a way of knowing. Different languages encode different distinctions. Some have words for colours that others do not distinguish. Some have grammatical categories — evidentiality, honorifics, aspect — that others lack. When a language dies, the distinctions it encoded die with it. The world becomes slightly less differentiated, slightly less articulate, slightly less known.
Efforts to preserve endangered languages — documentation, revitalization, immersion schools — can slow the dissolution but rarely reverse it. A language is not a set of words and rules that can be stored in an archive. It is a living practice, sustained by a community of speakers. When the community dissolves, the language dissolves with it.
In Fiction
China Mieville's Embassytown (2011) imagines a language so alien that it cannot be learned — only inhabited. The Hosts speak with two voices simultaneously; a single voice is meaningless to them. When a human learns to speak their language, the Hosts' society begins to dissolve. The novel is a thought experiment about the relationship between language and reality: when language changes, the world changes with it.