How does Noam Chomsky explain children’s rapid acquisition of language?

Noam Chomsky explains the rapid acquisition of language in children by arguing that humans possess an innate faculty for language, rather than learning it solely through environmental conditioning.12

Chomsky posits that children are born with a biological predisposition to acquire language, which he links to the theory of universal grammar. This theory suggests that the human brain contains predetermined grammatical categories and structures that are activated by exposure to linguistic input.31

A central pillar of his argument is the "poverty of the stimulus," which observes that children acquire complex linguistic competence with remarkable speed despite receiving "incomplete and even incorrect data" and a lack of systematic instruction. Chomsky refers to the challenge of explaining how children achieve this mastery as "Plato’s problem," suggesting that because children know far more than they could have been taught, their ability must stem from an internal system of concept generation and combination that develops in accordance with biological and physical maturation. This perspective shifted the field away from behaviourist models, which previously viewed language acquisition as a process of mere imitation and reinforcement.421