The Rise and Fall of the English Sentence
But that leads to a curious puzzle: Complex sentences are not ubiquitous among the world’s languages. Many languages have little use for them. They prefer to string together simple clauses. They may even lack certain words such as relative pronouns that and which or connectors like if, despite, and although—these words make it possible to link clauses together into larger sentences. Allegedly, the Pirahã language along the Maici River of Brazil lacks recursion altogether. According to linguist Dan Everett, Pirahã speakers avoid linguistic nesting of all kinds, even in structures such as John’s brother’s house. (Instead, they would say something like: Brother’s house. John has a brother. It is the same one.)
This can’t be pinned on biological evolution. All evidence suggests that humans around the world are born with more or less the same brains. Abundant childhood exposure to a language with layered sentences practically guarantees their mastery. Even adult Pirahã speakers, who have remained unusually isolated from European languages, pick up the trick of complex syntax, provided that they spend enough time interacting with speakers of Brazilian Portuguese, a language that offers an adequate diet of embedded structures.
Sentences like the opening line of the Declaration of Independence simply do not occur in conversation.
