More useful is the notion of linguistic evolution. Sentences like the opening line of the Declaration of Independence simply do not occur in conversation. Even adult PirahГЈ 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. Abundant childhood exposure to a language with layered sentences practically guarantees their mastery. All evidence suggests that humans around the world are born with more or less the same brains. This canвЂ™t be pinned on biological evolution.

(Instead, they would say something like: BrotherвЂ™s house. According to linguist Dan Everett, PirahГЈ speakers avoid linguistic nesting of all kinds, even in structures such as JohnвЂ™s brotherвЂ™s house. Allegedly, the PirahГЈ language along the Maici River of Brazil lacks recursion altogether. 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. They prefer to string together simple clauses. ItвЂ™s what allows us to create-literally-an infinite variety of novel sentences out of a limited inventory of words.Д«ut that leads to a curious puzzle: Complex sentences are not ubiquitous among the worldвЂ™s languages. These scientists have argued that recursion, a technique that allows chunks of language such as sentences to be embedded inside each other (with no hard limit on the number of nestings) is a universal human ability, perhaps even the one uniquely human ability that supports language. To some linguists, Noam Chomsky among them, sentences like these illustrate an essential property of human language. Like an intricate equation, the sentence exudes a mathematical sophistication, turning its face toward infinitude. The main clause ( a decent respect to the opinions of mankind requires вЂ¦) hangs suspended above a 50-word subordinate clause that must first be unfurled. But how did it ever make its way into the world? At 71 words, it is composed of eight separate clauses, each anchored by its own verb, nested within one another in various arrangements. Declaration of Independence, opening sentenceДЄn iconic sentence, this. вЂњ] and ]], a decent respect to the opinions of mankind requires ]].вЂќ

Rise and fall