The document critiques Edward Sapir's definition of language by arguing that language is not purely human, as animals also communicate symbolically through sounds, smells, gestures, and more. It also analyzes whether language is instinctive or learned, presenting arguments on both sides by citing scholars like Chomsky, Darwin, and Sampson. Ultimately, the document concludes that Sapir was incorrect to say language is purely human, and that the nature vs nurture debate around language being instinctive or learned remains unresolved.