Language is a creative system because it is a means of expressing an infinite number of thoughts and ideas and can react in an infinite number of ways to new situations (Coppock). Creativity is located within the individual but only in a fashion which can be understood by all. New words are created to keep up with changing times, such as the "dot.com" business phenomenon. Old sayings are such as "letting the cat out of the bag" are used across generations and understood by all, but few know of their origins. They are words or phrases created out of a time and place or event which are understood universally. Phrases like "surfing the web" and "e-commerce" arose with the spread of the internet. They were created at a time when the phenomenon occurred and quickly became used by many and recognized by all familiar with the computer. Language is a creative system because it can adapt to changes in society and technology over time.
It is true that there is really no such thing as a primitive language. Some languages such as Egyptian hieroglyphics may seem primitive today but they were very complex language systems. Just because a language does not resemble those mostly in use today does not make them "primitive" in the sense that they are just as complex and detailed as modern languages. Anyone who had to learn Latin in school can appreciate that. In relation to grammar, there is good and bad grammar within each individual language, defined by the usual form of sentence construction used by that language. Languages are learned in part by learning their grammar and its incorrect use can change the meaning of a sentence. If grammar is intended to "tell speakers how to form and interpret the words and sentences of their language" then it follows that there must be good and bad grammar within a language for sentences to be interpreted correctly.
Coppock, Elizabeth. "Creativity, generative grammar, and Erzeugung."
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