A natural order is the result of evolution—whether economic, linguistic, biological, or any other kind. For example, to argue that money is a natural order is to argue that money evolved, that nobody designed money—see Murray Rothbard on that here. That is, the order of money came about naturally. Nobody had to come up with the idea consciously.

If a scholar with a background in logic, mathematics, and linguistics—to give another example—thinks consciously about how logical thought and communication work and then designs a language for that purpose, then the scholar is working not with natural but artificial order, not with natural but artificial language. Anarchism in economic policy would keep the economy as laissez faire as possible, and by analogy, anarchism in linguistic policy would keep the language as laissez faire as possible. The scholar in the hypothetical, then, is going against the anarchic spirit. He’s interfering with the natural order.

Linguistics, being the study of natural language, is the study of the natural order of language. The most fundamental insight of linguistics, which also justifies the field, is that most people have order in their linguistic action, order worth studying, that’s evolved and undesigned, that’s natural and unconscious. Linguistics makes that implicit order explicit.