>>514766979
No, it is a requirement. You need to know for example why a complete sentence/ proposition requires a subject and a predicate to then know how to use propositions in an argument. Grammar, logic and rhetoric are not separate, but a unified system, interconnected subjects, and are the tools of thought. You can think of it as short, intermediate and long modes of conveying meaning in a text or speech. Grammar deals with the meaning in a short collection of words, such as a part of a sentence. Logic deals with the meaning in a longer collection of words, such as a sentence, or a few sentences. Rhetoric deals with the meaning in an even longer collection of words, such as a paragraph, a verse, a chapter etc. The grammar we are taught is a hollowed out version of what it really is, it goes much deeper, we are just taught the bare necessities.