How much do you really need to say to put a sentence together?
Just as fish presumably don’t know they’re wet, many English speakers don’t know that the way their language works is just one of endless ways it could have come out. It’s easy to think that what one’s native language puts words to, and how, reflects the fundamentals of reality.
But languages are strikingly different in the level of detail they require a speaker to provide in order to put a sentence together. In English, for example, here’s a simple sentence that comes to my mind for rather specific reasons related to having small children: “The father said ‘Come here!’” This statement specifies that there is a father, that he conducted the action of speaking in the past, and that he indicated the child should approach him at the location “here.” What else would a language need to do?