I'm of the ilk that grammar should for the most part be prescriptive while dictionaries should be descriptive. And this is actually not a grammatical problem bu

I'm of the ilk that grammar should for the most part be prescriptive while dictionaries should be descriptive. And this is actually not a grammatical problem but a semantic one. "The book is composed of many pages" "The book is comprised of many pages" If one of these is incorrect, it can only be because of the meaning of the adjective phrase "comprised of". The actual structure of the sentence is fine. In my opinion, I think either one is totally acceptable, as long as the meaning is clear.