If a writer of prose knows enough of what he is writing about he may omit things that he knows and the reader if the writer is writing truly enough?

The writer can omit certain details if they have a strong understanding of the subject, allowing the reader to fill in the gaps with their own imagination. This can create a more engaging and immersive reading experience by encouraging active participation from the reader. By writing authentically, the writer can establish trust with the reader and evoke a sense of realism in the narrative.