First-Person Dialogic?

Philip Roth's Operation Shylock is an interesting accomplishment. I really want to call it a polyphonic novel. It is dialogic in that many character-ideas get voiced, and there is often a broad judgment of the character-ideas, but the ideas are not filtered to the end dialectically. They are mostly left standing for us to examine. And yet, it is written in the FIRST PERSON. Further yet, the first-person narrator is THE WRITER PHILIP ROTH. An intriguing example of where innovations of the novel can be taken.