Synthesized answer
The provided passages do not contain information about what questions remain unanswered in the book "Conflict of Interest: A Theory of Divergent Goals with Applications to Politics" [1]. Therefore, I cannot answer your question.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Conflict of Interest by Robert M. Axelrod Categories: Law Pages: 240