Synthesized answer
The provided passages do not explicitly state what questions remain unanswered.
However, the passages do indicate that Christine Korsgaard identifies four accounts of the source of normativity: voluntarism, realism, reflective endorsement, and the appeal to autonomy [Passage 2]. She traces their history and compares their early and contemporary versions, with Kant's theory of normativity springing from our own autonomy emerging as a synthesis of the other three [Passage 2]. The discussion is followed by commentary and a reply by Korsgaard [Passage 1].
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
rom our own autonomy emerges as a synthesis of the other three, and Korsgaard concludes with her own version of the Kantian account. Her discussion is followed by commentary from G. A. Cohen, Raymond Geuss, Thomas Nagel, and Bernard Williams, and a reply by Korsgaard. Categories: Philosophy Pages: 294 Snippet: Her discussion is followed by commentary from G. A. Cohen, Raymond Geuss, Thomas Nagel, and Bernard Williams, and a reply by Korsgaard.
Title: The sources of normativity by Christine M. Korsgaard Description: Ethical concepts are, or purport to be, normative. But where does their authority over us come from? Korsgaard identifies 4 accounts of the source of normativity, traces their history and compares their early and contemporary versions. --- Google Books --- Title: The Sources of Normativity by Christine M. Korsgaard Description: Ethical concepts are, or purport to be, normative. They make claims on us: they command, oblige, recommend, or guide. Or at least when we invoke them, we make claims on one another; but where…