Synthesized answer
The provided passages do not contain information about what questions remain unanswered in "The Structure of Scientific Revolutions" [1].
The passages only indicate that the book is by Thomas S. Kuhn and Dennis Holland and is available with a new index [1]. There is no content discussing the specific unanswered questions within the book's subject matter.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: The Structure of Scientific Revolutions by Thomas S. Kuhn, Dennis Holland Description: Thomas S. Kuhn's classic book is now available with a new index.