Synthesized answer
The provided passages do not contain information about what questions remain unanswered in "The Natural Way of Farming."
The passages only offer a description of the book, stating it is about "An approach to farming the natural way; the theory and practice of working with nature, and living better for it" [1]. They also mention the book's title, author, categories, and page count [1]. There is no content that addresses unresolved questions or areas for further inquiry 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 Natural Way of Farming by Masanobu Fukuoka Description: An approach to farming the natural way; the theory and practice of working with nature, and living better for it. Categories: Gardening Pages: 302 Snippet: An approach to farming the natural way; the theory and practice of working with nature, and living better for it.