Synthesized answer
The provided passages do not explicitly list unanswered questions from "The Road Back to Nature" [1].
However, the passages do state that Masanobu Fukuoka recounts his impressions and observations from his travels [1]. He also describes developing a superhigh-yielding rice variety and his despair at seed politics hindering its use [1]. Additionally, he demonstrates the interdependence of nature, God, and man [1]. The passages do not offer any details regarding what, if any, questions remain unanswered after these discussions.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: The Road Back to Nature by Masanobu Fukuoka Description: In this collection of articles, lectures and essays, Fukuoka records for the first time his impressions and observations during his travels. He recounts also how he developed a superhigh-yielding variety of rice, and his incredulity and despair at the petty international seed politics that prevent the use of this miracle grain where it could do the most good. And he goes on to lucidly demonstrate the interdependence of nature, God and man. Categories: Nature Pages: 386 Snippet: In this collection of articles, lectures and…