A chapter at the end of the book has a title which means 'quite a convincing theory why the Japanese government prohibits its citizens from going abroad and foreigners from entering the country, as well as why Japan severs diplomatic relations with counties worldwide.'
この中の、巻末の一章に「日本国において自国人の出国、外国人の入国を禁じ、又此国の世界諸国との交通を禁止するにきわめて当然なる理」という題名がある。