Despite being under seclusionism, Japan had not closed the country completely, giving people the freedom to learn about the state of affairs of foreign countries as well as the latest studies, excluding Christianity through the Dutch language.
この点、日本は鎖国とはいえ完全に国を閉ざしたわけではなく、キリスト教以外はオランダ語を通じて自由に諸外国の情勢や最新の学問を研究できた。