Some believe that, in order to avoid making the same mistake, the Tokugawa shogunate restored the old feudal system under which loyalty, family lineage and fudai daimyo (hereditary vassals) were more important than the ability to maintain the regime.
そのために、徳川幕府は、能力よりも忠誠心や家柄、譜代家臣を重視する旧来の封建体制を復活させ、体制維持に努めたとの意見もある。