Any of these is the result of dedicated efforts of the compiler, O no Yasumaro who was struggled to accurately and efficiently describe the content (refer to the preface).
いずれも、いかに正確にかつ効率よく記述するかで悩んでいた（序文参照）編者・太安万侶の涙ぐましいまでの苦心の跡である。