If his researches were correct, restrictions on space of land may have been the current law when "Shoku Nihongi" was compiled, and it increases the possibility that the stipulation was selected and put on record in exactly the same form.
もし、これが正しければ『続日本紀』編纂時には面積制限が現行法であり、その規定をそのまま採録した可能性が高くなる。