However, as research about the kokuga system was advanced by Yoshimi TODA and Susumu ISHII (each of them a historian) in the 1960s, it became impossible to consider that samurai originated in armed farmers.
しかしながら、1960年代に戸田芳実や石井進(歴史学者)らによる国衙機構に関する研究が進展すると、武士の起源武装農民説はもはや成立し得なくなった。