the approach to the study is sometimes criticized to be analogical or evolutional . また研究姿勢に対しては類推的とか、進化主義的であるとかの批判もされる。
in addition , for okuma who estranged himself from his old friends since the end of edo period such as takato oki and taneomi soejima because of different way of living their life , the existence of kaiseigakari , which gave him evolutional proposals about reformation , was very reliable , and he admitted it later ( " okuma memoir " ). また、当時幕末以来の盟友であった同郷の大木喬任や副島種臣らと路線の違いから疎遠になりつつあった大隈にとって、他に先んじて改革の提言をもたらす改正掛の存在が頼もしい存在であったことを後に証言している（『大隈公昔日譚』）。
