Hideaki MATSUDAIRA and Goro HONMA emphasized that there are differences of practice produced upon existing various ways of appraisal such as the ryusui (running water) method, the way of Hattaku school, each school adapted different methods giving rise to the following differences.
流水法、八宅法などの多種多様な鑑定法の存在、各流派で採用する鑑定法や主張の相違などにより代表的なものに、以下のような相違が生じていると松平英明、本間五郎は、主張する。