“…Because the aforementioned methods are natural and easy to work with for value assessments by humans, we have applied them to various problems and confirmed their effectiveness (Shimizu et al 2005(Shimizu et al , 2006(Shimizu et al , 2010(Shimizu et al , 2012aShimizu and Tanaka 2003;Shimizu and Nomachi 2008). However, the case of MAOP is different if we consider the limit to the abilities of humans to perform assessment.…”