Which of the following is Not true of grade-one thinking?

A、Ittakesgreatcouragetobeagrade-onethinker.;
B、Youcanhardlyfindagrade-onethinkerinreallife.;
C、Grade-onethinkingisbasedonalogicandcoherentvaluesystem.;
D、Grade-onethinkingtendtogotoofarinthegameofthinking