
teaching(s) -- think!
... / theme(s) / create / common(s) / art(s) / _ / .
think --> exist --> identity --> review
hence by modens tollens
not review --> not identity ---> not exist --> not think --> not grading[QED]
think --> exist --> identity --> review
hence by modens tollens
not review --> not identity ---> not exist --> not think --> not grading[QED]