11817epistemological theoriesPT0000-00-00 00:00:00BT10558philosophical theoriesPTNT11075coherentismPTNT11071empiricismPTNT11074foundationalismPTNT8374nominalismPTNT8378phenomenalismPTNT8384pragmatismPTNT11821rationalismPTNT8376relativismPTNT8375skepticismPTRT11816theory of knowledgePT