Episteme
"Episteme" is a philosophical term derived from the Ancient Greek word ἐπιστήμη "epistēmē", which can refer to knowledge, science or understanding, and which comes from the verb , meaning "to know, to understand, or to be acquainted with".
Epistemic community
Some theorists argue that an epistemic community may consist of those who accept one version of a story, or one version of validating a story. Michel Foucault referred more elaborately to mathesis as a rigorous episteme suitable for enabling cohesion of a discourse and thus uniting a community of its followers. In philosophy of science and systems science the process of forming a self-maintaining epistemic community is sometimes called a mindset. In politics, a tendency or faction is usually described in very similar terms.