Epistemological relativity, for an ELT professional, means that one accepts
that there are infinite ways of using language and that differences do not
automatically call for judgmental evaluation. (Leung, 2005: p. 138)
Leung, C. (2005). Convivial communication: Recontextualizing communicative competence. International Journal of Applied Linguistics, 15(2), 119-144.
Check other quotations here.