As so many do, this post started as a reply to another post elsenet where a writer was quoted about something like the impossibility of an ethics of narrative or what is commonly thought of as postmodernity’s most glaring problem: that of the relativism of its moral arguments, when it has any.
Usually when I read the phrase “post-modern ‘anything goes'” it is being written by someone in a field in which postmodern theory does not figure very large–often a science-y type or sometimes a social science-y type; I suspect that in the social sciences postmodernism does get airplay but it is something like an AM radio broadcast of what needs to be auditioned live and in person.
Yes, the author is a fiction in most postmodern theory, and yes, it is difficult to make any claims to objective reality from within a postmodern critique of metaphysics. We do live in a discursively constituted, culturally mediated environment as postmodern Westerners and narrative does tend to be where one looks when one is trying to discern the grounds of classical Western metaphysics.
But “narrative” does not equal “not real” or “not binding” or even “voluntary” or “at somebody’s whim.”