I'd like to enter a plea of non placet
for my definition of postmodern: when a phenomenon's meta completely consumes it. Art imitating itself; the postmodern simulacrum. Is semiotics language or is language semiotics? Art totally penetrating reality.
These are all the same thing, and are my working definition of the postmodern. But by sheer etymology, why should this be right? Rather, I'd call these phenomena hyperreality
. This word works perfectly well, because it's not technical, like meta-reality,
nor loaded like postmodern.
I can't exactly make out the road ahead, but I think the postmodern will be the human reaction to hyperreality, accompanied by Hegelian discourse on what constitutes reality, just to be safe.
Now I seriously can't foresee the philosophy of postmodernism. But I know it must be a collection of perspectives which may or may not entail a moral dictum, a change in the style of speech, or a newfound rejection of modernist art.