Slate Star Codex discusses postmodernism.
I think Scott actually does a good job explaining some of these concepts. The metaphor at the end is a bit iffy, but overall a nice example of the Principle of Charity.
At the end of the day, the best way to learn postmoderism is to read the postmodernists: Foucault, Deleuze, Derrida, even Merleau-Ponty and Nietzsche.
This afternoon I imported a ton of archives from previous years and a few different places. Some posts are about things I had forgotten I knew, but it’s so nice to re-read them, for example this old analysis of Christianity and Alcohol. My thinking hasn’t really changed much since 2011, to be perfectly honest. But don’t read the old essays, those are embarassing; I will keep them up for skin in the game of course.