I'm reading postmodern theory, and it seems to be all allusion and beating around the bush. I'm having a hard time getting at what the foundational ideas are. One thing I have heard is that postmodernism sees science as on 'way of knowing', that is no better or worse than other 'ways of knowing'. I've heard some very educated people say that this is a central tenet of postmodernism, and others say that postmodernism never makes any such claim. How can I know either way? It also occurs to me to ask, 'way of knowing what'? It's one thing to know being fat increases health risks, it's a completely different thing to know murder is bad. If all postmodernism is trying to claim is that there are different arenas of knowledge, with different ways of knowing in each, then isn't that just restating Kant who drew the distinction between 'what is', 'what ought', and 'what's beautiful'?
Any help is appreciated, sources are appreciated the most. Thanks!
Edit in response to suggestions for context and additional information:
Cynical Theories by Helen Pluckrose and James Lindsay
A Primer on Postmodernism by Stanley J. Grenz
Philosophy and Theology by John D. Caputo
Next, I'm considering "Feminism is for everybody" by bell hooks. I'm trying to understand the Social Justice Movement, but it seems hard to pin down what anyone believes. Reading the books, it seems like they are saying science is just one 'way of knowing' among many, no better and now worse. Speaking with a self-declared postmodernist, however, she claims no serious postmodern scholar ever made that claim. We went through the book and she showed me how, cast in a certain light, maybe I misinterpreted the books.