Earlier quoted context omitted.
I was forced to take a unit of postmodernism as part of my studies and came away no wiser as to what postmodernism actually is. There was a bunch of dense, impenetrable academic word games that seemed to be asserting that all truth is culturally relative. I don't find gravity or physics to be culturally relative.
If you're looking for a science-ish expression of postmodern insight, consider the line from statistician George Box: "All models are wrong, some models are useful." This isn't particularly shocking to anybody familiar with the history of science. Newton's model was wrong but useful, for example. All software is wrong but useful models of the world. (Well, some of it is wrong and useless, but you know what I mean.) P…
It seems to me that the postmodernism movement correctly called attention to social models being somewhat arbitrary and power-based but then (motivated by ideological agendas?) ran with the ball to say this means all cultures are equally worthy (where worthy means "should be promoted").
To use an exaggerated example, I cannot accept that eg an oppressive ultrareligious culture that practices infanticide, genital mutilation and wife beating is equally as worthy as eg a peace-and-love hippie commune. A philosophy devoid of value judgements is just nihilism wearing different pants.