SRS: I've never encountered a postmodern resistance to science such as you suggest. I see and use pm as a way to explain why we don't all really read the same book even if we all pick up the same text and read it.

There seem to be several strands of post-modernism, as far as I can see. At least one strand of it seems to see "truth" as entirely socially constructed, and I've definitely met a few people who subscribe to this idea.