First, many thanks for such an incisively informative article.

To my mind, postmodernism works very well as a critique of ideology and theology (applied to human relations). To extend it to knowledge of material existence is to ignore the difference between such knowledge, achieved via the rational faculty and amenable to being evaluated using it, and beliefs as assertions of knowledge that are not products of the rational faculty and are not amenable to being evaluated using it. As human beings, scientists (at the apotheosis of seeking knowledge of material existence) cannot escape extraneous subjective influences and science as an institution can be subject to corruption and arrogance, but that does not obviate the necessary distinction we must make--for the sake of physical survival, much less flourishing--between knowledge of material existence and beliefs in experiencing material existence.