Stanley Fish argues that secular discourse isn't possible while reviewing Steven D. Smith's The Disenchantment of Secular Discourse:
While secular discourse, in the form of statistical analyses, controlled experiments and rational decision-trees, can yield banks of data that can then be subdivided and refined in more ways than we can count, it cannot tell us what that data means or what to do with it. No matter how much information you pile up and how sophisticated are the analytical operations you perform, you will never get one millimeter closer to the moment when you can move from the piled-up information to some lesson or imperative it points to; for it doesn’t point anywhere; it just sits there, inert and empty.
Once the world is no longer assumed to be informed by some presiding meaning or spirit (associated either with a theology or an undoubted philosophical first principle) and is instead thought of as being “composed of atomic particles randomly colliding and . . . sometimes evolving into more and more complicated systems and entities including ourselves” there is no way, says Smith, to look at it and answer normative questions, questions like “what are we supposed to do?” and “at the behest of who or what are we to do it?”