Abstract. In my recent work I argued that the religion and sciencedialogue is most successful when done locally and contextually. However, I also argued against theology's epistemic isolation in a pluralist, postmodern world, and for a postfoundationalist notion of human rationality that reveals the interdisciplinary, public nature of all theological reflection. I now want to explore the possibility that, when we look at what the prehistory of thehuman mind reveals about the biological roots of all human rationality, some forms of contemporary evolutionary epistemology may actually hold the key to understanding the kind of cognitive fluidity that enables true interdisciplinary reflection. Philosophically the religion and science dialogue benefits from this move when a postfoundationalist notion of rationality redescribes the dynamic interaction of our various disciplinary dialogues with one another as aform of transversal reasoning. Transversality in this sense justifies and urges an acknowledgment of multiple patterns of interpretation as one moves across the borders and boundaries of different disciplines.