Whatever the evolutionary basis of religion, the xenophobia it now generates is clearly maladaptive.
Lawrence M. KraussOccam's razor suggests that, if some event is physically plausible, we don't need recourse to more extraordinary claims for its being. Surely the requirement of an all-powerful deity who somehow exists outside of our universe, or multiverse, while at the same time governing what goes on inside it, is one such claim. It should thus be a claim of last, rather than first, resort.
Lawrence M. Krauss