Thanks to those who have mentioned “Communion and Stewardship.” It’s a very interesting document, and as always (!) repays close reading. Parts of it have been quoted by edwest, et al., but strangely section 69 has been ignored:
"69. The current scientific debate about the mechanisms at work in evolution requires theological comment insofar as it sometimes implies a misunderstanding of the nature of divine causality. Many neo-Darwinian scientists, as well as some of their critics, have concluded that, if evolution is a radically contingent materialistic process driven by natural selection and random genetic variation, then there can be no place in it for divine providential causality. A growing body of scientific critics of neo-Darwinism point to evidence of design (e.g., biological structures that exhibit specified complexity) that, in their view, cannot be explained in terms of a purely contingent process and that neo-Darwinians have ignored or misinterpreted. The nub of this currently lively disagreement involves scientific observation and generalization concerning whether the available data support inferences of design or chance, and cannot be settled by theology. But it is important to note that, according to the Catholic understanding of divine causality, true contingency in the created order is not incompatible with a purposeful divine providence. Divine causality and created causality radically differ in kind and not only in degree. Thus, even the outcome of a truly contingent natural process can nonetheless fall within God’s providential plan for creation. "
Please note particularly: “…cannot be settled by theology.” and “…true contingency in the created order is not incompatible with a purposeful divine providence…even the outcome of a truly contingent natural process [i.e., evolution proceeding by the means of random mutations] can nonetheless fall within God’s providential plan for creation.”
“Divine causality and created causality radically differ in kind and not only in degree.” Exactly. The first belongs in religion/theology class; the second belongs in science class.