The Explanatory Power of Darwinism

W. L. Craigs cosmological argument is a great example of at least science-engaged philosophy (and perhaps theology too). He is engaging real science faithfully (as far as I know), but then reasoning about it with options and rules that go beyond science. That is a legitimate activity, as far as I can tell, as long as he is accurately representing science. As far as I know, he is to the best of his ability.