Universal Darwinism is the belief that Darwin’s theory can be applied fruitfully to many scientific disciplines, not just to biology.
Natural selection is not, after all, the one natural process in the universe that can make nature run backward.
Aristotelian teleology is, as Joseph Carter points out, manifested by order in nature. More precisely, teleology is consistency: natural processes tend to consistent ends.
Dr. Sewell is fully aware of the standard objections to the classical version of the second law argument, but his thesis is not the classic unsophisticated version of the argument.