How do we understand the sort of design that evolution supposedly does away with? Presumably, evolution means we can stop looking for some magical elf-and-Santa-workshop where God busily assembles new species. Great. Call off the search. If evolution were to fail, what then? Would it leave the sort of hole that could be filled by the the magical mystery species shop? No. We would just look for another natural explanation, whatever it was. If evolution were to fail, it would not leave a God-shaped hole, and so it follows that it is not filling one now, nor has it ever done so.
Evolution kills of the sort of naive and imaginary understanding of design that is very difficult to banish, for it is only with great difficulty that we banish the idea that design means that if we just follow back natural causes far enough or solve the last equation, we’ll finally pull back the curtain and see the prime mover pulling levers, drawing blueprints, and horsing together that mindless, deterministic, blind “nature-matter” we all hear about.