William Dembski has put up a paper entitled Intelligent Design is not Optimal Design, which purports to counter the argument from suboptimal design (e.g., “Why would
Godan intelligent designer wire human retinas backward, when he had done a better job with octopodes?” or “Why is the panda’s thumb such a kludge? Why not use the same thumb design as in humans?”). His conclusion:
This is a fallen world. The good that God initially intended is no longer fully in evidence. Much has been perverted. Dysteleology, the perversion of design in nature, is a reality. It is evident all around us.
I’ve added a section about this to the notes on the Frequently Asked But Never Answered Questions About Intelligent Design.
(Thanks to Uncommon Descent for the pointer.)