Book excerpt: The "argument from poor design" is one of the most common arguments hurled at proponents of Intelligent Design. It's also completely mistaken. The components of the human body which critics claim to be products of "poor design" are really instances of the critics' own misunderstandings of the relevant engineering criteria. In this book, anatomy professor Jerry Bergman takes you on a tour of the human body's most criticized features and help you understand what they do and why they were made the way that they are.