Ken Ham is not defending intelligent design, Ken Ham is a Biblical Creationist
Intelligent design leaves out the definiteness of God
Ham is quite definite on the need of a Creator God and the results of Sin on the world and the need of a saviour.
How do you figure? Intelligent design points to God as the Creator as nothing else does. It is the definitive proof of a Creator God. The only difference is you don't need to quote scripture to show the millions of examples of intelligent design in the makeup of a person's body alone. Acceptance of intelligent design only requires common sense and a non-denial of the obvious as the Bible says in Romans 1:20.