Now it is such a bizarrely improbable coincidence that anything so mind-bogglingly useful could have evolved purely by chance that some thinkers have chosen to see this as a final and clinching proof of the non-existence of God. The argument goes like this : "I refuse to prove that I exist", says God, "for proof denies faith, and without faith I am nothing."
"But", says Man, "[Intelligent Design] is a dead giveaway isn't it? it could not have evolved by chance. it proves you exist, and so therefore, by your own arguments, you don't. QED."