In chapter 12 of this book Johnson deals with the Irrationality of Evolution. The goal of this particular chapter is to show not only that (macro) Evolution cannot be proven but that the presupposition of Naturalism that lies behind it cannot even support its own claims. Thus, Naturalism is inconsistent and irrational (see definition 2). To make his terms clear Johnson writes "Microevoltuion is a fact that is easily demonstrated by taking note of the different ethnicities of people that have developed along geographical lines. Macroevolution, on the other hand, is the theory that the complexities of the human race have evolved from non-living matter through the slow process of adaptation" (pg. 141).
So, the goal of his chapter is not to say that species don't adapt but that it is absurd to think that macroevolution is a tenable position to hold (i.e. a fish evolving into a kangaroo). It is not my goal to put forth in detail all of Dr. Johnson's arguments, for that you need to buy the book! Also, anything not argued well in this blog is not a representation of Dr. Johnson, but of my own inability to communicate his ideas as clearly as he did! With that in mind, let me list 9 convincing reasons why macroevolution is bunk according to this chapter:
1. It is irrational to think that life can come from non-life