He's a journalist.
Again the irony is that you are relying on authority. Like the fundamentalists do.
The fact is that there are some interesting problems with evolutionary theory. That doesn't make it untrue but it means that it isn't that easy to point to evolution as a scientific fact.
Here's a brief section of the article that I think is interesting.
Evolution breaks down into at least three logically separable components: First, that life arose by chemical accident; second, that it then evolved into the life we see today; and third, that the mechanism was the accretion of chance mutations. Evolutionists, not particularly logical, refuse to see this separability.
The first, chance formation of life, simply hasn’t been established. It isn’t science, but faith.
The second proposition, that life, having arisen by unknown means, then evolved into the life of today, is more solid. In very old rocks you find fish, then things, like coelacanth and the ichthyostega and later archaeopteryx, that look like transitional forms, and finally us. They seem to have somehow gotten from A to B. A process of evolution, however driven, looks reasonable. It is hard to imagine that these animals appeared magically from nowhere, one after the other.
The third proposition, that the mechanism of evolutions is chance mutation, though sacrosanct among its proponents, is shaky. If it cannot account for the simultaneous appearance of complex, functionally interdependent characteristics, as in the case of caterpillars, it fails. Thus far, it hasn’t accounted for them.
It is interesting to note that evolutionists switch stories regarding the mechanism of transformation. The standard Neo-Darwinian view is that evolution proceeds very slowly. But when it proves impossible to find evidence of gradual evolution, as for example when sudden changes appear in the fossil record, some evolutionists turn to “punctuated equilibrium,” which says that evolution happens by sudden undetectable spurts in small populations. The idea isn’t foolish, just unestablished. Then there are the evolutionists who, in opposition to those who maintain that point-mutations continue to account for human evolution, say that now cultural evolution has taken over.
Finally, when things do not happen according to script—when, for example, human intelligence appears too rapidly—then we have the theory of “privileged genes,” which evolved at breakneck speed because of assumed but unestablished selective pressures. That is, the existence of the pressures is inferred from the changes, and then the changes are attributed to the pressures.