To think that such a complex organ could be constructed by such random events seems very odd. Mutations simply cannot provide a sufficient mechanism to produce changes because mutations that are both not lethal and not neutral would need to be much more frequent. The fossil record simply does not support evolution. It is about the millions of missing links. The gaps in the fossil record have still not been filled, even though many paleontologists agree that the fossil record today is complete.
Most species exhibit no directional change during their tenure on earth.
As Gould says, not only do most species just suddenly appear with no record of a long, gradual period of development, but there is also no record of change for the species' during their stay on earth. There are no examples of this in the fossil record. For example, an animal that slowly evolves wings from appendages would become very awkward for climbing or grasping and so he would be made easy prey. So the absence of any transitional forms still posses a problem. Additionally, it is just not likely that a structures as complex as an eye or a wing could have been produced only through mutations in the course of a few generations.