To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic selection, seems, I freely confess, absurd in the highest degree. Consider the retina, consisting of 150 million correctly made and positioned specialized cells. Triggered by light, this switch can generate a nerve impulse . . Darwin, himself, later repudiated natural selection and returned to the discredited theory of Lamarkianism. I admit . .
Natural selection is based on total randomness of process.
Yet the structure and functions of plants and animals had to be the result of very intelligent planning. In the case of artificial selection, man intelligently controls the breeding to produce an improved end result. Out of 120,000 fertilized eggs of the green frog only two individuals survived. Many variations are so trivial that they could not possibly aid an organism in its struggle for existence. The theory does not explain how the gradual accumulation of trivial variations could result in the appearance of some of the more complex structures found in higher organisms.