All of evolutionary change, they are proud to say, is solely the result of innumerable accidental changes. In addition, evolutionists fiercely maintain that the mechanisms and modes operate specifically in six ways. When you buy the evolutionary theory, you get the whole package. Thus, selection creates complex order, without the need for a designing mind. All of the fancy arguments about a number of improbabilities, having to be swallowed at one gulp, are irrelevant.
Selection makes the improbable actual.
A bird will never evolve into a frog, nor will a vertebrate evolve into a worm. A monkey can produce human children, but people will never produce monkeys. The still more remarkable fact is that this evolutionary drive to greater and greater order also is irreversible. Evolution does not go backward. Bjorn Kurten, a Finnish paleontologist, writes about fossil lynxes which lost a tooth and then regained it.