Circular Reasoning

Often evolutionists will use the similarities between organisms as evidence for evolution. One person wrote to me that every developmental gene found in humans has also been found in the housefly, as if this was supposed to convince me of something (if it is true). However, let us look at the reasoning. If evolution were true, then similarities between organisms could be evidence of common descent. Even then, this need not be true, because of "convergent evolution." Now, an evolutionist becomes accustomed to seeing common features as evidence of common descent. So he or she is then likely to present the similarities between life forms as evidence that they all descended from a common ancestor, thereby proving evolution. However, it is readily seen that the reasoning is circular. A Designer could just as well use a common theme repeatedly if it is most suitable for some purpose.

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