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The following are some counterexamples to the abilities of random mutation.  If just one cannot be explained by the idea, then logically the theory of evolution as it is must be inadequate.

The following are some counterexamples to the abilities of random mutation.  If just one cannot be explained by the idea, then logically the theory of evolution as it is must be inadequate.

* the [[immune system]] is irreducibly complex, as without one which is thoroughly developed, an organism would not be able to resist any infection<ref>Behe, Michael J. 1996. ''Darwin's Black Box'', New York: The Free Press, pp. 117-139.</ref><ref>[http://biology.creighton.edu/courses/BIO432/Evolution%2005.htm]</ref>

* the [[immune system]] is irreducibly complex, as without one which is thoroughly developed, an organism would not be able to resist any infection<ref>Behe, Michael J. 1996. ''Darwin's Black Box'', New York: The Free Press, pp. 117-139.</ref><ref>[http://biology.creighton.edu/courses/BIO432/Evolution%2005.htm]</ref>

* The neck of the [[giraffe]]. Although the length of the neck can be explained by simple sexual selection, the presence of valves in the neck (which are necessary because of its great length) raises a question of how one could have arisen without the other being there first (see the irreducible complexity argument).<ref>[http://www1.pacific.edu/~e-buhals/GIRAFFE2.htm]</ref>  

* The neck of the [[giraffe]]. Although the length of the neck can be explained by simple sexual selection, the presence of valves in the neck (which are necessary because of its great length) raises a question of how one could have arisen without the other being there first (see the irreducible complexity argument).<ref>[http://www1.pacific.edu/~e-buhals/GIRAFFE2.htm]</ref>