Elementary my dear Watson
A wonderful discovery by Joseph W. Thornton at the University of Oregon shows how a specific stress hormone receptor evolved. Hormone receptors have previously been thought by some to be an irreducible system. Such systems, naysayers argue, provide no function when one component is taken away and thus cannot be created by evolution. This counter argument states that if a system has no beneficial function then it cannot be selected for and will not mutate into the beneficial form. Of course the key that people like Michael J. Behe are missing is that evolution is not a guiding force, rather it describes a observed progression of nature - a mechanism by which genes change over time. Mutations are random and neutral mutations are just as likely to survive as not. One might posit from Thorton’s findings that redundancy can also beneficial and therefore can lead to mutations of the form he discovered: when an accidental replication (perhaps beneficial because of redundancy - Omer) mutates it creates a new function. Genetic Replication may provide the stepping stone that, while too complex for people like Dr. Behe to reduce is completely natural.