The NAS (National Academy of Sciences??? Science, Evolution, and Creationism) misrepresents irreducible complexity and the flagellum.[44]
By: Casey Luskin Intelligent Design and Evolution Awareness (IDEA) Center January 15, 2008
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"The NAS accurately defines irreducible complexity ??? ???If one component is missing or changed, the device will fail to operate properly??????but then promotes a false test of irreducible complexity, wrongly claiming that if one part of the flagellum can perform some other function, then irreducible complexity is refuted.
The NAS claims that the fact that some flagellar components can function as a needle-nosed pump???the Type III Secretory System (T3SS)???shows that the flagellum is not irreducibly complex. However, a number of biologists have concluded that that the T3SS was not a precursor to the flagellum.[45] Moreover, microbiologist Scott Minnich explained during the Kitzmiller trial that the fact that some sub-components of the flagellum can perform other functions is not sufficient to demonstrate a Darwinian explanation for the origin of the flagellum because there is still a huge leap in complexity from a the needle-nosed pump to a flagellum. The unresolved challenge that the irreducible complexity of the flagellum continues to pose for Darwinian evolution is summarized by William Dembski:
???At best the TTSS represents one possible step in the indirect Darwinian evolution of the bacterial flagellum. But that still wouldn???t constitute a solution to the evolution of the bacterial flagellum. What???s needed is a complete evolutionary path and not merely a possible oasis along the way. To claim otherwise is like saying we can travel by foot from Los Angeles to Tokyo because we???ve discovered the Hawaiian Islands. Evolutionary biology needs to do better than that.???[46]
link: http://www.discovery.org/a/4405









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