The Empire Strikes Back
The Flagellum Unspun: The Collapse of "Irreducible Complexity"
by: Kenneth R. Miller
-The flagellum has been put forward as the flagship model of an IC system that points to intelligent design.
-Miller attempts to show that there were precursors to the system therefore not making it irreducibly complex.
-he holds up a Type-III Secretatory system as a precursor to the flagellum
-this device is used by certain cells to do cool thinks like spread the Bubonic plague
-the TTSS system, as it's called, and the flagellum share about ten proteins with the flagellum having about 30 more unique ones
-we can see a lot of similarity in the structures by looking at the pictures below
-so evolution could have built on this earlier "irreducibly complex system" in order to get to the bacterial flagellum
-Dembski has 2 responses to this:
-1) the TTSS system has a different function from the flagellum and the former couldn't get to the latter with intelligent design
     -he says that a motorcycle engine can be used as a heater but it couldn't evolve into
      a motorcycle without intelligent design
     -the TTSS system represents only one step in a long series of processes that would
      have take place - can't walk from California to Japan just because you found the
      Hawaiian Islands
-2) it is much more reasonable to say that TTSS evolved from the flagellum
     -water has been around for about 2 or 3 billion years making the flagellum a long
      needed invention
     -the TTSS systems is used on multi-celled organisms which means that is probably
      a much more recent invention
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