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vern_humphrey
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The problem is, irreducible complexity doesn’t exist. The evolution of complex organs like the eye and the ear is well understood – although a century ago, it wasn’t.Here, Q is something like irreducible complexity. A generation ago, evolution was having trouble explaning P, e.g., the lack of a mechanism that can cause large scale mutations in the DNA structure. Now we know several such mechanisms, and I’m sure in another generation, there will be an explanation for irreducible complexity.
Take the eye – some life forms developed a sensitivity to light. That was a survival advantage. Concentration of the light-sensing cells in a spot or two was another advantage. When the cell became slightly cup-shaped, the organism had the capability of directional light sensing, another advantage. As the cup deepened, the primitive eye formed. And in fact, you can find creatures with almost every step in the development of the eye living today.
The development of the ear follows a similar progression.