Exact(7)
He does not directly cite Behe's "irreducible complexity" argument, but I presume he, like Behe, rejects the idea that complex adaptations can evolve by steps so small or simple that each step could occur as a chance mutation.
But be wary of analysts who try to take this complexity argument too far.
To counter Behe's irreducible complexity argument, they give a fascinating account of how proteins that originally evolved for one function can be co-opted by the cell for another; through such "exaptation," complicated cellular machinery can be built up in a gradual Darwinian way.
The book even includes an extensive discussion of Behe's "irreducible complexity" argument about the flagellum (refuted in general and in detail by Pallen and Matzke 2006) and, even more brazenly, argues that the pattern of life's relationships resembles not Darwin's tree of life, but an orchard of life.
Critics point out that the irreducible complexity argument assumes that the necessary parts of a system have always been necessary and therefore could not have been added sequentially.
Creationist claims have persisted that such complexity evolving without a designer is inconceivable, however, and this objection to evolution has been refined in recent years as the more sophisticated irreducible complexity argument of the intelligent design movement, formulated by biochemist Michael Behe.
Similar(53)
Why not reflect the nuance and complexity of argument and concern within Aboriginal and Torres Strait Islander Australia by having Indigenous proponents on both sides of the debate?
His words divorced of the complexity of his argument and their context spread quickly — an allegation against a multitude, provoking anger and offense.
In the complexity of its argument and profusion of imagery, a poem such as "Dum Diane vitrea" ("While Shining Diane") far exceeds the imagination of any classical author.
Many people thought he was misogynistic or worse, though another version, a duet with a female rapper, Njena Reddd Foxxx, added some complexity to that argument.
But when an experienced driver encounters a sudden increase in complexity -- an argument erupts and it also starts to sleet -- that driver will probably stop the conversation and pay attention to the road.
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