Irreducible complexity
From CreationWiki, the encyclopedia of creation science
Irreducibly complexity (IC) is a conceptual test for intelligently designed components or system. It is asserted that if a system cannot be reduced to fewer components and retain functionality, then it could not have evolved by the gradual assemblage of components over successive generations.
The concept was popularized by Lehigh University biochemist Michael Behe in his 1996 book Darwin's Black Box. Intelligent design theorists argue that while some systems and organs can be explained by evolution, those that are irreducibly complex must have been assembled by an agent of intelligence.
There are many examples of molecular machines, such as the bacterial flagellum, that are composed of numerous elements. Behe rightly points out that such machines are irreducibly complex in that if any one part were removed, the function in question would be instantly lost. How then could such a machine be built up gradually if it will not work to any selectable degree until all its parts are present in their proper order?
| “ | Michael Behe describes irreducible complexity as "a single system which is composed of several interacting parts that contribute to the basic function, and where the removal of any one of the parts causes the system to effectively cease functioning. An irreducibly complex system cannot be produced gradually by slight, successive modifications of a precursor system, since any precursor to an irreducibly complex system is by definition nonfunctional. Since natural selection requires a function to select, an irreducibly complex biological system, if there is such a thing, would have to arise as an integrated unit for natural selection to have anything to act on. It is almost universally conceded that such a sudden event would be irreconcilable with the gradualism Darwin envisioned. At this point, however, 'irreducibly complex' is just a term, whose power resides mostly in its definition. We must now ask if any real thing is in fact irreducibly complex, and, if so, then are any irreducibly complex things also biological systems."[1] | ” |
| “ | In The Origin of Species Charles Darwin stated: "If it could be demonstrated that any complex organ existed which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down. But I can find out no such case.[2]" | ” |
Related References
- ↑ Molecular Machines: Experimental Support for the Design Inference by Michael Behe
- ↑ Charles Robert Darwin (1809-1882), Origin Of Species, The Harvard Classics 1909-14
Related links
- Evidence for Intelligent Design from Biochemistry by Dr. Michael Behe
- Irreducible Complexity Revisited by William Dembski. PCID Volume 3.1, November 2004
- Argument: ‘Irreducible complexity’ by Jonathan Sarfati
- Evolving the Irreducible: Behe's Mousetrap Problem by Sean D. Pitman M.D.
