## 2006/06/08

### wnč\zJԂDembski

C7 [yersinia]: Dembskifs original formulation of the CSI (complex specified information, i.e. specified complexity) argument was to:

(1) rule out chance causes (which can only produce small amounts of gspecified informationh — the definition of this is difficult but we can think of it as a e.g. gfunctional DNA changes with a probability of random occurence greater than 10^-150h),
(2) rule out regular causes (which can only transmit gspecified informationh, not increase it), and
(3) If (1) and (2) were successful, conclude design.

However this failed to rule out the very important possiblity of variation + natural selection, a combination of chance & regularity, which could randomly generate small amounts of specified information via chance and then preserve them (on average) via selection. Thus even hundreds or thousands of bits of SI (at some point we pass the 10^-150 random-generation-probability limit and reach CSI) could be generated by gradual accumulation.

DembskîƂƂCSI(w肳ꂽG/GȎw肳ꂽ)_̍\͎̂悤Ȃ̂łF

(1)Rɂ錴riR͂킸"w肳ꂽ"nB̒`͓A@\DNA̕ω_ɋNm10^-150𒴂j
(2)KIȌri"w肳ꂽ"`Bł邾ŁAnłȂj
(3) (1)(2)܂AfUCƌ_B

A͕ω+RAȂ킿RƋK̑gݍ킹rłĂȂB̕ω+ŔA_ɋRɂď"w肳ꂽ"nAɂĕۑ邱ƂłB]āAƂSrbg邢͐Krbg"w肳ꂽ"i鎞_ŁA_ɐm̊10^-150𒴂āACSIɂǂjQiIɏW߂ĐłB

To patch this hole, Dembski turned to Behefs concept of Irreducible Complexity. The beginnings of this are seen in his book Intelligent Design and IC is emphasized further in No Free Lunch. IMO Dembskifs SC argument is in fact entirely dependent on the IC argument.

So C7 is: Dembskifs SC argument boils down to Behefs IC argument, thus the SC argument adds nothing to the debate.

Dembskiɂ"R"͂ĂA"mߒ"݂͑Ȃ̂悤BāAtB^ɌJĂ܂āAĂĊҌs\ȕGɗ߂炵B

Ƃ낪..
C8 [yersinia] is that the IC argument has been subject to a number of severe criticisms, especially regarding indirect evolutionary pathways. In recent articles Dembski seems to have been hedging his bets by saying that even if convincing evolutionary pathways to IC/SC were found (to his satisfaction) that the SC would still somehow imply design via obscure means (front-loading the fitness function, but conceiving this in practical ecological terms is difficult).

Summary of C8: Dembski having an emergency backup design scenario in case it turns out that IC/SC can evolve removes the SC—>ID argument from being falsifiable even in principle.

C8̊TvFҌs\ȕG/w肳ꂽGi\Ƃ킩ꍇɔً}obNAbvfUCViIĂDembskíAw肳ꂽGCeWFgfUCւ̘_AIɂ؉\苎B

posted by Kumicit at 2006/06/08 00:01 | Comment(0) | TrackBack(0) | Dembski | |
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