RE: [asa] Doug Groothuis v. William Dembski

Thanks for this update. I find this discussion very interesting. I tried to follow this analysis below but it quickly reminded me of Vizinni trying to choose which goblet of wine to drink in the Princess Bride. :)

But stepping back for a second, don't we agree that there has to be some valid explanatory filter for the examples of science you mention below to be valid? If it is valid for forensic science then why wouldn't it be valid for ID? Excepting for a moment that we don't know anything about the designer because that seems to apply to me in forensics as well.

I have an acquaintance that is a a big ID proponent and he is also a forensic scientist ptofessionally and he makes this argument all the time and I have not yet satisfactorily resolved this in my mind. His scientific findings and testimony in his field of forensic toxicology convict people of capital crimes in the court of law, how can we say that there is not some valid way to infer design or at least intent?

We have also spent a good deal of time on this list discussing Wayne Williams who was convicted of several counts of murder in the 80's based on probability arguments of carpet fibers found on the victims and matching that of William's house and car. This is another example that my friend uses since it was his office and colleagues that ran this investigation and he has intimate knowledge of it.

I am now convinced from theological reasons that it is a mistake to try to prove that we can detect a Designer from nature but due to the examples above I'm curious how we can rule out that we can't detect a designer? I am now thinking that we may have to give Dembski some credit here because this does seem logical to me to be able to infer design in the bacterial flagellum or the eye even if we don't try to make the irreducible complexity argument.

How do others on the list reconcile this I'm curious?

Happy New Year

John

Rich Blinne wrote:
> In the latest PSCF Doug Groothuis opines: William Dembski has done more than anyone to theoretically ground the ID movement in a bona fide scientific strategy. The details of Dembski’s thinking—which often reach a high theoretical level—cannot be pursued at length here. Dembski lays out a method for detecting design in nature by means of an empirical strategy that makes use of rigorous criteria. This method of detecting intelligent causes is already accepted in several areas of science, such as archaeology, forensic science, intellectual property law, insurance claims investigation, cryptography, random number generation, and the search for extra terrestrial intelligence (SETI). ID simply employs these methods used for detecting or falsifying design and applies them to the natural sciences as well.  Design is detected through the use of an “explanatory filter” which checks for the marks of contingency, complexity, and
 specificity. An event or object may be reckoned the result of an intelligent cause—as opposed to a non-intelligent, material cause—if it exhibits all three of these factors. In other words, each factor by itself is a necessary, but insufficient, condition of design. However, if all three factors are combined, then this threefold cluster becomes a necessary and sufficient indicator of design.   But there is a critic of the explanatory filter that Groothuis needs to deal with, Bill Dembski. On Uncommon Descent http://www.uncommondescent.com/intelligent-design/some-thanks-for-professor-olofsson/#comment-299021 Dembski said, "I’ve pretty much dispensed with the EF. It suggests that chance, necessity, and design are mutually exclusive. They are not." So far as the explanatory filter being widely accepted, it is no longer accepted by its proponent! But then again Dembski trips up Dembski in the same issue: Bartholomew argues that my method of
 design detection as outlined in The Design Inference is fatally flawed because it presupposes design to identify the rejection regions I use to * eliminate chance and infer design* . Thus my method of design detection is supposed to constitute circular reasoning. But Bartholomew never engages my key notion of specification, which extends and enriches the traditional statistical understanding of a rejection region... By Dembski trying to acquit himself of circular reasoning he shows himself guilty of another logical fallacy, the false dichotomy. If you eliminate chance, you can only infer design if chance and design are mutually exclusive which Dembski admitted otherwise on UcD. It doesn't matter that Dembski's concept of specification is hopelessly flawed, making a hash out of Kolmogorov complexity and causing information theorists to wretch. This is because even if his so-called rejection region is not poorly specified, it nevertheless fails to
 make design necessary and is the reason why Dembski's hope that CSI will save him won't do the trick. By admitting that chance, necessity and design are not mutually exclusive, in my opinion he gives up the whole farm. This leaves the so-called design inference far short of the "rigorous criteria" that Groothuis credits Dembski with. At best it's a probabilistic argument and that is neither a "necessary or sufficient indicator of design". Even here another admission by William Dembski shows that you cannot make even a probabilistic argument, "The challenge for determining whether a biological structure exhibits CSI is to find one that’s simple enough on which the * p robability calculation can be convincingly performed* but complex enough so that it does indeed exhibit CSI." A full decade after the The  D esign Inference and we still don't have a single decent example. Young people have a phrase for this: epic fail. Rich Blinne Member ASA

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Received on Thu Jan 1 08:49:18 2009