Two threads combine in this posting. First my comments on the Beckwith thread where I show how Dembski and Behe use the term specification or purpose to refer to “function”, and secondly a thread on strings in which the concept of purpose arose again.
First let’s revisit Dembski’s and Behe’s position on function which shows that their use of the term specification or purpose clearly refers to function.
van Till Wrote:
However, when it comes time for Dembski to support his conviction that the bacterial flagellum is specified, the procedure becomes considerably more casual, almost facile. Speaking on the specification of biological systems in general, Dembski simply asserts that, “Biological specification always refers to function. An organism is a functional system comprising many functional subsystems. In virtue of their function, these systems embody patterns that are objectively given and can be identified independently of the systems that embody them. Hence these systems are specified in the sense required by the complexity-specification criterion.”NFL, p. 148.In these four brief sentences the foundation of Dembski’s entire strategy for certifying the specification of biotic systems is laid.
Or in Behe’s terms “a purposeful arrangement of parts” where purpose and function are interchangeable.
Q The whole positive argument for intelligent design as you ve described it, Professor Behe, is look at this system, look at these parts, they appear designed correct?
A Well, I think I filled that out a little bit more. I said that intelligent design is perceived as the purposeful arrangement of parts, yes. So when we not only see different parts, but we also see that they are ordered to perform some function, yes, that is how we perceived design.
Page 44 of Behe’s cross examination on Day 11 of the Kitzmiller trial. See also Analysis of Behe’s Testimony, Part 1: Purpose and Function at “Dispatches from the Culture Wars”
In other words, the use of such terms as ‘specified’ or ‘purpose’ merely serve to obscure that the authors are really talking about function. But function in evolution is an inevitable outcome of variation and selection. In other words, when Dembski argues that something is specified and complex, he merely observes that something is functional and we do not fully understand its history (or at least we do not understand its history sufficiently to Dembski’s liking). When Behe talks about ‘purposeful arrangement of parts’ he merely is discussing how various parts work together towards a particular function.
Dr Francisco Ayala has advanced the following prepositions
I advance three propositions. The first is that Darwin’s most significant intellectual contribution is that he brought the origin and diversity of organisms into the realm of science. The Copernican Revolution consisted in a commitment to the postulate that the universe is governed by natural laws that account for natural phenomena. Darwin completed the Copernican Revolution by extending that commitment to the living world.
The second proposition is that natural selection is a creative process that can account for the appearance of genuine novelty. How natural selection creates is shown with a simple example and clarified with two analogies, artistic creation and the “typing monkeys,” with which it shares important similarities and differences. The creative power of natural selection arises from a distinctive interaction between chance and necessity, or between random and deterministic processes.
The third proposition is that teleological explanations are necessary in order to give a full account of the attributes of living organisms, whereas they are neither necessary nor appropriate in the explanation of natural inanimate phenomena. I give a definition of teleology and clarify the matter by distinguishing between internal and external teleology, and between bounded and unbounded teleology. The human eye, so obviously constituted for seeing but resulting from a natural process, is an example of internal (or natural) teleology. A knife has external (or artificial) teleology, because it has been purposefully designed by an external agent. The development of an egg into a chicken is an example of bounded (or necessary) teleology, whereas the evolutionary origin of the mammals is a case of unbounded (or contingent) teleology, because there was nothing in the make up of the first living cells that necessitated the eventual appearance of mammals.
I conclude that Darwin’s theory of evolution and explanation of design does not include or exclude considerations of divine action in the world any more than astronomy, geology, physics, or chemistry do.
In other words, teleology in evolution is inevitable although one needs to differentiate between internal teleology which describes ‘function’ or external teleology which results from the actions of an external agent. Read more about Ayala’s thesis on Meta Library
So what has been established is that all the fancy footwork by Dembski or Behe has done nothing to resolve internal versus external teleology other than to obfuscate by using terms which are suggestive of the latter even though they refer merely to ‘function’.
Now something more interesting: Based on the comments by Island, let’s apply the Second Law of Thermodynamics for once against creationists. Would that not be ironic.
Sagan and Schneider have published an interesting book called “Into the cool”
From the blog I quote
It turns out that the question of the purpose, or function, of an organism s whole body is related to that of the observed evolutionary trends.* The functioning of the whole organism connects to the observation of evolutionary trends via the science of energy flow. The key observation of this science, thermodynamics, is the second law. The second law of thermodynamics, which has wrongly been argued to conflict with life, says quite simply that energy disperses. You may have thought that the second law of thermodynamics says something about entropy rising, or disorder. Well, it does, but not exactly. The use of the terms entropy and disorder have been bandied about in many confusing ways. But the spreading of energy also leads to what we would call ordered or organized systems.
Sagan and Schneider argue that there is purpose in nature. Their definition of purpose seems to be equivalent to ‘function’ so it is interesting to show how two different approaches lead to a similar assertion. Behe and Dembski use the term purpose to imply a higher entity being responsible, Schneider and Sagan show how purpose is what follows from the laws of nature. Again we return to apparant versus actual design, apparant versus actual CSI, apparant versus actual IC, internal versus external teleology. Of course, scientists present (detailed) explanations as to how these apparantly designed systems may have arisen. All ID has to offer is: “An Intelligent Designer did it because He wanted to do it using means available to Him”. And yet ID activists complain that evolution deals in ‘just so stories’. The irony…
Examples include hexagonal structures called Bernard cells, whirlpools and hurricanes, and complex chemical reactions of which life, of course, is a most fascinating example. In each case the complex structure arises in an area of energy flow, and represents nature s “attempt” to follow its second-law mandate of energy dispersal. I put “attempt” in quotes because obviously it is considered an example of the pathetic fallacy, silly personification
What do these examples tell us? That life thrives not at equilibrium but far away from equilibrium where the SLOT leads almost inevitably to increase in complexity. Much of the early work started with Prigogine but more recently, much research has been added to Prigogine’s ground breaking work
People at the Into the Cool Blog waste no words about ID
“Most people–even many who are writing in this group–do not appreciate how unbelievably dishonest the ID crowd is, Behe and William Dembski in particular. Dembski is really the principal ‘go to’ science guy for the ID crowd. The one thing Dembski and Behe share with the creationist crowd in general is a deep aversion to the term ‘natural science.
And similarly to many others they have found that ID is scientifically vacuous
I have spent several months on their non-science. There is nothing there. It is like one hand clapping; the one reason they have received so much press is that the media says that it is only “fair if we cover both sides.” But there is no “other side” as far as the science goes. They should cover it as a religious story.