August wrote:ncooty wrote:August,
Thank you so much for your post.
I have a couple of questions:
How do you operationalize (i.e., objectively define) "too complex" for nature to have created without direction?
How do you distinguish between something that appears to have been intelligently designed and something else that does not appear to have been intelligently designed? What would be an example of something that was not intelligently designed?
I have some other questions, but I don't want to bombard you. Thanks again.
By the way, the funny thing is that when my student brought this up on Thursday, several other students made some preliminary attacks on the idea and I was busy defending the idea that these kinds of novel, scientific theories are important to the growth of human knowledge. I was defending ID and the possibility that it has something important to offer. I reviewed the ordeals of Copernicus and Galileo and the dogmatic opposition from the church to their new ideas. I'm not against you guys at all. I have faith in the process.
Hi, no worries. I removed it in the meantime because it looked to be too basic for where the discussion was.
I appreciate your confidence, but I still feel like I'm on a basic level.
I think I have a ways to go before I get my head all the way around this.
August wrote:Behe describes irreducible complexity as: "By irreducibly complex I mean a single system composed of several well- matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning." A further refinement of that (Griffith, 2004), is the concept of "strict irriducability", where any biological system cannot be simplified and still retain the the level of function needed for selective advantage.
I have a few issues here. First, I don't see how the existence of an irreducibly complex system shows that the components did not used to be individually functional. Second, I don't see how non-functional mutations preclude procreation. Third, I would argue that speciation does not require selective advantage, just viability. The mutation survives as long as it does not
impede procreation; it doesn't have to improve the probability of procreation.
August wrote:Right now, as far as I can determine, which may not be too far, we can distinguish between designed and non-designed in two ways. One, if it is irreducibly complex, then it is designed, and secondly, supporting that, if there is no evolutionary pathway to that system.
You have taken a definitional sufficiency position on the role of irreducible complexity. What you wrote was that if it is irreducibly complex, then it is designed. This argument is useful for determining inclusivity, but not exclusivity (i.e., for deterimining what is
not intelligently designed). A definitional necessity statement would read: If it is designed, then it is irreducibly complex. Would you agree that that is true? If not, your definition isn't really useful in determining what is
not intelligently designed. Here's why. If I have an item in front of me and I want to determine whether or not it was designed, what do I do? According to your definition, I should seek to determine if the item meets the criteria of irreducible complexity (which still seems problematic). If it is irreducibly complex, then it is intelligently designed. If it is
not irreducibly complex, it doesn't tell me anything (just that the item isn't
necessarily intelligently designed). Thus, the definition doesn't help to distinguish between intelligently designed items and items that were not intelligently designed.
Moreover, regarding evolutionary pathways to irreducible complexity, I have just suggested two ways in which genetic mutation can lead to irreducible complexity. 1) Procreation by organisms with mutations that do not impede procreation or survival. Thus, apparently non-functional mutations might amass. The organism might use those amassed mutations (be they 2 or 200) in a novel way, to achieve some novel end (such as fulfilling a new niche). 2) Alternatively, singularly functional mutations might integrate with other singularly functional mutations to perform a novel function. Note that the change in function would explain why the functionality would be considered irreducible. Of course, this still assumes that you and I will perceive every possible use of a genetic mutation, such that we can deem whether or not it is in any way "functional". You might find either or both of these implausible, but given the amount of time and the number of opportunities for cellular mutation, I think even small probabilities (on the iteration level) are substantial overall. In any case, improbable is a long way from impossible.
What's something that has no evolutionary pathway leading to the system? (Again, this seems to state a dichotomous decision implicitly: either evolution can explain it or ID must be right. I would argue that this is a false dichotomy. Moreover, I don't understand why we keep getting dragged back into a reliance on falsification of evolutionary theory as a way to support ID.)
August wrote:As for your other question, what would be an example of something that is not intelligently designed, I don't have a ready-made answer for that. By implication, if we were to say that some things were intelligently designed and others not, then that raises further questions about the nature of the designer, and the mechanisms of ID. Of course, being a Christian, I am not ashamed to admit my bias and say that everything was intelligently designed, but the theory of ID stops short of that.
It seems to me that there are two options: either everything is intelligently designed or not everything is intelligently designed. So far, it seems that the shaky concept of irreducible complexity is the basis for determination of design. If I survive a haircut, I would suppose that would mean I was reducibly complex, and thus, not necessarily intelligently designed. (KMart and Thinker probably already think I'm not intelligently designed.
) If people aren't intelligently designed, what is? Thus, I doubt irreducible complexity is the best basis for intelligent design.
I think that's as far as I can go without a better understanding of the definition. It would help me to know if irreducible complexity is a necessary or sufficient component of intelligent design. If it is sufficient, what other sufficient components are there? (I still don't understand the "lack of an evolutionary pathway" statement, which I still see as presumptuous of a dichotomy.) I really want to flesh this out so we can discuss this in depth in class and really give ID the credit and representation it deserves.
Thanks.