I am not disputing that the creatures with the best features for surviving in a desert are not the ones that will survive and reproduce. The point is that you are assuming that it is natural selection that selects these features in the first place.
-_- natural selection is literally the fact that organisms which have traits that benefit their survival and reproduction persist better than ones that don't. There is no evidence that this is in any way shape or form controlled by anything conscious.
That is what scientists who support the EES are saying that development processes like development bias, plasticity and inclusive inheritence and self-organising abilities with niche construction can produce suitable and well-integrated features that allow living things to adapt and survive in their environments. The issue is some think in adaptive terms for everything and make natural selection an all powerful force when it is not.
-_- natural selection is a part of evolution, not the whole thing. However, I would simply argue that certain features are just so advantageous for survival in specific contexts that they are always heavily selected for and hence tend to appear frequently. That is, there are only so many shapes that will most efficiently reduce drag in water, so selection results in a lot of similar body shapes. Pupils which are black will always be the most efficient at absorbing light, hence why even eyes from different lineages tend to have black pupils.
However, there are plenty of extinct organisms which had bodies so alien to anything that exists today that we aren't even sure what some of their body parts are. If there was a continuous bias for forms that had already occurred, why are so many Cambrian organisms vastly different from anything modern?
Because these features are well suited and integrated natural selection plays a minor role or is bypassed altogether. The enviromental pressures can trigger a creatures development system to produce the type of change they need becuase their biological systems are in tune with the environment.
This claim is demonstrably false. If it were true, then your skin color would depend primarily on where you were born rather than heritage. That is, it would be impossible to give birth to a light skinned child in the Sahara desert, no matter the skin color of the parents. After all, anyone that isn't albino does have the genes to produce both types of melanin.
And as true as it is that your skin can become darker in response to more sunlight, there are biological limits to how fast and how much it can do it. It also has absolutely no effect on the color your children are born as.
This woman was a tanning addict in the extreme, and yet, she surely never reached the darkest skin tones that humans can have
Living things can also change their enviroment to help them survive such as change soil composition, build nests, live underground, etc. These processes do not stem from random mutations to produce the variation or natural selection to select them.
Evaluations of inheritance in other animals heavily suggests that instinctual behaviors are genetic, and as long as it is genetic, natural selection can select for it as a trait. Just because it isn't something that affects their bodies outwardly doesn't mean it isn't just as much a trait as blue eyes or brown spots. Some organisms, such as humans, do learn behaviors and teach them to the next generation. How much this impacts evolution isn't known, but I'd infer that it'd make the populations likely end up having more genetic variety in the long run, since it allows organisms which would otherwise die out to survive long enough to have offspring.
That may be the case but the point is becuase Neo-Darwinism takes an adaptive and gene centred view it then gives natural selection the dominant role in how creatures adapt to their environment to survive. Many evolutionists make natural selection all powerful. Dawkins comes to mind.
It has long been known that natural selection is just one of several mechanisms of evolutionary change, but the myth that all of evolution can be explained by adaptation continues to be perpetuated by our continued homage to Darwin's treatise (6) in the popular literature. For example, Dawkins' (7⇓–9) agenda to spread the word on the awesome power of natural selection has been quite successful, but it has come at the expense of reference to any other mechanisms, a view that is in some ways profoundly misleading.
http://www.pnas.org/content/pnas/104/suppl_1/8597.full.pdf
-_- well duh, it would be extremely stupid to think that natural selection by itself governs the direction of evolution. In fact, it is blatantly obvious that it doesn't, because it is mutation that creates greater genetic diversity. Natural selection doesn't grant a population the traits it has to work with, mutation does. To treat any of the 4 major influences on evolution as individual things is inevitably going to make them seem inadequate. Because they are, individually. The entire paper you are referencing doesn't really agree with your assertions that natural selection is but a minor component. Furthermore, perhaps not in debates with you, I have mentioned that mutations are not purely random. For example, HOX genes and genes related to eye color mutate far less frequently than genes related to brain development and hair/fur color. However, there is no evidence to suggest that eukaryotes ever get mutations more likely to benefit the environment they are currently in over other environments, and as I have mentioned before, if the gene isn't present to be expressed, no change in gene expression can save you.
As mentioned above the EES mentions other processes that do produce variation that is biased towards a certain form over others. So in that sense, it gives direction to evolutionary change.
To an extent. For example, the paper brings up genetic drift and gene duplication as major factors that can shape a population. There are some people in the camp of considering genetic drift to be a stronger force in shaping populations than natural selection, but as of yet, the evidence isn't quite conclusive either way. It's difficult to evaluate any of the aspects of evolution individually, especially since human interference in and of itself can bias results.
This has been demonstrated and not be creationists but mainstream scientists.
No, it has not been demonstrated, look up the work of Michael Lynch on this matter as reviewed by others and they'll say his results have yet to be conclusive. But even if they were, none of the processes mentioned by Lynch are consciously controlled, and he never argues that any are intelligently directed.
The waiting time problem in a model hominin population
We show that the waiting time problem becomes very severe when more than one mutation is required to establish a new function. On a practical level, the waiting time problem greatly inhibits the establishment of any new function that requires any string or set of specific linked co-dependent mutations. For nucleotide strings of moderate length (eight or above), waiting times will typically exceed the estimated age of the universe – even when using highly favourable settings.
The waiting time problem in a model hominin population
-_- this paper is exceedingly strange. For example, you only have 4 different nucleotides that can exist in DNA sequences, and yet, this paper acts as if sequences of two different nucleotides side by side are super unlikely... even though any given one should have a 1/16 chance of existing. Also, it inflates the average length of the human gene from the actual number of 8466 base pairs to a ridiculous 50,000 base pairs. Yeesh, Theoretical Biology and Medical Modelling Journal needs to step up more with the peer review... although the journal exists solely for the theoretical, not stuff that has actually been tested extensively.
Simulating evolution by gene duplication of protein features that require multiple amino acid residues.
We conclude that, in general, to be fixed in 10(8) generations, the production of novel protein features that require the participation of two or more amino acid residues simply by multiple point mutations in duplicated genes would entail population sizes of no less than 10(9).
Simulating evolution by gene duplication of protein features that require multiple amino acid residues. - PubMed - NCB
Uh, I thought you didn't want to use sources from creationists? Because this one was written by Behe... in 2004, making it far too old to be considered up to date with our current understanding of genetics even if the guy wasn't well know for his biases.
One thing that stands out to me with his paper is that he assumes that simply because a given outcome is unlikely that it makes it impossible. Yet, it doesn't matter how large and varied a deck a person has, if they deal 5 cards, some combination of 5 cards will be dealt. Who knows how many possible beneficial genes could exist that never will simply because they happen to never be dealt?
Also, for whatever reason, Behe doesn't bother to account for active sites. The small portions of proteins that mostly determine function and drastically change function if they are altered at all.
Also, while population sizes of 1 billion sound very impressive I am sure (10^9) as do 10^8 generations, single celled organisms have extremely high populations and reproduce so frequently as to make his suggested "necessary" population sizes and generation numbers quite obtainable in nature for many organisms. But assuming that single base pair mutations by themselves are the only source of new gene functions worth accounting for was rather silly. And that bacteria evolution experiment that was started in the 1980s demonstrated that traits that require multiple mutations (such as citrate digestion) can occur via multiple independent mutations.
-_- not that his paper bothers to account for the fact that active genes are more prone to being exposed and thus mutating than inactive genes and non-gene segments. Seriously, it isn't even fair to try to cite a paper from 2004, our understanding of genetics is so much better now that I can't tell if Behe was omitting stuff or if it genuinely wasn't known at that time.