BaylorJacket said:
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- The fossil record shows the "abrupt" appearance of 17 to 20 new phyla of organisms with complex body plans during the Cambrian era, without the requisite slow, gradual transformation evidenced in the Pre-Cambrian era as the theory of evolution would hold. There are many are "explosions" this type - the massive biodiversity event which say the sudden appearance of birds (and feathers), winged insects, and flowering plants, the Eocene period where we see the sudden appearance of the first mammals - each without the requisite transition forms. The idea of "punctuated equilibrium" is merely a scientific way of saying "we don't know how it happened, but it just happened... and really fast". It is just a description of what is observed in the fossil record - it does not give the biological mechanisms by which it happened.
It's true that the Cambrian explosion represents a period of rapid diversification, but it's important to recognize that it happened over tens of millions of years, which is a long time even if it seems fast relative to the entire history of life on Earth. If we found evidence of an ape transitioning to a human over the process of a year - that would absolutely destroy evolutionary theory. But we don't, as even "explosive" changes take millions of years.
Regarding punctuated equilibrium, it is not merely an admission of ignorance. It is a well-supported hypothesis that posits evolutionary change can occur in rapid bursts, followed by long periods of stasis. This pattern can be explained by environmental and ecological factors, and it is consistent with observed genetic and morphological changes in the fossil record. While the exact mechanisms underlying these bursts of evolutionary change remain an area of active research, this hypothesis does not undermine the validity of the theory of evolution.
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- the idea that the fossil record is "incomplete" is considered a false one by paleontologists and other relevant scientists. They believe the fossil record to be near complete, and do not expect any major findings. Of course, this could be wrong, but it still highlights the fact that you are currently without evidence.
This is absolutely an over generalization and position held by the minority of paleontologists. To believe that we have discovered nearly the entire fossil record of all species that have lived on earth is absurd. Especially when you consider that this field of study is merely only a few centuries old. The fossil record is biased towards organisms with hard body parts, such as shells or bones, and those that lived in environments conducive to fossilization, such as marine or lake sediments. Soft-bodied organisms and those from less favorable environments are less likely to be preserved or discovered.
Regarding "you are currently without evidence", I don't understand what you mean? While the fossil record is not the primary source for macro-evolution evidence, we absolutely have vasts amount of evidence of transitional fossils. Humans are the ones I know most about, so we can go into that, but we have the expected transitional fossils for fish -> land-dwelling animals, non-aviation dinosaurs -> modern birds, and many others.
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- Selection processes can RESULT in genetic change of a population. But the change itself is not caused by it. Please understand the point rather than continuing to repeat your error.
I agree that selection processes result in genetic change in a population, and that the change itself is not directly caused by these processes. Instead, selection processes act on genetic variation already present within a population, which is generated by random mutations and other factors, such as genetic recombination. It is the interplay between genetic variation and selection processes that drives the evolution of populations over time.
It amazes me how atheists think that punctuated equilibrium solves the problem of the fossil record failing to show intermediate forms before the Cambrian explosion. You are taking the existing statistical improbability of new functional genetic information to emerge that can explain the tremendous amount of exquisitely complex new body plans and functions of 20 new phyla of organisms, and condensing the time period to achieve them into a MUCH narrower window. That is not solving your problem, that is compounding it.
The two mechanisms offered by punctuated equilibrium to explain the emergence of such tremendous genetic information are : 1) Allopathic speciation - the idea that a portion of the population becomes geographically isolated, and from this smaller population, genetic change has an easier time of becoming "fixed". And 2) Species selection - the idea that some species tend to speciate into other species more easily than other species.
The problem with allopathic speciation is that a separated population from the original population is much smaller in number, which now makes the probability for new, functional genetic information to arise much, much smaller, and so you've just compounded the waiting time problem.
The problem with species selection is that it requires a large of array of species to be already existing in order for it to manifest. But that is exactly what the fossil record does NOT show in the preCambrian layer, and is exactly the problem that punctuated equilibrium is trying to solve! So in other words, it is assuming the conclusion in order to explain the conclusion - an argument in a circle.
Here is famed atheist and evolutionary biologist Richard Dawkins about species selection: "
What I mainly want a theory of evolution to do is to explain complex, well-designed mechanisms like hearts, hands, eyes, and echolocation - NOBODY, not even the most ardent species selectionist, thinks that species selection can do this."
Understanding that punctuated equilibrium utterly fails at explaining how such enormously complex structures and functions could have arisen,
Jay Gould, the author of Punctuated Equilibrium theory himself, said this: "
I recognize that we know no mechanism for the origin of such organismal features."
Jay Gould's solution? To fall back to traditional neo-darwinism claims, the very ones which he had to try to explain the insufficiency of, by coming up with punctuated equilibrium.
Re: your comment: "...we absolutely have vasts amount of evidence of transitional fossils" - the whole reason why punctuated equilibrium theory was developed was precisely because as Gould and Eldredge noted, there's a dearth of transitional fossils to explain geobiodiversity events such as the Cambrian explosion.
Btw, I also would like to point out that once again, you are promoting an untestable hypothesis (punctuated equilibrium), despite your claims against them. LOL.