So many misconceptions, it boggles the mind.
canuck, on Jul 26 2008, 05:04 AM, said:
The historical record relating to life on earth suggests that there has been more than one occasion in which there was a major change in the type and number of species populating the planet. These individual periods of change seem to have taken place within a very short span of time; but once established, persisted for millions of years.
There is also evidence suggesting that there have been a number of occasions in which most of life on the planet was wiped out as a result of some cataclysmic event.
After these extinctions, within a very short period of time, the earth was repopulated with an abundance of new species.
To date, no plausible explanation has been forthcoming for any of these events: either the diversification of species; or the speed with which they appeared.
It's easily explained. During mass extinctions countless niches are freed up, which gives other life forms a chance to radiate.
canuck, on Jul 26 2008, 05:04 AM, said:
The traditional explanation of a gradual evolution over long periods of time, is not supported by either the available evidence, or by logic.
I've provided plenty of evidence in this thread. Just because you ignore it doesn't mean it's not there. Oh, and what logic does it violate exactly?
canuck, on Jul 26 2008, 05:04 AM, said:
In fact, the rapid repopulation of the earth is clear evidence against the current theory of gradual transitions.
The Cambrian explosion happened over a period of 70-80 million years. Of course laymen notice the word "explosion" and gets unrealistic ideas in their heads.
canuck, on Jul 26 2008, 05:04 AM, said:
The inference from the evidence that is available, however, suggests that the current biological processes of life are little unchanged from the earliest life forms. Ie: the respiratory systems, digestive systems, nervous systems, etc all seem to function pretty much the same now as they did in the distant past.
There is no evidence supporting the view that primordial life forms times were functionally any more primitive than those life forms that exist today; ie: the ancient species may have been primitive in aesthetic design, but there is no evidence to suggest that their biological systems were any more primitive in function.
The first 2½ billion years of life consisted of single celled organisms. Eukaryotes existed 700 million years before multicellular organisms arose. Biochemically all life is very similar though, as one would expect with common descent.
canuck, on Jul 26 2008, 05:04 AM, said:
This also would seem to be substantiated by their longevity: the trilobites existed, unchanged, for millions of years; as did the dinosaurs. The inference from this is that their biological and physiological functions were far from primitive.
Are you kidding? There have been found 17.000 species of trilobites. Look up dinosaur history as well, they underwent plenty of change.
canuck, on Jul 26 2008, 05:04 AM, said:
All of this implies that the failure to find transitional forms bridging various species is due to the fact that such transitional forms never did exist.
Great. Another layman who have read some Gould quote mines and convinced himself that he knows everything there is to know about paleontology.
Here's some evidence for gradualism. Ah, yes, I forgot, you don't look at evidence you don't agree with.
canuck, on Jul 26 2008, 05:04 AM, said:
If we view the development of life in the context of the paradigm stated in my previous post, then an explanation becomes evident.
Specifically, the building blocks of life had been developed before life appeared on earth; ie: the first edition of the “Periodic Table of Genes” was compiled before life appeared on earth.
The earlier life forms could be considered "proof of concept", in which the systems of life were being tested. With each successive mass extinction, and repopulation, the basic concepts were being fine tuned; but it seems that it was mainly the packaging that changed, not the content.
This is all your fantasy, based on your misunderstandings of science. You've provided no evidence, you've been unable to address the evidence for evolution, you've been unable to address the nested hierarchy, you've provided no way to test your idea.
canuck, on Jul 26 2008, 05:04 AM, said:
There is a convergence of evidence from a number of scientific disciplines that suggests that the universe in general, and the biosphere of planet earth in particular, is the consequence of a directed process.
Cosmology supports this with its current theories for the formation of the universe; nuclear physics supports this with the current theories of the synthesis of the atomic elements; exo biology supports it with its specifications of the requirements for life. Now, the thesis based on the “Periodic Table of Genes” proposes a conceptual framework for the appearance of life on earth.
All in all, it looks like the universe in general, and Planet Earth in particular is one giant lab experiment.
You seem to be nothing but empty assertions. You never provide any evidence or valid arguments, you just assert, assert, assert ad nauseam. How about addressing the evidence I have presented, or answer the questions I posed in my last post?
"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts." (Bertrand Russell)