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Originally posted by dave420
BIOLOGICAL evolution has to do with how organisms on earth have developed into species. It has nothing to do with how planets are made, or where the universe comes from. Before life, there was no biological evolution.
I fear you are confused.
[edit on 2/9/08 by dave420]
Originally posted by fmcanarney
Yes I must be confused.
Evolution is limited to the single solitary sole planet of earth, and limited even to the time that biological lige begins. I see.
Argue for your limitations and sure enough they are yours.
Creation however occurs prior to life on earth and hence is less limited that your myth of evolution. That is not rational. You must then create another theory to explain the presence ot the earth before life, and the universe as well.
Cool hope it continues to work for you.
Today Haeckel is remembered for his biogenetic law in which he proposed that "ontogeny recapitulated phylogeny" (Ref 5, p. 353). Haeckel theorized that animals climbed up their own family tree during embryonic development and as such presented us with a vision of how things had once been. Armed with his inaccurate representations of embryonic development and the convincing arguments of his biogenetic law, Haeckel created the phylogenist's 'dream' (Ref 6, pp. 246-247). However, by the beginning of the twentieth century, the shine of recapitulation had lost its luster. Gould recounts the disappointment that ensued with a quote from E.B Wilson's description of the "exact" experimental method:
It is a ground of reproach to morphologists that their science should be burdened with such a mass of phylogenetic speculations and hypotheses, many of them mutually exclusive, in the absence of any well-defined standard of value by which to estimate their relative probability. The truth is that the search [. . .] has too often led to a wild speculation unworthy of the name of science; and it would be small wonder if the modern student, especially after a training in the methods of more exact sciences, should regard the whole phylogenetic aspect of morphology as a kind of speculative pedantry unworthy of serious attention." (Ref 6, p. 247)
Paleontologists David Raup and Steven Stanley were equally emphatic about the inaccuracies of Haeckel's claims:
"During the eighteenth and early nineteenth centuries, many students of Mesozoic ammonites attempted to apply Haeckel's recapitulation theory to all ammonite species, believing that the course of ammonite evolution could thus be read from ontogenetic changes in shell ornamentation and suture patterns. In 1901, Pavlow invalidated the strict recapitulation concept by showing that in certain Jurassic lineages of ammonites new evolutionary features arose in the early stages of ontogeny; not until later in the evolutionary history of their respective lineages were these changes retained in the adult stages [. . .] ontogenetic development of the new features was retarded, relative to time of reproductive maturation." (Ref 7, p.275)
In other words, changes in the adult form arose after changes in the embryo, not before. It could no longer be convincingly argued that ontogenetic changes were a reflection of some evolutionary past. In light of such findings, it is paradoxical that prominent zoologists such as Richard Dawkins still maintain the importance of the so called 'embryological continuum'. Dawkins wrote, for example, that science, "can point out that the (embryological) continuum that seamlessly joins a non-sentient foetus to a sentient adult is analogous to the (evolutionary) continuum that joins humans to other species" (Ref 8, p.34). Likewise science writer David Quammen emphasized the classical Darwinian perception of the embryo not only as "the animal in its less modified state" but also the embryo as revealing, "the structure of its progenitor" (Ref 9, p. 13). Obviously, Dawkins and Quammen are at odds with the alternative, more persuasive assessment that was built on empirical evidence.
"The assumption that ancestral reminiscences could always be distinguished from recent embryonic adaptations had not been sustained. Too many stages were missing, too many others discombobulated. The application of Haeckel's law produced endless, unresolvable, fruitless argument, not an unambiguous tree of life." (Ref 6, p. 246)
These findings are in themselves preliminary indicators that the different classes of vertebrate are discontinuous. The data does not fit Darwin's premise of a few common progenitors from which all of life had originated.