furrykef wrote:
And I think your assumptions are way off.
That is the most important thing you've said this entire conversation. One thing I've learned is that for intelligent debate, our assumptions must be exposed, and agreed upon. If there is no agreement of assumtptions, then all there can be is argument. So, you very wisely get to the root of the disagreement: my assumptions.
The best way to proceed will probably be to agree on something. Is there anything we can agree on? First, I will gladly agree that DNA (or RNA, for creatures that don't have DNA) is the basis for all proteins in each of any living organism's cells. Second, I will agree to selective adaptation through elimination of unsatisfactory alleles by morbidity.
furrykef wrote:
I don't think doubling every 100 years is conservative at all. It would be in modern times, but you cannot extrapolate from modern times to the past.
This is one place I agree with you: you can not extrapolate from a modern amount of radioisotope C-14 in the atosphere what the amount was in the past, the fundamental assumption of Carbon-dating.
furrykef wrote:
Of course, in any case I think it's demonstrably provable that ...
By that sentence, I observe that you don't have sound philosophy of science. As long as you insist on that kind of reasoning, I don't know how to communicate to you. I recommend a graduate course on Philosophy of Science like the one I took. Or, read the first chapter of
A Brief History of Time by Stephen Hawking. Allow me to reference page 10...
Stephen Hawking, the worlds most respected modern physicist wrote:
...You have to be clear about what a scientific theory is. ...[a] theory is always provisional, in the sense that that it is always a hypothesis: you can never prove it.
When you talk about "proof," it must be either in the mathematical or legal sense, there is no scientific sense of the word! You can "establish" or "find," and if you're lucky, you get to "investigate" and "discover." But you can not prove. As long as you pretend that science proves truths, you suffer from chronological snobbery and miseducation by your grade-school teachers.
furrykef wrote:
Nice misspelling of "experiments" there.
I normally correct those when someone graciously notes my mistake, but since you've referenced it, I will allow it to remain.
furrykef wrote:
Microevolution ... has been observed and it has been verified in laboratories and it has been done without scientists mucking about with genes themselves, and it's been done with drosophila -- fruit flies. Look it up.
Involving random, positive mutations caused "naturally?" Google's top few results come up with lab-induced mutations or lethal random mutations.
furrykef wrote:
First, you are distorting the definition of "mutation". Down syndrome is not a mutation. It is a genetic disorder caused by a trisomy of chromosomes: a person with Down syndrome has three of chromosome 21, instead of two.
Of this, I am aware. Not all living things have the same number of chromosomes, so for speciation, trisomy is absolutely required at some point in the history of DNA. Without any occurance of trisomy in evolution, all creatures from bacteria to corn to cow to man would have the same number of chromosomes.
furrykef wrote:
This is not a genetic mutation, where genes themselves change, this is having the wrong number of genes.
Correct.
Wrong number of genes. Each member of every species must maintain it's
right number of genes to be alive and healthy. Since this number can not change, we've got an impediment to evolution.
furrykef wrote:
The reason you haven't seen a positive genetic mutation is you haven't seen a mutation at all -- not one you can recognize, at least.
Have you seen one? Or do you have blind faith?
furrykef wrote:
The changes are almost always subtle and not observable, piling up over many generations.
Nope, a mutation happens the instant an imperfect copy of the DNA occurs. If one generation has a different allele than either of it's parents, then it has a mutation. Genetic information, like computer files, is digital, not analog. With analog information, gradual changes can take place copy-after-copy. DNA has a base-4 digital encoding and each copy is either exact or a mutation. The allele resulting from a mutation may (in some cases) encode the exact same protein, which happens when a codon on the mutant allele is a synonym for the codon of the original: GCT->GCC, for example. In the case that the new allele is not synonymous, then the new allele can not make the correct protein. Fortunately, in sexual reproduction, we usually get two copies of the chromosome, and the other gene may have the allele for the correct protein! Of course, if the protein the mutant gene does code for is toxic, or if the allele on the other chromosome is too recessive, the mutation is manifested.
furrykef wrote:
If you have a means of observing many generations, as scientists do with fruit flies, then you might actually observe mutations.
I do have a means of observing! Written records exist from long ago. The observations of 5000 years are in: humans haven't changed.
furrykef wrote:
First you must have an observation to make, which as I've pointed out, you haven't.
I'm not some grade schooler pumped full of ideas by an over zealous Sunday school teacher. I am a man whose looked at both sides, the eveidence they present, and the proponents of both positions. I happen to disagree with your concusions. Please do not try to make this a childish game of opinion-tennis or some presidential debate where your insulting my misspelling or your making claims about my sources being dubious is your main standing point. I really would like to have a healthy discussion where new information is revealed, questions are answered, and each party can grow in knowledge and wisdom.