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To: PatrickHenry
… I said (and this point you skipped over):

What you call macro-evolution is nothing more than the cumulative effect of numerous instances of micro-evolution, which I assume you accept. You accept micro-evolution because you can literally see it happening from one generation to the next. You can't live long enough to see the cumulative effect of tens of thousands of generations -- except in the case of bacteria.


Sorry, I thought I had addressed this issue. Nonetheless, based upon your comments, I obviously did so poorly. Therefore, please accept the following exposition as addressing the issue you have raised:

As I recall, experiments in genetics have been conducted successfully with fruit flies and other relatively complex animals that have short life cycles (in contrast to simple one-celled bacteria). Macro-evolution could conceivably be demonstrated in similar fashion as “tens of thousands of generations” could be observed relatively easily (at least, compared to other animals). Halley made and carefully recorded a prediction concerning the comet that bears his name using Newton’s theories. Halley knew his predictions could not be verified in his lifetime. Nonetheless, he recorded his predictions based upon theory and others, later, substantiated them.

Such a demonstration has not, to my knowledge, been forth coming in the case of macro-evolution. Given the potential, since Darwin first posited his theory in 1869, to possibly structure such an experiment, even if it required several temporally successive researchers to provide the observations to verify predictions, my challenge to the macro-evolution theory for lack of experimentally reproducible evidence seems to be valid. Do you have a cite for such an experiment to which you could refer me?

If you accept micro-evolution because of the evidence, and if macro-evidence is just a bunch of micro-evolution, what makes you say that there is no evidence?

Please see the above discussion for my response to this issue.

And why do these discussions so quickly arrive at the "Run, Spot, run" level of discourse?… But macro-evolution doesn't need to be experimentally reproducible, any more than the history of France does… All I can do is try to explain things for the reasonably intelligent person. But can't devote my efforts to removing each new obstacle you throw in your own path.

I do not fault your motive in attempting to “explain things for the reasonably intelligent person.” In fact, I applaud it. Nonetheless, where it is possible to find fault in your explanations is in what appears to be the fallacies of logic of your expositions. Please allow me to construct some admittedly overly simplistic syllogisms to illustrate my point:

First Syllogism:

Premise: Fossils, DNA sequencing, etc., exist.

Premise: The theory of macro-evolution provides a reasonable explanation of how these things came to be.

Conclusion: Therefore, the theory of macro-evolution is fact.

Alternate Syllogism:

Premise: Fossils, DNA sequencing, etc., exist.

Premise: The theory of intelligent design provides a reasonable explanation of how these things came to be.

Conclusion: Therefore, the theory of intelligent design is fact.

Both of these syllogism have the following logic fault:

Non causa pro causa

The fallacy of Non Causa Pro Causa occurs when something is identified as the cause of an event, but it has not actually been shown to be the cause. For example:

"I took an aspirin and prayed to God, and my headache disappeared. So God cured me of the headache."

This is known as a false cause fallacy. Two specific forms of non causa pro causa fallacy are the cum hoc ergo propter hoc and post hoc ergo propter hoc fallacies.

I suppose where you and I clash is in what I perceive as your insistence that a theory (the theory of macro-evolution, specifically) is a fact rather than an explanation competing with other potentially valid explanations.

I am willing to entertain your counters to my exposition above if you feel it is not “at the "Run, Spot, run" level of discourse.”
433 posted on 01/04/2005 6:56:45 AM PST by Lucky Dog
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To: Lucky Dog
Premise: Fossils, DNA sequencing, etc., exist.

Premise: The theory of evolution provides a reasonable explanation of how these things came to be.

Premise: No other scientific theory has been proposed which explains even the slightest bit of the evidence.

Conclusion: Therefore, the theory of evolution is the current scientific paradigm.

437 posted on 01/04/2005 7:20:22 AM PST by balrog666 (I am against religion because it teaches us to be satisfied with not understanding the world.)
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To: Lucky Dog
... my challenge to the macro-evolution theory for lack of experimentally reproducible evidence seems to be valid. Do you have a cite for such an experiment to which you could refer me?

My point is directed to your insistance upon the need for experimentally re-creating the long sequence of innumerable instances of micro-evolution (which you do accept), and which sequence would extend through thousands of generations, to convince you of the phenomenon you call macro-evolution.

Leaving aside the observed instances of bacteria and fruit flies, but staying within the confines of human observation, we do indeed have examples of ever-more obvious instances of speciation, or near-speciation. We have dog breeds, we have the well-documented farm-fox experiment. We have other Observed Instances of Speciation. But you seem to want an experimental re-creation of the whole tree of life, or you won't accept even the concept of evolution. I respectfully suggest that your demand is an unreasonable obstacle to even trying to understand the evidence.

The fallacy of Non Causa Pro Causa occurs when something is identified as the cause of an event, but it has not actually been shown to be the cause.

The difference between what you call macro-evolution and ID is that in the case of evolution there actually is an observed cause, and that's mutation (observed daily, and historically tracable through the DNA) plus natural selection. ID, on the other hand, proposes an invisible, never-seen, never-evidenced cause, one which is furthermore entirely unnecessary in view of the cause proposed by the theory of evolution. I respectfully suggest that the difference is not only readily apparent, but it's overwhelming.

I suppose where you and I clash is in what I perceive as your insistence that a theory (the theory of macro-evolution, specifically) is a fact rather than an explanation competing with other potentially valid explanations.

Nope. Evolution happens. It's observed. That's the fact. The theory of evolution explains what happened in the past and how it happened. Taking macro-evolution specifically, the theory of evolution is entirely sufficient to explain the sequence of observed facts (the fossils, the DNA, etc.). I gather, from your prior posts, that your objection to even considering the theory is that macro-evolution hasn't been experimentally re-created. This is a strained objection.

If you could establish, through DNA evidence, that you were a descendant of Napoleon, would you tolerate an objection of this nature?

442 posted on 01/04/2005 7:50:25 AM PST by PatrickHenry (The List-O-Links for evolution threads is at my freeper homepage.)
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To: Lucky Dog

Please state the "Theory of Intelligent" design. Then we will be able to discuss the syllogisms you posed.

For your information, here is a widely accepted summary of the Theory of Evolution:

The theory of evolution
A number of theories that explain, to the best of current knowledge, by what mechanisms evolution occurs. (This translates into the technical definition of changes in allele frequencies in populations over time.) The theory can be falsified by showing that allele frequencies do not change over time or by showing that humans and dinos are fossilized in the same strata and date from the same time.

(The reason we must ask you for the state of the "Theory of Intelligent Design is because we don't know what it says.
While you are at it, you can mention how the theory you present can be falsified.)


525 posted on 01/04/2005 1:20:18 PM PST by shubi (Peace through superior firepower.)
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