Originally posted by npetreley
So the problem I have with evolution is not that it is based on faith in the scientific method, but that people SAY it is based on the scientific method but it is NOT. Therefore their faith is misplaced.
Baloney.
Here's the scientific method as defined on a U of Rochester site:
1. Observation and description of a phenomenon or group of phenomena.
2. Formulation of an hypothesis to explain the phenomena.
3. Use of the hypothesis to predict the existence of other phenomena, or to predict quantitatively the results of new observations.
4. Performance of experimental tests of the predictions by several independent experimenters and properly performed experiments.
You can not satisfy steps 1 and 4 as they pertain to the kind of evolution creationists believe is false.
Sure I can.
Step 1 says "observation and description of a phenomenon", not "observation and description of the theory". Your silly example places the cart before the horse. Darwin didn't formulate the theory of evolution by observing species evolving. If he did, then "The Origin of Species" would hardly have caused a stir.
Here are the "phenomena" that Darwin observed:
- Variation within a species
- The perpetual struggle for existence
- Correlation between variation and ecology (think of the finches)
- The geographical distribution of species
- Comparative anatomy
- Patterns of embryo development
- Rudimentary organs
In fact a large portion of Darwin's text is devoted solely to describing the phenomena that he observed.
1. No one has ever observed a bacteria evolve into a kangaroo.
So what? There are a whole host of scientific theories we accept as true that no one has ever observed directly. For example:
- a tree turning into coal
- an electron "tunneling" through a potential barrier
- the warping of spacetime by matter
- a Uranium atom being struck by a neutron and fissioning into two smaller atoms
- hydrogen and oxygen atoms combining to produce water
- the formation of rain drops in clouds
- the internal workings of the Sun
Shall I continue?
Your "no direct observation" objection is quite silly, Nick. As I have shown, a large amount of our scientific knowledge has been derived without the benefit of direct observation. Or do you deny that knowledge, too?
4. Nobody has ever evolved a bacteria into a kangaroo in the lab via several properly performed and corroborated independent experiments.
No one has, and no one ever will, I suspect. (Even if they did, creationsts would still object that evolution still wasn't proven because an intelligent agent was necesary, namely, the experimenter).
But your impossible experiment is just one of THOUSANDS of possible experiments, many of which ARE POSSIBLE to perform. Researchers have been performing these experiments for 150 years since the publication of Darwin's theory and these experiments all confirm one thing: Darwin was largely correct.
All anyone has been able to do is produce bits and pieces of what they BELIEVE are parts of the process that could produce a kangaroo from a bacteria -- and then extrapolate that information into the ASSUMPTION that a bacteria actually DID evolve into a kangaroo.
I think you are largely correct in this statement, although you engage in a bit of hyperbole. Your "bits and pieces" assessment of the evidence grossly understates the true measure of the evidence. Yes, there is extrapolation, and yes, there is a provisional conclusion (what you call an "assumption") that kangaroos evolved from primitive bacteria-like forms. But this is because it is
the only explanation that is consistent with the observed evidence.
So it's not faith in science or the scientific method that I find fault with. It's faith in the ILLUSION that the theory/hypothesis of evolution has any scientific validity and is testable. In other words, scientists have placed their faith NOT in the scientific method, but in their IMAGINATION, and then call it "science" to give it the appearance of validity and respectability.
Since I've pretty well shown that your critique of the scientific basis of evolution is ill-founded, your conclusions about evolutionary theory are unsubstantiated.
Some people think they've met the conditions because they've "predicted" some of what we'd find in the fossil record. There are two things wrong with that.
First, it never matters when the predictions are false. There was an article recently about some fish fossil that had paddles with 15 toes, or something like that. The article stated that this "rewrote the book" on the evolution of hands and feet. So how can you actually say that fossils fulfill the predictions when it doesn't matter when they don't? All you have to do when they DON'T is simply reroute the phylogenic tree or make a space for a new species. So it doesn't matter what the fossil record shows -- you can always find a way to fit it into evolution if you just use your IMAGINATION.
You fail to realize that there is a big difference between falsifying a
specific path of evolution and falsifying the
theory in general. I think the example you cited is a perfect demonstration of how scientists are willing to abandon their theories (in this case, the evolution of limbs) in the face of contradictory evidence.
Think of it this way: there are an infinite number of evolutionary pathways between two species. Scientists theorized as to what the evolutionary path bewteen non-limbed and limbed creatues looked like. Evidence was found to contradict this, and therefore to exclude a certain set of pathways. There is still a very large set of pathways that remain possible.
Now if someone finds a fossil chimpanzee in the same strata as a T-Rex, then evolutionary theory will be in for a serious challenge.
Second, the prediction step 4 is talking about is NOT a prediction about what you'll find in evidence from the past. It's a prediction about what will happen if you try to repeat the process!
Let's review step 4 again:
"4. Performance of experimental tests of the predictions by several independent experimenters and properly performed experiments."
Where exactly does it say, Nick, that experimental tests of evidence from the past are disallowed?
Again, keep in mind that much of our knowledge of geology and astronomy are based on experimental tests of things that happened in the past. Do you reject these sciences, too?
Now it's no good offering the excuse that we don't have millions of years to test the hypothesis in a lab. You may be right that this is why it's not possible to test evolution according to a strict interpretation of the scientific method, but that doesn't excuse the fact that you go ahead and call it science, anyway. It isn't, and no amount of speculation will ever make it science.
Let's look at the definition of the scientific method one more time to assess your claims:
1. Observation and description of a phenomenon or group of phenomena.
Done. Thanks to Darwin and hundreds of other naturalists before him.
2. Formulation of an hypothesis to explain the phenomena.
Done, obviously.
3. Use of the hypothesis to predict the existence of other phenomena, or to predict quantitatively the results of new observations.
Done. The fossil record, biogeography, genetic similarities, and morphological similarities are just a few of the predictions of evolution.
4. Performance of experimental tests of the predictions by several independent experimenters and properly performed experiments.
If 150 years of experimental tests and confirmation doesn't count as success here, I don't know what will.
Remember, too, that the discovery of DNA was a HUGE, HUGE test of evolutionary theory. This had the potential to demolish evolution in one fell swoop. Instead, it confirmed it in spades.
In summary, Nick, you assertion that evolution is not science is completely, utterly groundless. There is not much more I can say.