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Author | Topic: Who Owns the Standard Definition of Evolution | |||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10359 Joined: Member Rating: 6.4 |
Percy writes: Saying this a little more formally, theories are never proven because of the principle of tentativity. This is why I add the qualifier "beyond a reasonable doubt".
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Taq Member Posts: 10359 Joined: Member Rating: 6.4
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sensei writes: Show me where I said this. Right here: "Another one of your made up rules? What nonsense even." So I will ask again. According to you, it is nonsense that a theory is the preferred theory if: 1. It is proven beyond a reasonable doubt. 2. Makes specific predictions no other theory makes, and those predictions are supported by observations. Could you explain? What conditions? You don't even seem to know what you are talking about. I will quote the same reference for the third time.
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The pattern appears as a result of the clustering method, as I said often enough already. That's false. The nested hierarchy was recognized 100 years before Darwin wrote Origin of Species. Linnaeus was the first to document the nested hierarchy, and he did so without any "clustering methods". Also, you might as well claim that mass only exists because weight balances exist. What you and nearly all ID/creationists fail to understand is that tree-like structure in data is objectively and empirically measured.
quote: If you throw in a matrix of morphological features with randomly assigned features then you get really low measurements of phylogenetic signal. With actual data from biology, you get high scores. The same for DNA sequences.
Why explain something that is not even true? Why even think that a designer is forced? Forced by whom? You make zero sense! Logically, it's more likely that a designer is free to choose as they please. Not forced at all. Exactly. Therefore, ID/creationism does not predict an objective and empircally measurable nested hierarchy. The theory of evolution does make this prediction, and that prediction is borne out in the data. This is why I stated that there is no other explanation for the data other than common descent and evolution. It seems you agree with me.
I stick to facts, unlike you. No, you don't. You falsely claim that phylogenetic signal is just an artefact of the method. Randomized data does not produce a phylogenetic signal when using these methods.
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Taq Member Posts: 10359 Joined: Member Rating: 6.4
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Theodoric writes: I assume you finished your assignment to troll the libs and unbelievers. Did you learn anything? You certainly reaffirmed our beliefs. One has to wonder if any creationists take a step back and ask a really simple question. Do you really think that millions of biologists from every culture and faith are all conspiring to support a fake scientific theory devoid of any empirical evidence, and have done so for 150 years? It's as silly as creationists who think the second law of thermodynamics disproves evolution. Do they really think a scientific concept they learn about in high school is something biologists just happened to overlook? If only there were more honest creationists like Todd Wood.
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Taq Member Posts: 10359 Joined: Member Rating: 6.4
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sensei writes: No, you claimed that it is proven beyond a reasonable doubt. I asked you for your evidence and reasoning.You support it by stating that it is the preferred theory. I've already given the evidence and reasoning in multiple posts throughout this thread. Just to refresh your memory: 1. A nested hierarchy2. A specific pattern of transition and transversion mutations. 3. A specific pattern of sequence conservation in introns and exons. 4. Transitional fossils. 5. 200,000 shared Endogenous Retroviruses. And that's just the tip of the iceberg. But let's get a refresher on what was said.
quote: I have given two characteristics for a preferred theory: 1. It makes specific predictions that are then supported by observations. This is preferred over a theory that predicts anything and everything. 2. The preferred theory is one that is proven beyond a reasonable doubt. Again, why are either of these not a characteristic of a preferred theory? Added in edit: We can use general relativity as analogy. We have two theories: 1. General Relativity2. Planets move about the solar system because invisible fairies are pushing them. General relativity predicts one specific orbit for each planet. The Invisible Fairy theory makes no predictions about what paths planets should take around the Sun because Invisible Fairies can move the planets wherever they want. General relativity is supported by multiple independent lines of evidence and is considered proven beyond a reasonable doubt by the community of physicists. I say that General Relativity is the preferred theory because: 1. It makes specific predictions that are borne out in experiments. The competing theory predicts anything and everything. 2. General Relativity is proven beyond a reasonable doubt.
And yeah, it is nonsense, that being the preferred theory, makes the theory proven beyond reasonable doubt. That's not what I said. I said that the theory proven beyond a reasonable doubt makes it the preferred theory. Do you think theories that are not proven beyond a reasonable doubt are the preferred theory?
But let me ask you this. Suppose we find extraterrestrial life. And we analyze life on Earth and the lifeforms we found from other planet(s). And we find that single celled lifeforms on other planets have similarities with those on Earth. Then we could fit all into a single hierarchical tree, could we not? Not necessarily, no. It seems you still don't understand what a nested hierarchy is. Let's say that we found a species with the following features here on Earth: 1. Three middle ear bones (like those found in mammals)2. Teats (like those found in mammals) 3. Flow through lungs (like those found in birds) 4. Feathers (like those found in birds) All of the features found in this species are similar to other species found on Earth. So would this fit into a nested hierarchy with the rest of life on Earth? NO!!!!!!! This species would be a massive violation of a nested hierarchy. A species with a mixture of mammal and bird features would seriously challenge common ancestry. If these sort of violations were common place, then we would have to throw common ancestry out of the window, even if all of these features were shared between multiple species. A nested hierarchy isn't simply shared features between species. IT IS THE PATTERN OF BOTH SIMILARITIES AND DIFFERENCES THAT MATTER. Edited by Taq, .
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Taq Member Posts: 10359 Joined: Member Rating: 6.4 |
Percy writes: And of course if this alien life used a non-DNA blueprint for life then we would know from the outset that it wasn't related to life on Earth. Even if DNA is somehow a common solution, there are other features that we strongly suspect are arbitrary. One such example is codon usage where there is an apparent arbitrary relationship between the amino acid and 3 base anti-codon on the same tRNA. If humans wanted to we could create a genetic system where codon usage is entirely different.
No, of course not. It would be a possibility. Even if it were a fact that life on Earth came from space, we likely wouldn't be able to uncover evidence of that fact sufficient to create a broad consensus. That's because the common ancestor existed billions of years ago, and both alien and terrestrial life have been evolving for all the billions of years since. Precisely. We wouldn't expect to see a single cell organism that shared 90% of it's DNA sequence with E. coli, as an example. In other words, it wouldn't nest within a family or genera of bacteria. Instead, it would branch off at the very base of the tree of life on Earth.
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Taq Member Posts: 10359 Joined: Member Rating: 6.4 |
sensei writes: Yes, that was what you said. If it was not, then your argument was pointless. What I was trying to do is show you how theories are assessed. For example: Theory A makes very specific predictions. Theory B can accommodate any possible observation. In this case, Theory A is the preferred theory. In the case of the theory of evolution and common design, the theory of evolution makes a very specific prediction which is a nested hierarchy. Common design does not. Common design can accommodate any and all combinations of features and DNA sequences. On its face, the theory of evolution is already ahead. This is before we even look at the evidence. Your response to this basic explanation of assessing theories was to say that I had downgraded evolution from proven (beyond a reasonable doubt) to just the preferred theory. This is a complete mischaracterization.
If a theory is proven beyond doubt, why even compare to other theories and deciding which is more preferred? Because that is what ID/creationists are asking us to do. We are explaining why common design doesn't measure up to the theory of evolution, both from a theoretical basis (makes better predictions) and from an evidentiary basis (proven beyond a reasonable doubt). This was all hashed out 140 years ago:
quote: Exactly, branching off still makes it one tree as a whole. And that does not prove common ancestry with the alien species. It would be strong evidence for common ancestry. As mentioned by Percy, panspermia is a thing. It could also be that aliens seeded our planet with life by bringing in a microorganism from their planet, or seeded both planets.
You can continue making up rules and apply them inconsistently, only where it fits your narrative. And then call it evidence beyond reasonable doubt. But those rules don't hold in general.
They are applied consistently. I also find it rather telling that you use imagined evidence against the theory. Why not look at the evidence that actually exists?
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Taq Member Posts: 10359 Joined: Member Rating: 6.4
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Theodoric writes: Or sensei is a liar and/or a troll. I tend to think that this type of behavior in general is a mixture of cognitive dissonance and conditioning from ID/creationist literature. ID/creationism is almost entirely rhetoric and semantics. This is why we see them arguing over the semantics of how theories are described instead of actually addressing the data. In fact, they will use imaginary evidence as a rhetorical device, as seen in this very thread. ID/creationist literature is all about how words are defined, so that is what they are conditioned to do. For example, they will argue incessantly that DNA is designed because they have defined DNA as a code. What they won't do is reference actual DNA sequence data. What we have is two groups with different purposes. Science is trying to explain the data using the scientific method. ID/creationism is trying to justify their religious beliefs using rhetoric and semantics.
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Taq Member Posts: 10359 Joined: Member Rating: 6.4 |
popoi writes: The reasoning is that if the diversity of life was produced by a series of populations diverging and changing, we would expect all of life to fit in a nested hierarchy defined mostly by those points of divergence. But there are also a lot of specific features we would expect that tree to have that wouldn't be present in one you could make about galaxies or cars or whatever non-living thing. You can force any group of items into a tree. The big question is how good is the fit. For scientists, it needs to have a number on it in order to be science. This is why scientists constructed several methods for objectively measuring how well a data set fit a tree-like structure. As it turns out, complex life gets a much higher score than random distributions of characters, as we would expect to see if common ancestry is true. The other question we could ask is what we would expect to see if common design is true. The answer is anything. There is absolutely no reason why we would expect to see tree-like structures in the data if common design is true. We would just as likely expect a species to have fur and three middle ear bones as we would a species with feathers and three middle ear bones.
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Taq Member Posts: 10359 Joined: Member Rating: 6.4 |
The Barbarian writes:
Biologists use "change in allele frequency in a population" or words to that effect. "Descent with modification" was the definition Darwin used, and it still works as a good general description. Allele frequencies incorporates a modern understanding of genetics
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Taq Member Posts: 10359 Joined: Member Rating: 6.4 |
Percy writes: What's new is the possibility that early life became complex much than earlier currently thought, that LUCA (Last Universal Common Ancestor) occurred around 4.2 billion years ago. This is a surprisingly early date because most assume that the bombardment of Earth by asteroids and comets between 4.1 and 3.8 billion years would have sterilized the planet. If abiogenesis did occur 4.2 billion years ago it also indicates that simple life should be somewhat common in the universe (i.e. where there is a rocky planet with liquid water). David Kipping put out a paper just a couple of years ago that looked at the chances of abiogenesis being easy or rare. In 2020, his analysis had a 2.8 times higher chance for easy abiogenesis over rare based on a much later date for abiogenesis. However, one of Kipping's latest videos on his Cool Worlds youtube channel reanalyzes the odds with this new data, and the chances are now statistically significant at 13.8 to 1 in favor of easy abiogenesis.
Edited by Admin, : Embed YouTube video.
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