googlef87758e9b6df9bec.html A Sure Word: So tell me again how evolution could be falsified? Conclusion

Friday, April 19, 2019

So tell me again how evolution could be falsified? Conclusion


In order to bolster the claim that evolution is a valid scientific theory, Rational Wiki (RW) posted an article suggesting several ways evolution might be falsified. In a series of posts, I've already dealt with the first 6 items on their lists and saw they were rather ridiculous sounding. They were only slightly more substantive than saying, “Evolution would be disproved if it could be shown that animals don't reproduce.” The last two items, however, are serious tests of the theory. Perhaps it's not a coincidence that these were made by someone other than RW. This last post in this series will deal with both of them but it's going to be a longer post than usual. Let's get right to it:

Charles Darwin made the case a little differently when he said, "If it could be demonstrated that any complex organ existed which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down. But I can find out no such case."

Evolution is sometimes described as “descent with modification.” A wing is a modified leg – leg is a modified fin – and so on and so on backward. Darwin understood that if some structure were ever discovered that could not have possibly been formed by this series of successive modifications, it would utterly disprove his theory. I agree. Keep in mind, this isn't my test. It isn't RW's test. It isn't any creationist's test. This is Darwin's test. So if we ever found such a structure, Darwin himself believed it would “absolutely break down” his theory.

Michael Behe is a biochemist who invented the term, “irreducible complexity.” In his own words it means, a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning.” To illustrate this, he used the example of a mousetrap. A mousetrap has very few working parts. However, if any part is missing, the entire trap becomes useless. Since all of the parts have to be present before a mousetrap has any function, Behe believed the mousetrap was a good analogy of the type of structure Darwin meant.


In his research as a biochemist, Behe has examined the flagellum, a whip-like structure which single-celled creatures use to move themselves around. The flagellum is very complex and has several working parts. Behe claims that the flagellum is irreducibly complex. Since no single part of the flagellum would have any function at all, Behe claims it could not have evolved in gradual steps, since it would have no function until all of the parts were together. Behe claims it qualifies as the type of structure Darwin said would disprove his theory.

Proponents of evolution have attacked Behe's arguments from a variety of angles. From NewScientist, we read the following:

The best studied flagellum, of the E. coli bacterium, contains around 40 different kinds of proteins. Only 23 of these proteins, however, are common to all the other bacterial flagella studied so far. Either a “designer” created thousands of variants on the flagellum or, contrary to creationist claims, it is possible to make considerable changes to the machinery without mucking it up. What’s more, of these 23 proteins, it turns out that just two are unique to flagella. The others all closely resemble proteins that carry out other functions in the cell. This means that the vast majority of the components needed to make a flagellum might already have been present in bacteria before this structure appeared.

Now, this may be a fair criticism of Behe's claims. People on both sides of the debate could argue their points – which is how science is supposed to work. However, in their zeal to protect their theory, NewScientist overplays its hand and reveals the true attitude of the folks on their side. They will never accept that any structure is irreducibly complex. I direct your attention to the last few paragraphs of the article (bold added):

[T]he fact that today’s biologists cannot provide a definitive account of how every single structure or organism evolved proves nothing about design versus evolution. Biology is still in its infancy, and even when our understanding of life and its history is far more complete, our ability to reconstruct what happened billions of years ago will still be limited. Think of a stone archway: hundreds of years after the event, how do you prove how it was built? It might not be possible to prove that the builders used wooden scaffolding to support the arch when it was built, but this does not mean they levitated the stone blocks into place. In such cases Orgel’s Second Rule should be kept in mind: “Evolution is cleverer than you are.”

In other words, no structure, no matter how complex, no matter how many parts have to be present before the structure works, and no matter that none of the parts could serve in any other function that we can determine, will ever serve to satisfy this test of the theory. Even if we cannot imagine how some structure evolved, it has no bearing on whether it evolved because “evolution” found a way we can't think of. So, while Darwin and I think this would be a way to potentially falsify his theory, it's more of an exercise in futility because evolutionists can resort to “we just don't know how it happened.” They always have; they always will.

J.B.S. Haldane famously stated that "fossil rabbits in the Precambrian" would disprove evolution - and this has been a talking point in philosophy of science for some time.

The Cambrian Period is a geological era believed by scientists to have occurred around 540 million years ago. Cambrian strata is remarkable for its abundance of diverse fossils whereas, strata below the Cambrian - aka “Precambrian” - are largely empty of fossils. The sudden appearance of fossils representing so many diverse animal phyla is so startling, many people have used the term “Cambrian explosion” to describe it.

According to evolutionary theory, life began as “simple,” single-celled creatures which gradually became more complex over millions of years. Rock layers are also laid down gradually, over millions of years, and so the fossils found in each rock layer create a sort of snap shot of life on earth at the time the layer was laid down. The earliest and “simplest” life forms should be lower down in the geological column. The more recent and more evolved life formed should be higher up. Precambrian rocks, therefore, should only have fossils of the earliest and simplest creatures.

When asked what might falsify evolution, a British-Indian scientist, named J.B.S. Haldane, famously quipped, “rabbits in the Precambrian.” His point was that, since rabbits are believed to have evolved relatively recently, finding rabbit fossils with the earliest life forms would be problematic for the theory. Richard Dawkins echoed a similar sentiment when he said, “Evolution could so easily be disproved if just a single fossil turned up in the wrong date order” (lie #1 from my list of lies evolutionists tell).

I agree that such a discovery would be extremely damaging to the theory of evolution. However, it's somewhat unlikely that such a discovery will be made. I believe the sequence of fossils better indicates where a creature lived/died rather than when. Think about it. If a deluge of water and mud suddenly buried everything, here's what I think we'd find: bottom dwelling marine animals would be buried first, then swimming animals, then amphibious animals, then reptiles and birds and mammals at the top. Well, that is sort of what we find. I say “sort of” because even terrestrial fossils are always found in layers with marine animals. I would not expect to find rabbits being buried with creatures at the bottom of the ocean.

Even though it's not probable that the Flood would bury rabbits with trilobites, it's not entirely impossible and so, once again, I think this is a fair test of the theory. Of course, it doesn't just apply to rabbits; any, grossly “out of order” fossils should be evidence against evolution. Dawkins said even “a single fossil” could disprove the theory if it “turned up in the wrong date order.” Unfortunately, he doesn't mean it. We routinely find fossils in places we didn't think they'd be. Just do a google search on the term, “fossil rethink evolution” and you'll find plenty of examples. So even though there have been thousands of out-of-order fossils found over the past few decades, I haven't seen any headline that say any one of them have disproved evolution.

Saying out of order fossils would disprove evolution, when so many have already been found, shows this isn't a serious test but it mere posturing. Even RW, in the same paragraph, hedges its bet just in case something like a Precambrian rabbit is every found. From the article we read this:

The simple truth is that a single strange fossil would probably not make much difference. In practice, the evidence in the fossil record which supports evolution is so overwhelming that a single fossil would be regarded as curious certainly, but compared to the mountain of evidence in favor of evolution it would probably be regarded as an anomaly while more data was awaited... However, the existence of entire groups of anomalous fossils would be a different thing — Haldane did say rabbits after all. Again, in practice an effort would initially be made to fit the new data into the existing framework — this is not cheating but simply the way science works. But still, in principle some quite major revisions to the theory may be needed to explain them. Such a situation would not immediately and conclusively prove a special creation over a naturalistic evolution.

So... what are you saying, RW? That not even rabbits in the Precambrian would conclusive disprove evolution? Yeah, that's what I thought you were saying.

If you googled the phrase, “new discovery rewrites evolution,” you would find a mile long list of articles describing times researchers have found some new thing that causes them to completely change how they understood some part of evolution. Yet even though they were shown to be so wrong about something they thought they knew about evolution, no discovery causes mainstream science to ever question the theory itself. It's always more like, “We didn't understand how this thing evolved,” rather than “Now we're not sure if evolution happened at all.”

Since failed predictions are usually considered evidence against a theory, frustrated creationists have asked what type of discovery it would take to falsify evolution. Any scientific theory should be predictive and falsifiable but the theory of evolution seems unaffected by any amount of contrary evidence.

There you have it, folks. RW's entire list of possible ways evolution might be falsified is nothing more than smoke and mirrors. There is nothing predictive or falsifiable about evolution. It is a worthless theory and not relevant to any other field of science. It is propped up only by psuedo-science and the willingness of sinful, rebellious people to believe a lie. I know that no amount of evidence will persuade them. At the very least, I hope the realization that what they believe is nothing more than a blind faith might soften their stubbornness.

Read the entire series:

4 comments:

Steven J. said...

In other words, no structure, no matter how complex, no matter how many parts have to be present before the structure works, and no matter that none of the parts could serve in any other function that we can determine, will ever serve to satisfy this test of the theory.

Complexity, by itself, is not an argument for design. Indeed, as William Paley noted, an omnipotent Creator has no obvious reason to resort to complex designs: humans make things complicated because we know no way to make a simpler thing perform a task, but omnipotence could bestow sentience, motility, senses, and the ability to manipulate objects on a mud puddle or a rock. "Specified complexity" (what Paley called "contrivance") is always, in our experience, a mark of a constrained, finite designer.

Behe's original argument for "irreducible complexity" deliberately ignored the possibility of components having other functions; he apparently assumed that a molecular structure must serve the same functions throughout its existence, and so must all its components. You don't need all the parts if a precursor structure has some different function (at the Kitzmiller trial in Dover, Ken Miller twitted Michael Behe by wearing the spring portion of a mousetrap, minus the board and the holding bar, as a tie clip).

Our inability to think of another function for a molecule is, indeed, a demonstration of our limits, not the molecule's, but again, Behe's argument deliberately ignores the possibility of a mutation modifying a protein so that it does something different, rather than just mutations (presumably through gene duplication and subsequent mutation of the duplicate gene) that just add new proteins. Several components of the bacterial flagellum, for example, do have other functions in the cell (as do, e.g. the opsins in our eyes).

Intelligent Design proponents are making a positive claim, here: that they know that mutation and natural selection cannot produce certain structures. The burden of proof is reasonably on them to demonstrate this, not simply to elicit admissions that "we don't know everything" from evolutionists. They're specifically claiming that they're not advancing a "god of the gaps" argument, so it's not useful for them to whine about gaps.

Steven J. said...

His point was that, since rabbits are believed to have evolved relatively recently, finding rabbit fossils with the earliest life forms would be problematic for the theory.

His point was that rabbits are placental mammals. Finding them earlier in the fossil record than any mammal, or earlier than any synapsid, or earlier than any amniote, would contradict the entire rest of the fossil record. Frank Gee, in a contrarian mood, has argued that the entire fossil record might be wrong -- that given its incompleteness, we aren't justified in assuming that there weren't placental mammals in the Ediacaran -- but that's the equivalent of betting the rent money on the mega-millions lottery.

Anyway, it's not that rabbits themselves have evolved recently. The oldest known rabbit-like fossils date from the Eocene, at a bit more than fifty million years ago. Finding one twenty million years older would be surprising but not shocking; molecular dating implies that not only were placental mammals around back then, but the ancestors of rabbits had already separated from the ancestors of, say, you and me. Finding fossils of any placental mammal in the Jurassic would be shocking; that's about the time when the line leading to placental mammals separated from that leading to marsupials (near the juncture point is the early therian Juramaia.

Finding placental mammals earlier than the Jurassic would make us wonder where all the fossil mammals that should have been its ancestors and cousins were.

We routinely find fossils in places we didn't think they'd be. Just do a google search on the term, “fossil rethink evolution” and you'll find plenty of examples.

Sure. We find that particular lineages had survived longer than we had previously thought. Take modern coelacanths (though they're not fossils). Indeed, there are no fossils known of the modern coelacanth genus Latimeria; it's no more an "out of place" animal than its ancestors in the Cretaceous were, even though there were coelacanths (of different genera and species from the Cretaceous or modern ones) around in the Devonian more than three million centuries earlier.

Or we find that some particular group had evolved earlier than we thought (but not before its direct and collateral ancestors had existed). Finding that tetrapods with actual legs predated Tiktaalik doesn't mean that they predated lobe-finned fish as a group. Finding dolphins (or ichthyosaurs) earlier than Tiktaalik would be devastating, as nothing resembling a reptile, or even a basal amniote, had shown up in the fossil record yet.

Oh, and headlines tend to work on the clickbait principle; no one is going to write a story headlined "fossil forces scientists to slightly tweak conventional understanding," even though that would be the most honest way to headline most of these stories.

Steven J. said...

If a deluge of water and mud suddenly buried everything, here's what I think we'd find: bottom dwelling marine animals would be buried first, then swimming animals, then amphibious animals, then reptiles and birds and mammals at the top. Well, that is sort of what we find. I say “sort of” because even terrestrial fossils are always found in layers with marine animals. I would not expect to find rabbits being buried with creatures at the bottom of the ocean.

This is the "differential mobility" explanation of the geological column, or, as I like to call it, the "grass runs faster than Allosaurus" explanation.

You do understand that "Precambrian rabbit" is a metonymy? It applies equally to "Precambrian catfish." Or, for that matter, to "Mesozoic dolphin." Whales, in the modern world, occupy a variety of niches and watery environments, from river dolphins to baleen whales. It appears the same was true of ichthyosaurs, and plesiosaurs, and mososaurs. So why do we find the last three together, but never with cetaceans? If modern placental mammals and dinosaurs lived at the same time, and mammals, again, occupy niches in well-nigh every environment on Earth, why don't we find bear fossils alongside dromeosaurs, or elephants alongside sauropods, or at least some modern large mammals along non-bird dinosaurs?

There are bottom-dwelling fish living in ecologies today, but there's a distinct paucity of Cambrian flounders. The Mesozoic isn't just an "age of reptiles;" it's equally an "age of fish," an "age of insects," even "an age of rather homely, ungainly primitive mammals." It has its own bottom-dwelling marine life, its own amphibians, etc., and they aren't identical to those of different periods and eras.

RKBentley said...

Steven J,

Concerning Darwin's, Behe's, and RW's claim that structures which could not have evolved in gradual increments would disprove the entire theory, I agreed this was a fair test. You seem to agree too. However, you ignored my point that it is virtually impossible to actually apply this test to any structure. The last resort of evolutionists when confronted with this type of criticism is always to say what you've essentially said: “it happened – we just don't know how.” If you are always allowed to say the parts of an irreducibly complex structure were all simultaneously commandeered from other systems without presenting any plausible pathway of how such a thing might have happened, then of what use is this test?

To the next point, I agree with you that some headlines exaggerate the significance of a find in order to put a little sizzle on the steak. However, that certainly can't be said of every fossil discovery unless you believe that no sensational find has been made in the last 50 years or so. A 1995 NY Times article, for example, says ants were once thought to have exploded on the scene about 50 million years ago but a (then) new find showed they were already around with the dinosaurs about 90 million years ago. Today, Wiki says ants evolved from wasp-like creatures about 140 million years ago. So if pushing the age of ants back 3 fold is “tweaking” the theory, what happens when some other find puts it at 200 million years? Does it have to be pushed back all the way to the Precambrian before it's considered a real problem for the theory? But it doesn't matter if that ever happens because I remind you that, even though RW said this is a test of evolution, at the end of the day, they said it really isn't. In their own words, they said, “Again, in practice an effort would initially be made to fit the new data into the existing framework — this is not cheating but simply the way science works. But still, in principle some quite major revisions to the theory may be needed to explain them. Such a situation would NOT immediately and conclusively prove a special creation over a naturalistic evolution.”

Ants, rabbits, or any other grossly out of order fossil found in the Precambrian would at first try to be worked into the theory. If that fails, it will probably be disregarded as an anomaly. That's not my opinion.

Thanks for your comments. God bless!!

RKBentley