Tuesday, 5 July 2016

Three types of creationist arguments

These types of arguments might be common in many fields but creationist/evolutionist discussion is where I spend my leisure time so that's where I know they are.

"Find a few pieces of evidence that fit your argument
and ignore all the others."
I've seen this image many times.  I saved the above from Twitter but when I searched for "the data how scientists see it how creationists see it", this was the first result. No idea who to properly attribute it to.
The best example of this type of argument for me is Carl Wielands's Glacier Girl article that shows how snow falls rapidly on the coast of Greenland so inland Greenland's ice sheets are young. In doing so, he ignores - and does not offer locations -the fact that the two locations are hundreds of kilometers apart and in different climatic zones.  He also ignores all the ways the ice core layer ages are confirmed - two layers=one year, volcanic ash deposits match historic eruptions, isotope ratios...
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"We can't trust the experts!"
This argument definitely crosses borders.  I was reminded of it on Twitter by arguments over Brexit.

The link goes to: Britain's greatest enemy, the experts
In creationism circles, this argument often displays itself in strawmen arguments. but it also a common place to find lists of supposedly unanswerable questions.
This claim is made about the eye in various forms (the claim is given in various forms, the different forms of eyes is usually ignored). From Harun Yunha
For an eye to be able to see, the 40 or so basic components which make it up need to be present at the same time and work together perfectly. The lens is only one of these. If all the other components, such as the cornea, iris, pupil, retina, and eye muscles, are all present and functioning properly, but just the eyelid is missing, then the eye will shortly incur serious damage and cease to carry out its function. In the same way, if all the subsystems exist but tear production ceases, then the eye will dry up and go blind within a few hours.
The theory of evolution's claim of "reducibility" loses all meaning in the face of the complex structure of the eye. The reason is that, in order for the eye to function, all its parts need to be present at the same time. It is impossible, of course, for the mechanisms of natural selection and mutation to give rise to the eye's dozens of different subsystems when they can confer no advantage right up until the last stage.
An expert, even an interesed bystander, will see the problem. Fish, some amphibians and some reptiles don't have eyelids.  Clearly the specific example given is one of poor research and eyes are not irreducibly complex.

I spent ten minutes looking for this argument in the form of a list of fifteen or so questions for students to ask their biology teachers.  The question about eyes had, probably not 40 parts, but ten or so. It went something like, "5 Eyes need to be fully formed to work. a) When did the nerve to the eye form? b) When did the eyelids form? c) When did the cornea form?.... x)What did the animal with half formed eyes do?"  Couldn't find it.

I guess the "Why are there still apes?" attempt at a stumper question fits here, too.
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We don't know, therefore Creationism
Or in this case, therefore Intelligent Design:
...none of them have the slightest clue as to how it actually happened, and (B) The obvious and most significant conclusion that can be drawn from all their splendid work in the lab is that the only reasonable explanation for the emergence of life is Intelligent Design!

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Are there arguments that fall outside these categories?

Sunday, 3 July 2016

Something for all those creationists to remember!

Hey, you stupid creationists, the 'Other Side' isn't dumb!

When will those frickin' idiots learn?

Alright, on the off chance you didn't follow the link, it goes to a general article describing 'the other' in any argument and so the lessons it offers are presumably just as applicable to evolutionists.
*

As any debate club veteran knows, if you can’t make your opponent’s point for them, you don’t truly grasp the issue. We can bemoan political gridlock and a divisive media all we want. But we won’t truly progress as individuals until we make an honest effort to understand those that are not like us. And you won’t convince anyone to feel the way you do if you don’t respect their position and opinions.
I think this paragraph makes a big jump from "understand" to "respect".  I try to understand various arguments for creationism and to respect the individual but I don't see that every argument automatically deserves respect. As a blogger who has deliberately focused on creationism's worst (but common) arguments, I see the ones displaying the least amount of research.

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*Image is shrunk a little. More of Tom Gauld's work can be found here.

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Friday, 17 June 2016

Darwin and particle physics

Darwin had little or nothing to do with particle physics but some of his conclusions inspired at least one physicist.  From Reciprocity Blog, Has Evolution been proven?
It's a little-known fact that the earliest objections to Darwin's work didn't come from the religious, it came from a different quarter entirely, and a surprising one at that: Physicists.

The big problem was that, since Newton, it was thought that the universe was just like a big clockwork machine. Pierre-Simon Laplace famously stated that, with Newton's work, all we needed to know was the position and velocity of every particle in the universe and we could predict with perfect accuracy any past or future state.
This is now known as Laplacian determinism. All the physicists of Darwin's day were Laplacian determinists. They couldn't countenance the idea that there were random elements at play in the universe. But what do we actually mean by random here?

Random, in the way that I employ it, and in the way that it arises in evolutionary theory, means 'statistically independent'. It does not mean, as some suppose 'uncaused'. It simply means that, of a range of possible outcomes, any one outcome is statistically as probable as any other outcome.
To give a concrete example of something random, we can look at the decay of a single atom. The moment of decay of, say, an atom of caesium, is entirely random. It can happen any time from the moment the atom first arises to the heat-death of the universe. There's absolutely no way to predict when it will decay. Each of those moments, and thus the time of decay, is statistically independent.
So, Darwin had introduced the random and the probabilistic, and the physicists weren't too happy about it. Ludwig Boltzmann, father of thermodynamics, cites Darwin as one of his major influences in the formulation of statistical mechanics, and describes him, having laid the groundwork that would ultimately result in quantum mechanics, as the greatest physicist of the 19th century.
By the way, the blogger feels that evolution has been proven, at least in a 'beyond a reasonable doubt' way.

Sunday, 15 May 2016

AiG's Dr Boyd on birds

Via the Sensuous Curmudgeon, I learned that AiG has worked to clarify its position on kinds. To be maximally sympathetic to creationists, lots of mainstream classification terms are ambiguous or difficult to rigorously pin down. Are lions and tigers two different species? Dogs, wolves and coyotes comprise one, two or three species?  When we look at modern extant animals, it is pretty easy to see different orders or classes. Mammals are clearly different from birds.  Songbirds are clearly not raptors. Rabbits are ....not all the clearly different from rodents ? It's definitely messy.

The YEC term, 'kind', is even messier. Humans are the only member of our kind. Some creationists limit 'kind' to mean species, or very nearly that and almost never reaching the level of genus.  AiG accepts 'family' as kind. They accept all felines -house cats to sabre tooth tigers and all in between - as one kind.

This is probably a good time for a refresher on Linnaeus's classification chart. Image from desire to learn (and shrunk slightly. To see it full size, follow the link):


Wikipedia lists the orders of birds here.

Now let's dig into Dr Boyd's article: Bird Speciation from the Flood to the present.
In Genesis 6:1–20 we read that Noah was commanded to take two of every animal kind into the Ark. Verse 20 makes clear that those animals would include two of every kind of bird. Later, God clarified that seven individuals of the clean animals, including some birds, would be on the Ark (Genesis 7:2–3). Does that mean that Noah had two (or seven) of all 10,380 extant bird species (more if you count extinct species)? If a biblical kind and a species were equivalent, then yes. But they are not the same; many species are categorized under each biblical kind.
Already we run into trouble. He does introduce the concept Kind is Bigger than Species, but he apparently misquotes the Bible. Hmmm. A bit of Googling tells me this is a messy translation problem.  Some translations specify seven pairs, others just seven but add "male and his female". It isn't relevant to this discussion but God didn't say seven individuals of clean animals, but seven pairs. Boyd links to NKJV which states, "You shall take with you seven each of every dclean animal, a male and his female" which is terrible math.  My partial apologies to Dr Boyd; some copies of the Bible agree with his quote.
...where did all these different species of terrestrial animals that we see today come from? For our consideration here, we are going to narrow the question to, where did all these bird species that we see today come from?
I often claim that Creationists try to use big sweeping statements to hide local flaws so I am grateful for his attempt to narrow things down.

Boyd graciously links to an article detailing the current evolutionary position, that birds evolved and radiated from South America.  The full text of this article available online. I might discuss it in a later post.
Scientists who accept the biblical account of creation and the worldwide Flood compile evidence from Scripture, genetics, the fossil record, hybridization data, and morphological characteristics to suggest that God created many kinds of birds that began radiating and diversifying over the world after the worldwide Flood destroyed the earth about 4,500 years ago. These birds included both flying and non-flying birds. The two answers given by evolutionary scientists and creation scientists are so far apart from one another that it seems almost impossible to think that they are looking at the same data.
I continue to admire his clarity and respect for the evolutionary position.
A scientist with a materialistic worldview has to account for the first bird; it would have to be the ancestor of all birds. Models of speciation and radiation for events like that would need millions of years.

A scientist with a biblical worldview has to account for the different species of birds found today in each created bird kind from the Flood to the present. Models of speciation and radiation for those events would only need thousands of years.
Boyd links to  AiG's Dr Jean Lightner's study on avian kinds.  I plan to read it but have not yet.(I have now read it and the article consists only of conclusions- "There are the 196 kinds" without much detail)  Boyd describes Lightner's work as suggesting just under two hundred kinds leading to the current 10,000+ species of bird. Such a number could be reached, he works out, if each of the two hundred original species doubled every 750 years and this happened six times (200-400-800-1600-3200-6400-12800).  He then points out an obvious problem. There are only four species of Anhinga but 1,470 species of what he calls "sparrow/finch" kind (or Passeroidea). Clearly, there are challenges even with his suggested rate of new species every 750 years. Also, 750 X six is forty-five hundred years, which I think is a little long for him. (Huh. This link to AiG says that the Flood occurred around that time, giving an estimate of about 4400 years ago.)

He discusses the problems with the term 'species' and we agree.
Robins produce more robins. Bluebirds produce bluebirds. Could a male robin and a female bluebird produce a hybrid like a bluebin? No, they are different biological species. Some birds like the mallard duck and the American black duck are considered different species, but they can mate and produce offspring (unoriginally, they are called the mallard X American black duck hybrid). Does that mean that they are just one species and not two? Not really (though it does depend on who you ask), because the hybrid duck is rare, and most often a mallard mates with a mallard to get more mallards. (When a bird watcher sees a hybrid, he might get either a little too excited or just confused because what he sees does not quite match any pictures in his bird guide.)
He uses bluebirds as an example and finishes with:
However, the ranges of these two species of bluebirds overlap only in a narrow band from West Texas northward—the hybrid zone. Most eastern bluebirds would never even come in contact with a western bluebird because their habitats don’t overlap very much. Because they are from the same bird kind and are obviously very similar (in both appearance and genetics) we can see that they are in the final stages of speciation. Most people believe that they are different enough to call them two separate species. If we include the western bluebird, which also can hybridize with these two species,10 it means that one species is in the final process of a triplet speciation event.
The introduction is over and now we get into the problem  (I've decided to add bolding as I go):
To some people, what I just described sounds too much like evolution. The evolutionary process definitely includes the idea of speciation, but the formation of species in response to geographic (or habitat) differences is consistent with a biblical worldview. Having over 10,000 different species of birds (not to mention mammals, reptiles, and amphibians), especially two of every kind and seven of the clean animals (many of the birds), would have been too much for Noah and his family to care for—not to mention house. The efforts of those involved with the Ark Encounter are providing us with realistic figures about the number of animals on the Ark. Having two of every bird kind and seven of every clean bird kind fits nicely.11
I would suggest, he add "as well as the evolutionary view" to my bolded part.
I note he leaves out dinosaurs from his list. A quick Googling doesn't offer a good (and simple enough for my purposes) list of orders or families for dinosaurs but there were a lot of them.
His solution:
When the birds were released from the Ark, they faced a new environment with quickly developing habitats. Birds could migrate quickly from the location of the Ark in all directions. As they were faced with different environments, their inbuilt genetic variability allowed them to diversify and adapt to these environments, forming different populations of the same bird kind.
I don't know if he solves this problem later in his article, but he is currently leaving out the problems with kiwis here. They are small, flightless birds that currently survive only because they live on an island that historically didn't have predatory mammals on it.  As an evolution proponent I accept that a bird flew to New Zealand millions of years ago and evolved into the kiwi, but that sure looks like a big change of Biblical kind to me.  This simple discussion of kiwi evolution didn't clear things up for me.  Anyway, we are also looking at penguins.  They and ratites like the ostrich and the before mentioned kiwis, only live in the southern hemisphere. This is hard to explain if the original members of the kind began in the northern hemisphere.

The end came suddenly.  Here is an excerpt from the final paragraph:
Evolutionary scientists argue for one ancestor to all flying birds—a descendant of the dinosaurs (that means if you are consistent with the evolutionary worldview, by the way, that birds are reptiles). Creation scientists argue for many different bird kinds that could fly from their creation on Day Four, as Genesis 1 clearly describes.
It sure appears that he ran away from the Passeroidea problem. If we look at a single species of the passeroidea kind and double it until we get to around 1400 species, we need


Boyd offered 750 years, as an average but seems to have pointed out that some kinds would need to evolve faster.  The problem is, we've seen most or all of these birds and known of them for four hundred plus years.  The biggest problem with AiG's conception of micro-evolution is the outlandishly high speed they need. This means that when creationists ask, "Why don't we see evolution happening today?" they are sabotaging their own position. To defend their point here, they paradoxically need to show new species of birds that have evolved and appeared since the 1600s.

Saturday, 30 April 2016

irreducible complexity takes a hit.

This is seven years old but it is important to note that when Dr Behe used the blood clotting system as an example of irreducible complexity, he was mostly depending on God of the Gaps. Step by Step evolution of blood coagulation.
As for vertebrates, although the jawless fish have genes for generating the thrombin-catalyzed conversion of fibrinogen to fibrin, they lack several clotting factors, including two thought to be essential for the activation of thrombin in mammals. Fish in general lack genes for the "contact factor" proteases, the predecessor forms of which make their first appearance in tetrapods. The full complement of factors known to be operating in humans does not occur until pouched marsupials (opossum), at least one key factor still absent in egg-laying mammals such as platypus.
Via Pharyngula, uh, via csicop.

Behe's other example, the flagellum of certain bacteria, has also taken a beating since the Dover Trial.

Darwinism Refuted tells us*:
The complicated structure of the bacterial flagellum is sufficient all by itself to demolish the theory of evolution, since the flagellum has an irreducibly complex structure. If one single molecule in this fabulously complex structure were to disappear, or become defective, the flagellum would neither work nor be of any use to the bacterium. The flagellum must have been working perfectly from the first moment of its existence. This fact again reveals the nonsense in the theory of evolution's assertion of "step by step development." In fact, not one evolutionary biologist has so far succeeded in explaining the origin of the bacterial flagellum although a few tried to do so.
DR is correct in that no one has described step-by-step evolution of the flagellum.  Molecules don't leave much in the way of fossils so there is no trail heading back.  If someone walks across a muddy field, we expect footprints and similar evidence.  If someone swims a similar distance, no one expects to evidence of such a thing.
DR is incorrect in stating, "If one single molecule in this fabulously complex structure were to disappear, or become defective, the flagellum would neither work nor be of any use to the bacterium."

Nick Matzke at Panda's Thumb shows that many molecules can be removed. A screenshot of only some of the proteins involved and how necessary they are:

He summarizes with:
Total number of proteins listed: 42
(this table excludes the chemotaxis proteins; there are ~10 chemotaxis proteins in standard E. coli, but the number can range from 0 to 10+ in various bacteria)
Total number thought to be indispensable in modern flagella: 23 (55%)
If you noted that 55% is still pretty high, I agree.  Still, 45% is plenty reducible.

More at Panda's Thumb:
The relevance to flagellum evolution? Variants of at least seven T3SS proteins are also found in the flagellum, within a subsystem called the protein export system. This sits within the basal body and funnels replacement flagellin subunits to the filament, using a mechanism remarkably similar to the T3SS. In fact, the two systems are so similar that the flagellar protein export system is now considered to be a subclass of the T3SS (Trends in Microbiology, vol 14, p 157).
Such similarities, or “homologies”, are strong evidence that the two systems evolved from a common ancestor - analogous to the way that the arrangement of bones in the limbs of horses, bats and whales reveal their common ancestry despite their very different outward appearance and function. Similar homologies can be seen in the DNA sequences of genes, and in the amino acid sequences and 3D structures of proteins - all are clear evidence of shared descent.
A good video of the evidence.

Ken Miller - quoted in the video above - discusses the subject at his website.

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* Defeating Darwinism also considers the eye an example of irreducible complexity:
For an eye to be able to see, the 40 or so basic components which make it up need to be present at the same time and work together perfectly. The lens is only one of these. If all the other components, such as the cornea, iris, pupil, retina, and eye muscles, are all present and functioning properly, but just the eyelid is missing, then the eye will shortly incur serious damage and cease to carry out its function.
DR seems unaware of all the animals that exist without eyelids.  Someone should tell them about fish, lizards and snakes.

Wednesday, 13 April 2016

Evidence for evolution, an overview

There is no proving in science. Below I am offering evidence or support for evolution.  No single point 'proves' the theory of evolution but they all support it.  At the end of this essay, I will offer an explanation for gaps in the evidence.

Evidence for evolution:

 "In Linnaeus's original system, genera were grouped into orders, orders into classes, and classes into kingdoms. Thus the kingdom Animalia contained the class Vertebrata, which contained the order Primates, which contained the genus Homo with the species sapiens -- humanity. Later biologists added additional ranks between these to express additional levels of similarity."

Linnaeus was not an evolution proponent, having died eighty years before Darwin publicized his theory.  But his classification system offers great support for the theory of evolution and a universal common ancestor. A designer who made every species as one-offs, with no required connection to each other would not have included such similarities. Sure, in the smaller classification levels - Genus or maybe Family - two animals that live in similar ways can be expected to look similar.  This explanation falls apart at the higher levels,though.  Fish and cephalopods both live in the ocean, at a wide variety of depths. They are both cold-blooded although their bloods are very different.  Of interest here, we mammals, and all vertebrates all share the same kind of eye as fish while squid, which live in the same conditions as fish, have a different architecture for their eyes.
Some creationists want to see "Croco-ducks" or "Fronkeys" (frog-monkeys).  It is possible that a creator could have made such things but they would destroy the theory of evolution because attributes specific to different classifications would be mixed.

Recent additions and descriptions of the Tree of Life
"The tree of life is one of the most important organizing principles in biology," said Jill Banfield, a UC Berkeley professor of earth and planetary science and environmental science, policy and management. "The new depiction will be of use not only to biologists who study microbial ecology, but also biochemists searching for novel genes and researchers studying evolution and earth history."
As the Sensuous Curmudgeon says
But we can’t help wondering what people like ol’ Hambo [Ken Ham of AiG] make of this. Did all those species somehow appear in the 4,000 years since Noah’s Flood? Why does every species — including our own — fit into its proper place in this one hierarchy — as if they were all related? Why aren’t there any unique outliers that don’t fit anywhere?
The Daily Mail has a great slideshow. After finding the best images I could, I have -as usual- shrank them a little.  If you want to see them full size, follow the link.
 In the image above, you can see Animalia, which includes us, at the top right-hand side.  Note the whole tree above is the small, narrow set of branches on the bottom of the image below.  Animalia is not a large part of life's diversity - it includes us but it not therefore a prominent group.

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Fossils

Fossils offer two forms of support for evolution. First, various groups of fossils are always linked and found together and these groups always exclude other fossils.  Humans are never found with dinosaurs and rabbits are never found in the Cambrian.
Second, transitional fossils are only snapshots in time and have limited value, but they do show that a transition from fish to amphibian is at least possible.  When a creationist claims there is no way  fish could evolve into land animals "How would it walk? How would it breathe? It's impossible!" these transitions -and there are a great set of seven transitions from fish to amphibian - show it is at least possible.  They don't prove a universal ancestor but they do show it is possible.
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Bio-geography: As Pope John Paul II wrote, "The convergence, neither sought nor fabricated, of the results of work that was conducted independently is in itself a significant argument in favour of this theory."  The very distribution of animals on the Earth supports the Theory of evolution.  This is a convergence of age of the Earth, plate tectonics and evolution.  This support also specifcally argues against the view some creationists hold of a Global Flood and resettlement of the Earth originating from the Middle East or Turkey.
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"Charles Darwin was familiar with the concept of vestigial structures, though the term for them did not yet exist. He listed a number of them in The Descent of Man, including the muscles of the ear, wisdom teeth, the appendix, the tail bone, body hair, and the semilunar fold in the corner of the eye. Darwin also noted, in On the Origin of Species, that a vestigial structure could be useless for its primary function, but still retain secondary anatomical roles: "An organ serving for two purposes, may become rudimentary or utterly aborted for one, even the more important purpose, and remain perfectly efficient for the other.... [A]n organ may become rudimentary for its proper purpose, and be used for a distinct object."[8]"

Cave Fish are a great example - some are blind and appear to have no eyes, but in fact have eyes that are overgrown by flesh and skin.  This would seem to show they are a new species that originated from one that had functioning eyes.  It would be hugely difficult to suggest that the Designer accidentally included them in building this specific animal.  Again, this does not 'prove' there was no Designer or 'prove' evolution true, but evolution and the generation of new species has to be seen as the most reasonable explanation.

From AiG:
"The Definition of Vestigial Organs Has Been Changed
As the list of “functionless” organs has grown smaller and smaller with advancing knowledge, the definition of vestigial organs has been modified to include those whose functions are claimed to have “changed” to serve different functions. But such a definition removes the burden of proof that vestigial organs are a vestige of evolution. Thus, the evolutionist might concede that the human coccyx (“tail bone”) does indeed serve an important function in anchoring the pelvic diaphragm—but still insist, without evidence, that it was once used by our ancestors as a tail."
This has to be seen as dishonest as Darwin himself stated that secondary functions are possible.  If the originator of the theory specified this in his definition, it cannot be said to have changed.
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DNA

I have not dug into the arguments whether chimps and humans share 98% of our DNA.  Creationists seem to suggest that all English books use a lot of 'e's so stating that two separate books both have more 'e's than any other letter is silly. I would agree with this simple statement but I don't think geneticists use such a simple argument.  I haven't bothered to look.
However, we do share inserted viral DNA in ways that best support a common ancestor.  Also, we have 23 pairs of chromosomes and chimps have 24.  The thing is, we have a chromosome pair that shows two pairs got stuck together in historic times.  This does not mean that we share an ancestor with chimps, but offers support.
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Gaps in the evidence

We will never have the entire picture.  We will never have the original cell that evolved into all life as we see it today.  We do have hundreds or thousands of arrows all pointing to the same place so we don't need an 'X' to mark the spot.

Why are we lacking in evidence?
Fossils: There were 5 billion passenger pigeons alive at one time.  We have zero fossils of them.  There are a few hundred thousand chimpanzees alive now and probably more in times past.  We have fossils of fewer than ten individuals.  There are places near the border between Eastern Canada and the US where the tides are phenomenally fast.  Paleontologists go out at low tide and try to recover some fossils, working quickly because they know the next cycle of tide will wear them away to nothing -and display new ones.
As chimps and passenger pigeons show, few animals actually fossilize.  As the tidal rocks show, many fossils are destroyed before they are ever seen.
With organic chemicals, the traces or fossils are even less enduring.  We don't know how a bacterial flagellum evolved and don't know what every individual step would have looked like but we do have a halfway point.
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More than enough evidence points to the Theory of Evolution and none contradicts it.

Friday, 8 April 2016

Essay on Quora

I've been spending way too much time on Quora these days, but I think my writing has improved as a result.  I'm sure Quora has an official description but I think of it as a thoughtful Yahoo Answers! or the like.  In my writing there, I have tried to explain things clearly and sympathetically to the person asking the question and those with similar questions.

I wrote 'sympathetically' because I spent most of my time answering questions about evolution and i try to imagine the (entirely anonymous) questioner as seriously asking and willing to learn.  That is not always the case away from Quora and admit with embarrassment that my responses have gotten hot and sometimes even rude.
I am one of the top ten answerers, as voted by readers, in Evolution (process) and am quite proud of the fact.  Here is my top essay there:




Again, please stay on topic without mentioning theistic arguments or involving God in the discussion. Please answer scientifically or logically... Many failed to do so in previous similar questions...



Brian Dean, science enthusiast and evolution proponent
35.6k Views • Brian is a Most Viewed Writer in Evolution (process) with 30+ answers.


There are two major or popular ways to falsify the theory of evolution. First, the famous 'rabbit in the Precambrian' fossil and second, far less famous and more recently proposed, finding two but not three or four species with a common ancestor containing the same viral DNA at the same location. I will give more detail on these points, but first I want to offer sympathy with your question.

The Theory of Evolution has changed and adapted and itself evolved over the past 160 odd years that it sure seems that nothing can falsify or disprove it. Lack of fossil evidence? ... Well, uh, Punctuated Equilibrium. Natural Selection isn't enough on its own to allow evolution of all the diversity we see? ... Well, uh, Sexual selection, Genetic Drift and Founder Effect can be used to patch over the flaw. 
More specifically, the theory of evolution somehow explains the human reproduction strategy of having few offspring and caring for them nearly forever and the salmon strategy of having thousands of eggs and not caring for them at all. (Note these are termed K- and r- selected strategies are are well explained here: K and r reproductive strategies
Here I will say remind readers that I am an evolution proponent and described the above difficulties with acceptance of the theory as examples. Punc Eek does explain the fossil record pretty well, for example. 
The problem for evolution is that there are so many different strategies for success. Just as the US Navy does not use aircraft carriers exclusively, but rather a wide variety of craft suited to different purposes, small, simple living things succeed in situations where larger, more complex living things do not, and vice versa. 
Further, the asteroid impact that killed the dinosaurs and made room for mammals to grow and diversify has no place in the theory. The diversity of life is a complex mess and further confusion is added by inorganic events. 
All that said, back to my two claims on how the theory of evolution could be falsified or proven wrong. 
The "Fossil rabbits in Precambrian deposits" suggestion was an offhand one made by J.B. Haldane (Wikipedia tells me this may be untrue: Precambrian rabbit ) and can be expanded to mean any mammalian fossil found in rock over 250 million years old. From that same link are some reasons why such fossils might not disprove evolution:
" The first question raised by the assertion of such a discovery would be whether thealleged "Precambrian rabbits" really were fossilized rabbits. Alternative interpretations might include incorrect identification of the "fossils", incorrect dating of the rocks, and a hoax such as the Piltdown Man was shown to be."
Still, something of this sort would cause great problems for the theory. 
The discovery that viruses can and do insert occasionally their own genetic material into Eukaryote chromosomes is relatively new. The image below is slide 17 of this lecture PPT set: Bio%201130 c%203 19%20lecture


If Chimps and Bonobos shared the same bit of viral DNA and we did not, that would be no problem for the theory but if Gorillas and chimps carried the same viral DNA and we did not, this would be a serious problem for the theory. Or, if humans and gorillas carried the viral DNA but chimps or bonobos or both did not, we would have the same problem. There is evidence -somewhere and I cannot find the link or citation - for gorillas and orangutans that share the DNA of a specific virus that we humans do not have. Further study (again, going from memory only) showed the viral DNA was on different chromosomes and although from the same type of virus were different segments (gorillas had section A of the viral DNA and orangutans has section G, while the shared ancestor DNA should be of the same section), implying that there were two separate viral DNA insertion events. 
I would suggest a third thing that would prove evolution false would be eyeless vertebrates.... wait, there's a catch. There exist eyeless fish but these cave-dwellers actually have eyes that are covered by flesh. If a mammalian species were found to have no eyes and no vestiges of ancestors with eyes or genes for eye development, this would be a huge problem for evolution. 
Finally, and I am brushing against your limit against mentioning religion here, if we ever found the creatures that some creationists think evolutionists need, that would disprove evolution hard! I am writing about the 'croco-duck' the 'Bird-dog' and the 'bull-frog' that were championed by Ray Comfort and Kirk Cameron. And also the 'frunkey', that one creationist felt should exist between frogs and monkeys. 
As a test to the asker:
"Please answer scientifically or logically... Many failed to do so in previous similar questions."
Can you link to such an example?