Tag Archives: Evolution

Is there a smooth pathway from micro-evolution to macro-evolution?

From Luke Nix. (H/T Apologetics 315)

Excerpt:

Macroevolutionary changes are a lot of microevolutionary changes, but they are in a specific series that follow a specific pathway. The missing premise in this argument is that the pathway from ancestor to claimed offspring (many generations down the road) is clear of obstacles.

In his book, “The Edge of Evolution” Michael Behe shows that scientists have observed such an obstacle in the lab. The obstacle was not time, it is in the genetic pathway that must be traversed if macroevolutionary changes are to take place in reality. Since an obstacle has been observed, we now have a false premise in the argument. Since there is a false premise, the argument fails. There is a difference between micro- and macro-evolutionary changes. A lot of microevolutionary changes are necessary for macroevolution, but they are not sufficient. The other sufficient condition (a clear genetic pathway) still has yet to be met. Since both sufficient conditions for macroevolution have not been met, it has not been demonstrated. And since changes over time has been demonstrated, there is a need to distinguish between the two. To prevent confusion about what we know to be true and what we don’t, this distinction must be made.

There is only one way that this can be overcome by the naturalist: find a pathway that would be clear by default in nature. Notice that I have added one more piece to the missing premise above: “…clear by default in nature“. I have to add that last qualification because as scientists are looking for a way to overcome this obstacle, they are introducing their own intelligence- fine-tuning the process, then “allowing nature to take its course”. Their conclusion of naturalistic macroevolution will depend on a premise that is founded on intelligence. That would undermine the whole argument for naturalistic (macro)evolution.

This is one of the ways to show that evolution is true – by showing a pathway to macro-evolutionary change in the lab. If people expect me to believe in the grandiose claims of fully naturalistic evolution through a stepwise process, then why can’t I see the pathway myself? Why do I have to take it on faith?

Related posts

Responding to an atheistic commenter on the moral argument

Here’s Joey’s original comment:

I am unconvinced by the argument that we can only have morality when there is a god, especially the christian god.

1. Moral principles have existed long before the christian or jewish god has ‘declared’ it in the bible. Look at the writings of Confucius for example.

2. As an atheist my sense of morality is based on empathy, compassion, psychology, science and logic. It is a human (and dare I say evolved) trait to want to empathise – and when I see suffering I want it stopped because it makes me feel bad. I look at science and psychology and see how we are all extremely similar to each other in our make up, and should therefore logically be treated the same by each other. And I look towards how I would want to be treated in such a situation as well – because I do not want to be defrauded, I would want to protect other people being defrauded because after all, why should I get preferential treatment if we are all equally human? There are so many basis for morality!

3. I personally find it a little odd that christians feel they are more moral because they can say that god tells them to be moral. Which would you rather prefer – someone to say to you “I love you because I do and you are amazing”, or “I love you because god tells me to”? Who would you rather be friends with, someone who says “I am not going to kill you because I find it repulsive to the core of my being”, or “I am not going to kill you because I believe god tells me not to, even though you deserve to die because of your sin”

4. That leads me to my fourth point. Morality which is solely based on god has a loophole – which is this: everything god says is wrong is wrong, unless god commands otherwise. I say this specifically because whilst as an atheist I can unashamedly say that I believe the invasion and conquest of another country and the slaughtering of all that nation’s men, women and children is morally repulsive. Christians do not have that luxury, because their moral god commanded them to do exactly that in the bible and said it was ok. Or what about this morality: David and Bathsheba sins by committing adultery and murder. Rather than punishing them for it, god punishes the little baby of theirs by killing him. Or how the bible justifies slavery. Or how the bible commands women to obey their husband but not vice versa. Justice? I would not want to place my trust on that kind of morality.

Micah’s response:

@Joey

“1. Moral principles have existed long before the christian or jewish god has ‘declared’ it in the bible. Look at the writings of Confucius for example.”

(For the sake of this post, I’m going to be framing responses by way of the Moral Argument)

The moral argument entails that it is God Himself that grounds morality, not the writings of the Bible. Taking into account even the writings of Confucius, those statements still need to be grounded by God Himself. He is the bar of morality by which we can measure such statements to be moral or virtuous or good. The argument does not even entail that we need to believe in God or that only the Bible has virtues in its text in all religious literature. The argument does not single out Christianity.

“It is a human (and dare I say evolved) trait to want to empathise”

To say that morality is a trait that you evolve means that morality is just something used to propagate the species. It’s not actually “good” in the end, just that specific interests or requirements are met in such a way as to preserve the species called “homo sapiens” and continue to pass on genes.

Beyond that, what if we rewound the clock and let evolution play out again? We may have had a different set of moral rules where, say, rape is virtuous.

Or try thinking of it this way: if aliens (who are personal and rational like ourselves) who evolved in some other star system came to Earth and started killing and raping people, would you try to appeal to your human morality? Why? These aliens have just evolved to have these morals, so you can’t say rape is wrong or planet take-over is wrong because you’d just be selfishly appealing to human morality (which again, would be for the sake of survival anyway). And to argue that we humans have the better morality than the aliens simply begs the question.

“and when I see suffering I want it stopped because it makes me feel bad.”

There are a lot of things that make us feel bad, but that isn’t an indicator of what is right and what is wrong. The soldier who nobly smothers a grenade with his body to save his comrades has that sense of dread and self-preservation about him, but to act against his feelings and his flight-or-fight responses, we can say, is a good moral sacrifice.

Or to put it another way, it makes me feel bad when my girlfriend cheated on me, therefore it seems to me clear that beating her would be the right course of action. Hey, she cheated, not me. She broke the relationship, not me. She made me feel bad!

“I look at science and psychology and see how we are all extremely similar to each other in our make up, and should therefore logically be treated the same by each other.”

I really don’t understand how it follows logically that since we’re similar, we should treat each other the same way. If you look at the business executives that sit comfortably in their lap of luxury with no worry of recourse, they don’t have to follow the golden rule. They use and abuse others and make shady deals and cut corners, all within reasonable bounds to preserve their company and their name, and live off their profits and not have to worry about the poor soul across the street that struggles to make ends meet for his family. To say that he ought to help others and not be selfish would again seriously beg the question as to what grounds morality.

In a cold, bleak universe where there is no God, and evolution reigns supreme, we’re no different than a pack of flies. We’re just a more complex collection of molecules with our brains wired for survival, self-preservation, and gene-propagation. I don’t see any reason on the atheist view to live for others or to even live a virtuous life.

And on top of that, you have the problem of the fact that morality is abstract. There is no “morality-thing” that we attend to, it’s an abstract rule or concept. Why then should we follow one set of abstract rules (i.e. – don’t steal, be charitable) and not another set (i.e. – just make sure you don’t get caught; don’t help the weak; live for yourself)? If you say that we need to follow whatever our genes say, then what of conflicting matters such as “I shouldn’t kill him” vs “I can easily get away with it and pin the blame on this other guy”? Which genes should we follow? The apparently selfish ones or the apparently virtuous ones?

“And I look towards how I would want to be treated in such a situation as well – because I do not want to be defrauded”

So morality basically comes down to mutual deceit. You don’t kill me, and I don’t kill you. That really doesn’t explain a host of moral actions, moral situations, moral vices, immoral people, etc. Especially the heroic virtue of sacrifice.

And would your statement work in reverse as well? If I gave you $20 out of my own wallet because I knew you were jobless and needed a meal to eat for lunch, would I then have moral permission to demand that you need to pay me back? I mean, I gave something up, and to be FAIR, that other person should pay me back too. Besides, I could’ve used that $20 for a “better” purpose relating to MY self-preservation and MY survival (or my family’s survival).

“I personally find it a little odd that christians feel they are more moral because they can say that god tells them to be moral.”

No, we are not more moral, you completely misrepresent Christian teachings. None of us are moral. None. No one. We are not good enough to meet God’s standards. We can only come to God as holy and righteous because people who place their faith in Christ are covered by Jesus’ righteousness. His holiness is imputed to our account; a free gift.

“Which would you rather prefer – someone to say to you “I love you because I do and you are amazing”, or “I love you because god tells me to”?”

If someone were to say the latter, then they wouldn’t be following God’s commands at all. Jesus said to love our neighbors as yourself, not “love your neighbors because I said so” This is such a gross misrepresentation and a false dichotomy of Christian virtue that a simple remedy of actually reading the New Testament would be a show stopper.

We Christians are called to seek those who are not in Christ because we have the urge to share the good news and help save those and have compassion because God had compassion for us, willing to not let any perish. God’s forgiveness is open to EVERY SINGLE PERSON ON THE PLANET, and to refuse forgiveness pretty much means to refuse being saved. The phrase often goes, “God doesn’t send people to Hell, people send themselves quite fine on their own”

Of course, if you want to insist on the position that God has given us some sort of, “love me or die” ultimatum, then you’re going to need to explain the biblical data where God selflessly gives His Son as the perfect sacrifice to cover all sins for all people, and that all we need to do on our part is to place our trust in Christ; no rituals required. You also would need to explain away the verses that say that God does not delight in the death of the wicked, or that He calls “judgment” His “strange work”. Or the verses where He pleads to Israel to turn back from their wicked ways and cries out, “Why will you die O Israel?”

If you only focus on the verses about God’s judgment and wrath (which are expressions of His perfect Justice) and block out the verses about His sacrifices, His patience, His love, and His urgings to turn back, His compassion, etc. then you are not being truthful to the whole data set, and so your position holds no water.

“everything god says is wrong is wrong, unless god commands otherwise.”

Again, you misrepresent the Christian position. God’s commandments are an expression of His morality and goodness, but His NATURE is the bar of justice and morality and goodness. Let us be clear on this, it is His nature, not His commands, that things are deemed right and wrong. This is not a “God said so, therefore, it’s right”. It’s a, “God is so, therefore, it is right”.

…And I’m not even going to get into the Old Testament because I could write 30+ pages on why you have a bad grasp on the culture of Israel and the Ancient Near East. I suppose I could copy and paste my thesis on “Does the Old Testament Sanction Slavery?”, but it’s roughly 10-11 pages, and this post is already long enough. Suffice to say here, at least in regards to slavery, no, slavery in the Bible and the Ancient Near East is NOTHING similar to the slavery that occurred in America because it didn’t involve forced labor, it didn’t involve outside field work for the most part, slaves/bond-servants had incredibly good health insurance, bond-servants were paid, God tells Israel to treat their servants with compassion and reminds them of their time as slaves in Egypt, slaves can rescind their contracts at any time, slaves can own property including land, slaves can choose to stay with their master if they wanted to when the contract expired, slaves could learn a trade and after their contract ended, their master was mandated to send them off with a monetary-gift, etc. Yeah, not looking like Colonial America at all.

My response:

1. Either moral principles are 1) one person’s opinions, 2) conventions of a group of people existing in a certain time and place, or 3) objective prescriptions of how humans ought to act for all times and places. Non-theistic systems of ethics are necessarily 1 or 2 – they are just individual or collection opinions that refer to nothing objectively. The universe is an accident on atheism, and there is no way we ought to be. So there is no morality on atheism. Just words that people either accept or reject.

2. What you just said there is that what you think people ought to do is based on your subjective feelings and opinions. You like apple pie and I like blueberry pie. You think I ought to like apple pie. But there is no objective truth on the matter – you just have preferences, on atheism. You have opinions. But that is not morality, it is just personal tastes and preferences that you invented arbitrarily for yourself. That’s not morality, that’s personal preferences. And when an atheist understands the laws or values of a culture, he understands that they are arbitrary conventions that vary by time and place and not really rooted in any objective standard of how we ought to be.

3. Atheism has no objective moral standard because the universe, and humans, are ACCIDENTS, on atheism. There is no designer that prescribes behavior for humans on atheism. On theism, there is a designer who creates the universe and prescribes standards of behavior that are OUTSIDE opinions and preferences. You are talking about what you like and don’t like, and I am talking about what is objectively right and wrong. What you like and don’t like is based on your feelings, but on theism, right and wrong are based on the character of the person who creates the universe and is in a position to decide how free creatures ought to choose.

4. As an atheist, every opinion you have on what other people can do is AS WARRANTED as some other opinion of the opposite. The warrant for a belief on your view is in your feelings and maybe in the arbitrary customs of the people group where you find yourself in this time and place – which is no better or worse morality than any other time or place, but only different. You think that slavery is right or wrong based on opinions. You think that genocide is right or wrong based on opinions. You think that rape is right or wrong based on opinions. You think that murder is right or wrong based on opinions. And your opinion on moral questions is AS WARRANTED, on atheism, as the opposite opinion – because there is no objective standard, only your personal opinions and the fashions of your culture in this time and place. There is nothing more to morality on YOUR view than feelings and opinions and conventions. If you think that murder is wrong as an atheist, then what you mean is that your opinion is that murder is wrong, and that someone else who thinks that murder is right is AS WARRANTED IN FORMING THAT VIEW AS YOU ARE IN FORMING YOURS. Both opinions are rooted in the same ontological ground – FEELINGS.

Let me show you what atheists actually think about morality:

The idea of political or legal obligation is clear enough… Similarly, the idea of an obligation higher than this, referred to as moral obligation, is clear enough, provided reference to some lawgiver higher…than those of the state is understood. In other words, our moral obligations can…be understood as those that are imposed by God…. But what if this higher-than-human lawgiver is no longer taken into account? Does the concept of moral obligation…still make sense? …The concept of moral obligation [is] unintelligible apart from the idea of God. The words remain but their meaning is gone. (Richard Taylor, Ethics, Faith, and Reason (Englewood Cliffs, N. J.: Prentice-Hall, 1985), p. 83-84)

In a universe of blind physical forces and genetic replication, some people are going to get hurt, other people are going to get lucky, and you won’t find any rhyme or reason in it, or any justice. The universe that we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind, pitiless indifference… DNA neither knows nor cares. DNA just is. And we dance to its music. (Source: Richard Dawkins)

The position of the modern evolutionist is that humans have an awareness of morality because such an awareness of biological worth. Morality is a biological adaptation no less than are hands and feet and teeth. Considered as a rationally justifiable set of claims about an objective something, ethics is illusory. I appreciate when someone says, ‘Love thy neighbor as thyself,’ they think they are referring above and beyond themselves. Nevertheless, such reference is truly without foundation. Morality is just an aid to survival and reproduction, . . . and any deeper meaning is illusory. (Michael Ruse, “Evolutionary Theory and Christian Ethics,” in The Darwinian Paradigm (London: Routledge, 1989), pp. 262-269).

Atheism is the complete ANTI-MORALITY point of view.

If you don’t have a rational basis for acting morally, then you will only do it when you want to feel happy, and avoid feeling unhappy. You’ll do it if you feel like it, if people are watching, etc. But you won’t do the right thing if it gets in the way of your selfishness.

For a really good debate on whether morality is real on Christianity and/or atheism, listen to this debate with Glenn Peoples against Cambridge philosopher Arif Ahmed.

If you would like to hear another good debate on whether Christianity and/or atheism can ground some of these requirements, then click here. This one features Sean McDowell.

And here’s a debate that I did with one of our best atheist commenters, Moo.

More about atheistic concepts of morality

Some debates on God and morality

Science Daily reports on genetic convergence in bats and whales

We have to start this post with the definition of convergence in biology.

In evolutionary biology, convergent evolution is the process whereby organisms not closely related (not monophyletic), independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.

It is the opposite of divergent evolution, where related species evolve different traits.

On a molecular level, this can happen due to random mutation unrelated to adaptive changes; see long branch attraction. In cultural evolution, convergent evolution is the development of similar cultural adaptations to similar environmental conditions by different peoples with different ancestral cultures. An example of convergent evolution is the similar nature of the flight/wings of insects, birds, pterosaurs, and bats.

All four serve the same function and are similar in structure, but each evolved independently.

Jonathan Wells explains the problem that convergence poses for naturalistic evolution:

Human designers reuse designs that work well. Life forms also reuse certain structures (the camera eye, for example, appears in humans and octopuses). How well does this evidence support Darwinian evolution? Does it support intelligent design more strongly?

Evolutionary biologists attribute similar biological structures to either common descent or convergence. Structures are said to result from convergence if they evolved independently from distinct lines of organisms. Darwinian explanations of convergence strain credulity because they must account for how trial-and-error tinkering (natural selection acting on random variations) could produce strikingly similar structures in widely different organisms and environments. It’s one thing for evolution to explain similarity by common descent—the same structure is then just carried along in different lineages. It’s another to explain it as the result of blind tinkering that happened to hit on the same structure multiple times. Design proponents attribute such similar structures to common design (just as an engineer may use the same parts in different machines). If human designers frequently reuse successful designs, the designer of nature can surely do the same.

I’m a software engineer, and we re-use components all the time for different programs that have no “common ancestor”. E.g. – I can dump develop my String function library and use it in my web application and my Eclipse IDE plug-in, and those two Java programs have nothing in common. So you find the same bits in two different programs because I am the developer of both programs. But the two programs don’t extend from a common program that was used for some other purpose – they have no “common ancestor” program.

Now with that in mind, take a look at this post from Evolution News.

Excerpt:

Earlier this year I wrote about how convergent genetic evolution is highly unlikely under neo-Darwinism, but makes perfect sense if you allow common design. An article in ScienceDaily titled “In Bats and Whales, Convergence in Echolocation Ability Runs Deep,” points to evidence that, in my opinion, might be best explained by common design.

According to the standard mammalian phylogeny, the common ancestor of bats and whales was not capable of echolocation. Thus, the ability to echolocate must have evolved independently, and bat and whale echolocation is often cited by evolutionists as a textbook example of convergent evolution. However, the ScienceDaily article reports that these similarities are not just phenotypic but extend down into the level of the gene sequences:

two new studies in the January 26th issue of Current Biology, a Cell Press publication, show that bats’ and whales’ remarkable ability and the high-frequency hearing it depends on are shared at a much deeper level than anyone would have anticipated — all the way down to the molecular level

Just as I noted that convergent genetic evolution was said to be “surprising” under neo-Darwinian thinking, this article reports, “The discovery represents an unprecedented example of adaptive sequence convergence between two highly divergent groups and suggests that such convergence at the sequence level might be more common than scientists had suspected.”

The typical Darwinist tack is to call similar structures “superficially similar”. I.e. – the appearance (phenotypes) are similar, but at the genotype (code) level, there is nothing in common. They have to say that because there is no common ancestor who shares the structure, so the biological information CANNOT be similar. A naturalistic theory can’t accommodate similarities at the genetic level unless there is a shared common ancestor who has those instructions. But guess what? When you actually take a closer look at the evidence… the biological information IS similar between bats and whales – AND THEY DON’T SHARE A COMMON ANCESTOR. So it exactly like the software design scenario, where the designer has put the same bits into two programs that were developed independently and don’t extend from a common program.

The Science Daily article explains more:

“The natural world is full of examples of species that have evolved similar characteristics independently, such as the tusks of elephants and walruses,” said Stephen Rossiter of the University of London, an author on one of the studies. “However, it is generally assumed that most of these so-called convergent traits have arisen by different genes or different mutations. Our study shows that a complex trait — echolocation — has in fact evolved by identical genetic changes in bats and dolphins.”

[…]”We were surprised by the strength of support for convergence between these two groups of mammals and, related to this, by the sheer number of convergent changes in the coding DNA that we found,” Rossiter said.

Read the whole thing at Evolution News. This is quality work by Casey Luskin.