A Response to Evolution Deniers: How Complex Comes from Simple

evolution creationists simple complexIn a recent post, I responded to the Creationist challenge, “DNA is a program, programs demand a programmer, and that programmer is God” Let’s turn to a related idea, that DNA is too complex to have evolved naturally.

DNA (or RNA) becoming more complex, from the first simple cells four billion years ago to humans and other animals today, is explained by evolution, but conservative Christian groups often dogmatically reject evolution. They say that it is incompatible with God creating life in Genesis (in two incompatible stories, but never mind that). Adam didn’t evolve from earlier apes, they tell us—that would be yucky. No, God created Adam from dirt, which is far more dignified. And we know that Eve was made from Adam’s rib because it’s right there in Genesis (leading to the belief, which survives, that men have one fewer ribs than women).

Curiously, they never seem to be troubled by quantum physics, which is far more counterintuitive.

Let’s explore a few examples besides evolution where complex comes from simple. The well-known Fibonacci sequence is very simple. Each term is the sum of the two previous terms: F(n + 2) = F(n + 1) + F(n). After {1, 1} as the first two terms, we get:

1 + 1 = 2

2 + 1 = 3

3 + 2 = 5

5 + 3 = 8

8 + 5 = 13

And so on. It’s trivially simple, and yet entire books have been written on this simple series and its applications. As one example, the ratio of consecutive terms in the Fibonacci series becomes an increasingly good approximation to phi (φ), the golden ratio. Expressed formally:

Phi 2

And then phi itself is a fascinating number about which entire books have been written. To take just one example of many, phi (φ = 1.618 . . .) is the only number that if you take off the initial one (0.618 . . .) and then invert it (1/0.618 . . .) you get the original back: φ – 1 = 1/φ.

There are many more examples of complex coming from simple, some of which you are already familiar with.

  • Crystals and snowflakes are complex but formed from simple physical principles and laws.
  • Simple equations can form beautiful, complex, fractal artwork as Julia sets.
  • The harmonograph (typically, a pen is controlled by two pendulums as it draws on paper) was invented in the 1800s. A Spirograph creates similar art.
  • John Horton Conway’s Game of Life is a two-dimensional cellular automaton with three simple rules. The general category of cellular automata also create complex patterns with simple rules.
  • The members of social insect colonies—ants, termites, bees—don’t have large brains for complex algorithms, and yet they still create complex hives and nests. “A single ant or bee isn’t smart, but their colonies are,” as National Geographic put it. Starlings are famous for their swarms (“murmurations”) that appear to act as a single organism, and many fish swarm. Simple rules govern both.
  • A piano has 88 keys but can create a vast number of pieces of music.
  • The Periodic Table has 94 naturally occurring elements. From these millions of compounds are possible. Only 19 elements are essential for human life, but these make the thousands of chemicals that are metabolized as food and converted into thousands more to make a healthy human.
  • Mathematics has a small set of axioms (a statement declared true because of evidence, not because it derives from simpler axioms) from which derive its fantastic complexity—algebra, geometry, trigonometry, calculus, topology, group theory, linear algebra, probability and statistics, number theory, and so on.
  • Pulsars emit a beam of radiation at very precise intervals, measured in milliseconds or seconds. From our vantage point, they’re like a lighthouse. The pulses were so curiously regular that an intelligent source was considered, first as interference from the earth and then as a signal from an alien intelligence. We now know that pulsars are rotating neutron stars that emit beams of radiation from their poles.

That the complex can come from the simple is no proof that DNA wasn’t made by God or that there is no God, but it does illustrate that complexity can be nicely explained with natural means.

Creationists are forced to the very brink of accepting evolution when they agree that antibiotic resistance is caused by random mutation and natural selection acting on bacteria. Add more time (not just years but millions of years), and you get the diversity of life that you see on earth. Somehow Creationists imagine an unexplained shield that prevents one species from eventually becoming another.

At best, they propose an argument from ignorance: Wow—look at how DNA works. What could’ve caused that?? This is no evidence for God. And what does it say of their arguments that this argument from incredulity is in their arsenal? A god worth believing in wouldn’t be hidden.

If you pretend that your problems are already solved,
you have no motivation to solve them.
— Scathing Atheist podcast #76

Image credit: Wikimedia

“DNA is a Program, and Programs Demand a Programmer”: a Response

DNAOne popular science-y argument for God is that DNA is information. In fact, it’s not only information, it’s a software program. Programs require programmers, so for DNA, this programmer must be God.

For example, Scott Minnich, an associate professor of microbiology and a fellow at the Discovery Institute, said during the 2005 Kitzmiller v. Dover trial, “The sophistication of the information storage system in nucleic acids of RNA and DNA [have] been likened to digital code that surpasses anything that a software engineer at Microsoft at this point can produce.” Stephen Meyer, also of the Discovery Institute, said, “DNA functions like a software program. We know from experience that software comes from programmers.”

I wonder why DNA brings anything new to the conversation. The idea that the human body is like a designed machine has been in vogue ever since modern machines. The heart is like a pump, nerves are like wires, arteries are like pipes, the digestive system is like a chemical factory, eyes and ears are like cameras and microphones, and so on. But let’s ignore that and respond to the apologist’s claim that programs (in the form of DNA) require programmers.

Nature vs. machine

As a brief detour, notice how we tell natural and manmade things apart. Nature and human designers typically do things very differently. This excerpt from my book Future Hype: The Myths of Technology Change explores the issue:

By the 1880s, first generation mechanical typesetters were in use. Mark Twain was interested in new technology and invested in the Paige typesetter, backing it against its primary competitor, the Mergenthaler Linotype machine. The Paige was faster and had more capabilities. However, the complicated machine contained 18,000 parts and weighed three tons, making it more expensive and less reliable. As the market battle wore on, Twain put more and more money into the project, but it eventually failed in 1894. It did so largely because the machine deliberately mimicked how human typesetters worked instead of taking advantage of the unique ways machines can operate. For example, the Paige machine re-sorted the type from completed print jobs back into bins to be reused. This impressive ability made it compatible with the manual process but very complex. The Linotype neatly cut the Gordian knot by simply melting old type and recasting it. . . .

As with typesetting machines, airplanes also flirted with animal inspiration in their early years. But flapping-wing airplane failures soon yielded to propeller-driven successes. The most efficient machines usually don’t mimic how humans or animals work. Airplanes don’t fly like birds, and submarines don’t swim like fish. Wagons roll rather than walk, and a recorded voice isn’t replayed through an artificial mouth. A washing machine doesn’t use a washboard, and a dishwasher moves the water and not the dishes.

With DNA, we again see the natural vs. manmade distinction. It looks like the kind of good-enough compromise that evolution would create, not like manmade computer software. Not only does the cell have no CPU, the part of a computer that executes instructions, but we’ve created genetic software that changes and improves in an evolutionary fashion. This software can be used for limited problems, but it must be treated as a black box. It looks nothing like the understandable, maintainable software that humans create.

As another illustration of the non-software nature of DNA, the length of an organism’s DNA is not especially proportionate to its complexity. This is the c-value enigma, illustrated with a chart comparing DNA length for many categories of life here.

We actually have created DNA like a human programmer would create it, at least short segments of it. The Craig Venter Institute encoded four text messages into synthetic DNA that was then used to create a living, replicating cell. That’s what a creator who wants to be known does. Natural DNA looks . . . natural. (See more on the broken stuff in DNA here and how this defeats the Design Hypothesis here.)

If God designed software, we’d expect it to look like elegant, minimalistic, people-designed software, not the Rube Goldberg mess that we see in DNA. Apologists might wonder how we know that this isn’t the way God would do it. Yes, God could have his own way of programming that looks foreign to us, but then the “DNA looks like God’s software!” argument fails.

Consider more broadly this supposed analogy between human design and biological systems.

  • Human designs have parts purposely put together. We know they are designed because we see the designers and understand how they work.
  • Biological systems live and reproduce, and they evolve based on mutation and natural selection.

But these traits of human designs don’t apply to biological systems, and vice versa. So where is the analogy? The only thing they share is complexity, which means that the argument becomes the naïve observation, “Golly, biological systems are quite complicated, so they must be designed.” This is no evidence for a designer, just an unsupported claim that complexity demands one. And why think complexity is the hallmark of design? Wouldn’t it be elegance or something similar?

The software analogy leads to uncomfortable conclusions

The DNA = software analogy brings along baggage that the Christian apologist won’t like. The apologist demands, “DNA is information! Show me a single example of information not coming from intelligence!”

This makes them vulnerable to a straightforward retort: Show me a single example of intelligence that’s not natural. Show me a single example of intelligence not coming from a physical brain (h/t commenter Benjamin Bastin). These apologists are apparently quite comfortable with things that have no precedent (and far too comfortable with things that have no evidence, like the supernatural).

Actually, we find information in lots of nonliving natural things. The frequency components of starlight encodes information about that star’s composition and speed. (h/t commenter Greg G.) Tree rings tell us about past precipitation and carbon-14 fluctuation. Ice cores and varves (annual sediment layers) also reveal details of climate. Smell can tell us that food has gone bad or if a skunk is nearby.

Genetic software is another example of information creation. The apologist will object that genetic software doesn’t qualify because it’s created by humans. That’s true, but the software is simply a concrete demonstration that proves the idea. Drop the software and make it a thought experiment.

The popular DNA = software analogy should be retired for lack of evidence.

Next: A response to evolution deniers: how complex comes from simple

To ask an atheist what evidence would change their mind
is to admit we’re in a naturalistic universe
and thus make the question void.
— commenter primenumbers

Image credit: AndreaLaurel, flickr, CC

A Convincing Holy Book? Not Possible.

change your mind christianity atheismHere’s a thought experiment. Say you’re a strong Christian. You’re comfortable arguing for your position. You don’t think much of the atheist arguments that you’ve seen so far, and you’ve seen quite a few.

Now you come across a holy book from some other religion. It’s an English translation from an original written in a long-dead language from a foreign culture.

What could the book possibly say that would convince you that its miracle claims are correct? That it—and not your own Christianity—is correct? It’s just words on paper. What possible combination of words would be compelling?

We’ll make the case for the ancient religion as strong as possible

  • Oral history. The earliest New Testament books were Paul’s epistles, written more than two decades after the life of Jesus. The gospel of John was written roughly six decades after, and Revelation and others possibly later still. The books of our imaginary religion were written roughly contemporaneously so that the period of oral history is almost nonexistent.
  • Translation. The Christian story came from Jewish culture and the Aramaic language, but the original New Testament documents came from a very different culture (Greek) and language (Greek). Our imaginary religion will not have this extra level of translation.
  • Copies far removed from originals. Our oldest copies of the books of the New Testament were written centuries after the originals. We’ll make ours just decades after. No—what the heck—let’s make them the originals themselves, 100% complete.
  • Eyewitness testimony? Some of the noncanonical gospels claimed to have been written by eyewitnesses. For example, the Gospel of Peter says, “But I Simon Peter and Andrew my brother took our nets and went to the sea.” The Infancy Gospel of Thomas begins, “I Thomas, an Israelite, write you this account.” The Gospel of Thomas begins, “These are the secret sayings which the living Jesus spoke and which Didymos Judas Thomas wrote down.” Historians doubt that they are actual eyewitness accounts, but at least they claimed that they were. The four canonical gospels make no such claim—we don’t even know who wrote them—but the books in our imaginary religion will.
  • Contradictions. The four gospels tell an inconsistent story. Was Jesus on earth 40 days after the resurrection (Acts) or one day (Luke)? Was there an earthquake followed by the dead rising from their graves? Only Matthew makes this claim. How many women were there? In what ways did Peter deny Jesus three times? And so on. The typical apologist’s response is to harmonize any differing accounts into a clumsy whole, but our imaginary religion will have multiple mutually supporting accounts with no contradictions.

In short, any positive feature of the evidence for the Jesus story will be matched or exceeded by our imaginary religion.

How are we doing so far, my Christian friend? Do you have any remaining objections where you see better evidence in favor of the gospel claims? Apply those features to improve our imaginary religion. How many independent accounts of the miraculous events do you want? Add that to the list. Does an ancient book sound more in touch with cosmic truth, or would you prefer a more recent and verifiable book? Would you prefer the documents to be written in an ancient language or modern English? A living language or a dead one? Do incidental elements in the story make it sound more authentic? Add it to the list. The only rule is that the evidence itself must be natural, as is the case with Christianity. No microfiche or holograms or levitating tablets or anything else outside of the technology of the time. No modern English written on a papyrus dating to 2000 years ago.

Given all this, would you become a believer? After a few days kicking the tires to verify that scholars indeed did agree to these claims, would you switch your allegiance?

If not, then evidence can’t be particularly important to you. If you say that your belief is based primarily on something besides objective evidence—personal experience or the religion you were taught as a child, perhaps—then don’t imagine that this will convince anyone else. If evidence doesn’t underlie your belief, why should I be convinced?

Instead, make clear that you believe because of this personal experience and not from evidence. Don’t raise evidence-based arguments if you believe in spite of the evidence.

The invisible and the non-existent
look very much alike.
— Delos McKown

(This is an update of a post that originally appeared 11/6/13.)

Photo credit: Wikimedia

25,000 New Testament Manuscripts? Big Deal.

A popular Christian argument declares that historians have roughly 25,000 manuscripts of New Testament books, far more than any other book from ancient history. Compare that with 2000 copies of the Iliad, the second-best represented manuscript from history. Even more poorly represented are the works of Herodotus, Thucydides, Aristotle, Julius Caesar, Pliny, Tacitus, and other great figures from history, for which we have more like a dozen manuscripts each.

Do we conclude that our records of Gallic Wars by Julius Caesar or Histories by Tacitus are so unreliable that they can’t inform our understanding of the past? Of course not. But if that’s the case, we must then accept the far-better attested New Testament manuscripts—or so the popular argument goes.

The first problem is that more manuscripts at best increase our confidence that we have the original version. That doesn’t mean the original copy was history—just like the original copy of The Wizard of Oz or the Arthurian legends wouldn’t be a record of history.

Consider the claim of 25,000 manuscripts. The originals of every New Testament book were written in Greek, but three-quarters of these manuscripts are translations into other languages. We can avoid the extra layer of interpretation imposed by a translation by focusing on just the 5800 Greek manuscripts.

Now consider when these manuscripts were written.

This chart shows the number of Greek manuscript copies by century. (The data is from Wikipedia, with manuscripts categorized on the cusp of two centuries put into the earlier century.) We have zero manuscripts from the first century and eight from the second. The twelfth century has the most, with 1090 manuscripts. The printing press was invented in the middle of the fifteenth century, which explains much of the drop on the right of the chart.

I recently explored the three most famous additions to the New Testament (the Comma Johanneum, the woman caught in adultery, and the long ending of Mark). The scholarly analysis for whether some of these passages are authentic or not turn on just a few manuscripts, and this chart shows why. The vast majority of the manuscripts, from perhaps the sixth century and after, never enter the conversation.

Our 25,000 manuscripts became 5800 Greek manuscripts, but those have now dwindled to just those few in the first few centuries after the crucifixion.

There are one hundred manuscripts in the first four centuries, and many of these are just tiny scraps. Consider papyrus P52 above—yes, that is considered a “manuscript.” It is a tiny fragment of John just 9 cm long. It is our oldest New Testament manuscript and dates to the first half of the second century, or perhaps later. Three more manuscripts (P90, P98, and P104) are also scraps of a similar size and date to the second half of the second century. (Though it’s probably obvious, I’ll emphasize that these dates are all just approximations, and arguments can be made for different dates.)

Another handful of manuscripts date to around 200 CE. Six of them (P4, P32, P64, P66, P77, and P103) are scraps, but in this group we get our first substantial manuscripts. P46 (part of the Chester Beatty collection) has much of nine epistles. P66 contains most of John. P75 (the Bodmer Papyrus) has a substantial fraction of Luke and John.

The record looks fairly good when you look at the dates of our earliest fragments of the various books in the New Testament—John in the second century, Matthew and Luke around 200, Mark around 250, and so on. But, again, the emphasis should be on the word fragment. Only when you get to the oldest complete (or nearly complete) texts—the Codex Sinaiticus and Codex Vaticanus from the fourth century—do you get all the missing pieces. (I’ve written more about this centuries-long dark age here.)

The “best attested by far!” claim for the New Testament is not only irrelevant, it’s not even true. You can find Egyptian hieroglyphics and Mesopotamian clay tablets that are both older and original. A single version, the original, beats enormous numbers of copies.

It’s not all that surprising that a handful of early documents from a popular religion in a dry climate were preserved until today, and let’s acknowledge that that’s impressive and historically important. But that we have 1090 manuscripts in the original Greek from the twelfth century is not much more helpful in recreating the originals than that we have 100 million new copies printed each year. What matters are the earliest copies—perhaps the hundred from first four centuries. And the hundred dwindle down to just a relevant handful of copies that are larger than scraps.

25,000 New Testament manuscripts? Big deal.

It is error alone which needs the support of government.
Truth can stand by itself.
— Thomas Jefferson

(This is an update of a post that originally appeared 11/4/13.)

Photo credit: Wikipedia

 

Limitations in Historical Analysis of the New Testament (2 of 2)

Fragment of Luke from Chester Beatty papyrusIn Part 1, we saw the evidence and resolution of two disputed passages in the New Testament. Let’s look at one more and see what lessons we can draw.

Success #3: Long ending of Mark

Mark ends with three women going to the tomb and seeing it already open. (I’ve written more about the many contradictions in the gospel accounts of the resurrection here.) Inside the tomb, there is no Jesus but instead a man in white who tells the women the good news. But, “trembling and bewildered, the women went out and fled from the tomb. They said nothing to anyone, because they were afraid” (Mark 16:8).

The End.

Most readers find this an unsatisfying ending. How does the marvelous story get out if the women told no one? Are there no final words of comfort and direction from Jesus?

That disquiet must have been felt by early scribes as well, because they created the Long Ending (Mark 16:9–20), used in the King James Bible.

Jesus says,

These signs will accompany those who believe: In my name they will drive out demons; they will speak in new tongues; they will pick up snakes with their hands; and when they drink deadly poison, it will not hurt them at all; they will place their hands on sick people, and they will get well. (Mark 16:17–18)

Speaking in tongues, invulnerability to snakes and poison, and healing by touch—those claims are both startling to many Christians today and relevant to many more. Pentecostal and charismatic churches, which rely to varying degrees on the Long Ending, have half a billion members worldwide.

Justin Martyr, Tatian, and Irenaeus reference the Long Ending in the second half of the second century. The Codices Sinaiticus and Vaticanus, our oldest copies of Mark that include the ending, don’t have it, but they’re from the fourth century. Sounds like strong evidence for it being authentic.

On the other hand, the Long Ending appears tacked on and doesn’t flow well, and the consensus of scholars is that this is not original.

Nevertheless, that the Long Ending isn’t original doesn’t mean that Mark ending at 16:8 is. In fact, there are a total of five manuscript traditions for the ending of Mark, and the consensus is that none of them are the original ending.

The limitation of historical analysis

Let me highlight a couple of points. First, note that the enormous number of New Testament manuscripts that apologists like to point to (roughly 6000 in the original Greek and 19,000 in other languages) don’t matter. What matters are the best handful. Each of the debates above is resolved with just a few ancient manuscripts. The discovery of a thousand 12th-century manuscripts would likely advance scholarship less than the discovery of a single second-century papyrus.

Second, this analysis requires two versions. The scholar needs two traditions (a short Mark and a long Mark, for example, with at least one manuscript to represent each) to judge between the two. With only one tradition represented, there’s nothing to judge between.

It’s like a card game. You throw down two fourth-century Bible manuscripts that demonstrate your point—that a particular passage isn’t authentic, let’s imagine. I might be able to trump that with my third-century church father who quotes the passage from the gospel in question.

single older manuscript reflecting your version might tip the balance in your favor. And—who knows?—such a manuscript might yet be found that would overturn the conclusions for one of our three examples. For example, Daniel Wallace claims to have a first-century copy of Mark, the analysis of which will soon be released. This might turn out to be like the tiny fragment called the Gospel of Mrs. Jesus, which after more thorough analysis didn’t turn out to be all that old. But suppose this first-century Mark had the last chapter. Could it overturn the consensus of scholars about the ending of Mark?

Apologists like to claim that manuscript variants cause them no lost sleep. Look at these three questionable sections, they’ll say. They’re all resolved to everyone’s satisfaction, so where’s the problem?

Here’s the problem. Imagine a historical fork in the road for a particular document. The correctly copied version goes down path A, and the one with a significant error goes down path B. Now imagine that one of those traditions is completely lost to us. That’s hardly surprising. We have only a few tiny scraps of papyrus manuscripts within the first century after the original authorship.

Historians today would have a single, consistent tradition, but is it A or B? Worse, they wouldn’t even know that there had been a fork in the road.

For how many errors in our Bible do we not even know to ask what the original was?

See also: How Long from Original New Testament Books to Oldest Copies?

Those who do not know their opponent’s arguments 
do not completely understand their own.
— Anon.

(This is an update of a post that originally appeared 10/31/13.)

Photo credit: Wikipedia

 

Why is God Hidden? (2 of 2)

problem of divine god's hiddennessThe Problem of God’s Hiddenness is the most powerful argument against Christianity. In part 1, we considered a defense of God’s hiddenness by Christian apologist Jim Wallace, written several years ago. Let’s conclude with a second argument Wallace wrote recently, “God’s Hiddenness Is Intended to Provoke Us,” which has a new approach to the problem.

God’s hiddenness? It’s a test.

I believe the answer [to this problem of God’s hiddenness] lies in God’s desire to provoke us; His desire to elicit a true, loving response from His children. This goal of producing something beautiful (a genuine, well-intentioned, loving response), requires Him to hide from us.

You’ve created a trickster god. God appears nonexistent, so you must invent outlandish reasons why he might be hiding instead. Is it better to have a trickster god than to admit that your god doesn’t exist? I don’t think so.

Wallace wants us to believe that God must be hidden even though that is a feature of no healthy relationship we have with other people.

He introduces an analogy: consider a “gold digger,” a beautiful woman who marries a much older rich man, not for love but for greed. Suppose a rich man wants an old-fashioned marriage based on love—how can he find a partner who wants to get married for love rather than money? He could conceal his wealth (and maybe his identity) so that no gold digger would consider him.

That is how Wallace sees God. God is the rich guy who’s hiding his wealth to get our honest, authentic reaction instead of one distorted by his majesty. He gives several Old Testament examples, but he forgets that sometimes God isn’t at all overpowering: “The LORD would speak to Moses face to face, as one speaks to a friend” (Exodus 33:11). Even the people overwhelmed by God didn’t develop a superficial relationship with God as a result—they already believed.


See also: The Most Powerful Argument Against Christianity


What is the equivalent of the big reveal (“I have a confession to make, my dear—I’m not an appliance salesman but am actually Byron Rachmaninov, billionaire industrialist”)? It’s not like believers don’t already know of God’s attributes. Wallace seems to imagine that we’ll develop a relationship with God, only to get a happy upgrade once we’ve settled into a comfortable relationship, where God says, “I’m not just a Class C phantasm, as I’ve pretended, but I’m actually the Creator of the universe.”

But Wallace sells God short. Surely God could see your honest intentions to root out the gold diggers. (This is also the failure of Pascal’s Wager. God isn’t so stupid that he couldn’t see through someone simply going through the motions.)

Wallace confuses evidence for God’s existence with secondary matters such as specifics of God’s nature, how or whether we will worship him, God’s desire to have a relationship based on love, and so on. I suspect that he actually understands this, and his confusion is a deliberate sleight of hand on his part.

Atheists are just asking for God to be apparent, which is not an unreasonable request. That apologists can only give vague clues for God, for which a naturalistic explanation is the better explanation, means we are not justified in holding the God belief.

No one would bring out this argument except to justify belief in a god that didn’t exist.

Theology is guessing about what an imaginary being is thinking.
— commenter Michael Neville

Image credit: Peter, flickr, CC