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Stephen C. Meyer and Marcus Ross lecture on the Cambrian explosion

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Cambrian Explosion
Cambrian Explosion

Access Research Network is a group that produces recordings  of lectures and debates related to intelligent design. I noticed that on their Youtube channel they are releasing some of their older lectures and debates for FREE. So I decided to write a summary of one that I really like on the Cambrian explosion. This lecture features Dr. Stephen C. Meyer and Dr. Marcus Ross.

The lecture is about two hours. There are really nice slides with lots of illustrations to help you understand what the speakers are saying, even if you are not a scientist.

Here is a summary of the lecture from ARN:

The Cambrian explosion is a term often heard in origins debates, but seldom completely understood by the non-specialist. This lecture by Meyer and Ross is one of the best overviews available on the topic and clearly presents in verbal and pictorial summary the latest fossil data (including the recent finds from Chengjiang China). This lecture is based on a paper recently published by Meyer, Ross, Nelson and Chien “The Cambrian Explosion: Biology’s Big Bang” in Darwinism, Design and Public Education(2003, Michigan State University Press). This 80-page article includes 127 references and the book includes two additional appendices with 63 references documenting the current state of knowledge on the Cambrian explosion data.

The term Cambrian explosion describes the geologically sudden appearance of animals in the fossil record during the Cambrian period of geologic time. During this event, at least nineteen, and perhaps as many as thirty-five (of forty total) phyla made their first appearance on earth. Phyla constitute the highest biological categories in the animal kingdom, with each phylum exhibiting a unique architecture, blueprint, or structural body plan. The word explosion is used to communicate that fact that these life forms appear in an exceedingly narrow window of geologic time (no more than 5 million years). If the standard earth’s history is represented as a 100 yard football field, the Cambrian explosion would represent a four inch section of that field.

For a majority of earth’s life forms to appear so abruptly is completely contrary to the predictions of Neo-Darwinian and Punctuated Equilibrium evolutionary theory, including:

  • the gradual emergence of biological complexity and the existence of numerous transitional forms leading to new phylum-level body plans;
  • small-scale morphological diversity preceding the emergence of large-scale morphological disparity; and
  • a steady increase in the morphological distance between organic forms over time and, consequently, an overall steady increase in the number of phyla over time (taking into account factors such as extinction).

After reviewing how the evidence is completely contrary to evolutionary predictions, Meyer and Ross address three common objections: 1) the artifact hypothesis: Is the Cambrian explosion real?; 2) The Vendian Radiation (a late pre-Cambrian multicellular organism); and 3) the deep divergence hypothesis.

Finally Meyer and Ross argue why design is a better scientific explanation for the Cambrian explosion. They argue that this is not an argument from ignorance, but rather the best explanation of the evidence from our knowledge base of the world. We find in the fossil record distinctive features or hallmarks of designed systems, including:

  • a quantum or discontinuous increase in specified complexity or information
  • a top-down pattern of scale diversity
  • the persistence of structural (or “morphological”) disparities between separate organizational systems; and
  • the discrete or novel organizational body plans

When we encounter objects that manifest any of these several features and we know how they arose, we invariably find that a purposeful agent or intelligent designer played a causal role in their origin.

Recorded April 24, 2004. Approximately 2 hours including audience Q&A.

You can get a DVD of the lecture and other great lectures from Access Research Network. I recommend their origin of life lectures – I have watched the ones with Dean Kenyon and Charles Thaxton probably a dozen times each. Speaking as an engineer, you never get tired of seeing engineering principles applied to questions like the origin of life.

If you’d like to see Dr. Meyer defend his views in a debate with someone who reviewed his book about the Cambrian explosion, you can find that in this previous post.

Further study

The Cambrian explosion lecture above is a great intermediate-level lecture and will prepare you to be able to understand Dr. Meyer’s new book “Darwin’s Doubt: The Explosive Origin of Animal Life and the Case for Intelligent Design“. The Michigan State University book that Dr. Meyer mentions is called “Darwin, Design and Public Education“. That book is one of the two good collections on intelligent design published by academic university presses, the other one being from Cambridge University Press, and titled “Debating Design: From Darwin to DNA“. If you think this lecture is above your level of understanding, then be sure and check out the shorter and more up-to-date DVD “Darwin’s Dilemma“.

Polemics

What are the historical arguments for the post-mortem appearances of Jesus?

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Sherlock Holmes and John Watson are going to take a look at the data
Sherlock Holmes and John Watson are going to take a look at the data

Eric Chabot of Ratio Christi Ohio State University has a great post up about the post-mortem appearances of Jesus.

The post contains:

  • a list of the post-mortem resurrection appearances
  • quotations by skeptical historians about those appearances
  • alternative naturalistic explanations of the appearances
  • responses to those naturalistic explanations

Although there is a lot of research that went into the post, it’s not very long to read. The majority of scholars accept the appearances, because they appear in so many different sources and because some of those sources are very early, especially Paul’s statement of the early Christian creed in 1 Corinthians 15:3-7, which is from about 1-3 years after Jesus was executed by the Romans. Eric’s post lists out some of the skeptical scholars who the appearances, and you can see how they allude to the historical criteria that they are using. (If you want to sort of double-check the details, I blogged about how historians investigate ancient sources before)

Let’s take a look at some of the names you might recognize:

E.P. Sanders:

That Jesus’ followers (and later Paul) had resurrection experiences is, in my judgment, a fact. What the reality was that gave rise to the experiences I do not know. “I do not regard deliberate fraud as a worthwhile explanation. Many of the people in these lists were to spend the rest of their lives proclaiming that they had seen the risen Lord, and several of them would die for their cause. Moreover, a calculated deception should have produced great unanimity. Instead, there seem to have been competitors: ‘I saw him first!’ ‘No! I did.’ Paul’s tradition that 500 people saw Jesus at the same time has led some people to suggest that Jesus’ followers suffered mass hysteria. But mass hysteria does not explain the other traditions.” “Finally we know that after his death his followers experienced what they described as the ‘resurrection’: the appearance of a living but transformed person who had actually died. They believed this, they lived it, and they died for it.”[1]

Bart Ehrman:

It is a historical fact that some of Jesus’ followers came to believe that he had been raised from the dead soon after his execution. We know some of these believers by name; one of them, the apostle Paul, claims quite plainly to have seen Jesus alive after his death. Thus, for the historian, Christianity begins after the death of Jesus, not with the resurrection itself, but with the belief in the resurrection.[2]

Ehrman also says:

We can say with complete certainty that some of his disciples at some later time insisted that . . . he soon appeared to them, convincing them that he had been raised from the dead.[3]

 Ehrman also goes onto say:  

Historians, of course, have no difficulty whatsoever speaking about the belief in Jesus’ resurrection, since this is a matter of public record.[4]

Why, then, did some of the disciples claim to see Jesus alive after his crucifixion? I don’t doubt at all that some disciples claimed this. We don’t have any of their written testimony, but Paul, writing about twenty-five years later, indicates that this is what they claimed, and I don’t think he is making it up. And he knew are least a couple of them, whom he met just three years after the event (Galatians 1:18-19).[5]

Marcus Borg

The historical ground of Easter is very simple: the followers of Jesus, both then and now, continued to experience Jesus as a living reality after his death. In the early Christian community, these experiences included visions or apparitions of Jesus. [8]

The references to Paul are because of the early creed he records in 1 Corinthians 15:3-7, and his conversations with the other eyewitnesses in Galatians. Eric has another post where he goes over that early creed, and it is something that every Christian should know about. It’s really kind of surprising that you never hear a sermon on that early creed in church, where they generally sort of assume that you believe everything in the Bible on faith. But skeptical historians don’t believe in the post-mortem appearances by faith – they believe it (in part) because of 1 Corinthians 15:3-7.

If you want to see a Christian scholar make the case for the resurrection appearances in a debate, then here is a post I wrote with the video, audio and summary of the William Lane Craig vs James Crossley debate on the resurrection.

Polemics

If you could rescue EITHER embryos OR a 5-year-old, what would you do?

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I'm Scheming Unborn Baby, and I approve this study
I’m Scheming Unborn Baby, and I approve this message

I overheard Ben Shapiro talking about some pro-abortion tweet that went viral on Twitter. Basically, the snarky pro-abortion person tried to make the case that unborn children don’t deserve legal protections because people have a moral intuition to save a 5-year-old instead of an embryo, if they can only choose one. The best response to this dilemma comes from Robert George, professor at Princeton University and Christopher Tollefsen.

Their article was posted at The Public Discourse.

Excerpt:

We agree that considering the case as described by Sandel, most people in Jones’s circumstances would choose to rescue the girl. However, this by no means shows that human embryos are not human beings or that they may be deliberately killed to produce stem cells, or in an abortion.

The first thing to notice is that the case as described is not, in fact, analogous to the suggestion that we should perform embryo-destructive research for the benefits it might provide us, or to the suggestion that it is permissible to abort an unborn human being. In both such cases, we are being invited to kill, or authorize the killing of, human embryos or fetuses in order to provide benefits to others. But in the fire scenario, there is no killing; the deaths of the embryos who are lost when Jones opts to save the girl are not killings—no one is acting to destroy the embryos or cause their deaths—but rather are the kind of death we accept as side effects in various cases in which, for example, acting to save one or some persons means that we are unable to save another or others.

Second, there are differences between the embryos and the five-year-old girl that are or can be morally relevant to the decision concerning whom to rescue. For example, the five-year-old will suffer great terror and pain in the fire, but the embryos will not. Moreover, the family of the five-year-old presumably loves her and has developed bonds of attachment and affection with her that will mean much greater grief in the event of her death than in the event of the death of the embryos. While these concerns would not justify killing, they can play a legitimate role in determining how we may allocate scarce resources and, in some cases, whom we may or should rescue. Often, the (or at least a) morally correct decision cannot be made just on the numbers—a point that even utilitarians are willing to acknowledge. And so, for example, it is morally relevant in some cases where choices of whom to rescue must be made that a person we could save is (for example) our own son or daughter, even if saving him or her means that we cannot save, say, three of our neighbors’ children who end up perishing in the fire from which we saved our own child.

The analogy, like Judith Jarvis Thomson’s violin analogy, completely ignores the fact that in a pregnancy, the baby is created as a result of the decisions of the mother and the father of the baby. This is not some stranger, this is their child. And in the case of abortion, it’s not being done to save a 5-year-old. I once heard of a case where a woman killed her unborn child so she wouldn’t look fat on the beach, during her vacation. Hardly a morally sufficient reason.

I really liked this:

The possibility that resources might be used and even, perhaps, lives risked to save the frozen embryos calls to mind the story with which we began our book Embryo: A Defense of Human Life. In 2005, in the aftermath of Hurricane Katrina, a police crew in New Orleans did save a canister of fourteen hundred human embryos from a hospital. Our book began with Noah, one of those embryos, who sixteen months later emerged, via Caesarean section, into the light of the world and his parents’ love. But if those officers had never made it to Noah’s hospital, or if they had abandoned those canisters of liquid nitrogen, the toll of Katrina would have been fourteen hundred human beings higher than it already was, and Noah, sadly, would have perished before having the opportunity to meet his loving family.

The harm of abortion is exactly like the harm of murder in general… each act deprives a person of all of their future. And this against the victim’s will, and without adequate moral justification.

An embryo has a unique genetic signature different from his mother, different from his father. He is a different person, and, if given shelter and food, he will grow up just like any of us do. Is it such a terrible thing to give food and shelter to another human being, that was created as a direct result of the choices of grown-ups? We don’t get to resort to murder of others just in order to make our own lives easier, do we?