The Cambrian explosion refers to the sudden appearance of new body plans in the fossil record. ID proponents think that the period is between 5-10 million years at the most. Naturalists want to stretch out the period in which the body plans appear to tens of millions of years. The two sides can’t both be right. What’s the truth?
To establish the length of the most explosive period of innovation within the Cambrian explosion itself, Meyer cites the work of MIT geochronologist Samuel Bowring and his colleagues as well the work of another group led by Smithsonian paleontologist Douglas Erwin. The Bowring-led study showed that (in their words) “the main period of exponential diversification” within the Cambrian lasted “only 5-6 million years” (emphasis added). Meyer explains:
An analysis by MIT geochronologist Samuel Bowring has shown that the main pulse of Cambrian morphological innovation occurred in a sedimentary sequence spanning no more than 6 million years. Yet during this time representatives of at least sixteen completely novel phyla and about thirty classes first appeared in the rock record. In a more recent paper using a slightly different dating scheme, Douglas Erwin and colleagues similarly show that thirteen new phyla appear in a roughly 6-million-year window. (p. 73)
[…][T]ake a look first at the following figure that Bowring and his colleagues included in their definitive 1993 article, published in the journal Science. They use radiometric methods to date the different stages of the Cambrian period, including the crucial Tommotian and Atdabanian stages in which the greatest number of new animal phyla and classes arise. Note that the so-called Manykaian stage of the Cambrian period lasts about 10-14 million years. Note also that the main pulse of morphological innovation didn’t begin during this stage but rather during the Tommotian and Atdabanian — a period that they describe as taking between “5 to 10 million years,” and in a more detailed passage as taking about 5-6 million years.
[…]In the figure above, the Tommotian and Atdabanian stages of the Cambrian period together span only about 5 million years, starting at about 530 and ending about 525 million years ago. Bowring’s figure also depicts the total number of classes and orders present at any given time during the Cambrian period. The biggest increases in morphological innovation occur during the Tommotian and Atdabanian stages. Indeed, during this period the number of known orders nearly quadruples. Moreover, Bowring and his colleagues also make clear that this period corresponds to the main pulse of Cambrian morphological innovation as measured by the number of new phyla and classes that first appear. They note that, while a few groups of animals do arise in the earliest Manykaian stage of the Cambrian, the most rapid period of “exponential increase of diversification,” corresponding to the Tommotian and Atdabanian stages, “lasted only 5 to 6 m.y.”
You can see the figure they are reference in the Evolution News article.
Also, check out these clips that explain the Cambrian explosion:
The first clip features James Valentine, a professor of biology at the University of California who just co-authored a new book on the Cambrian explosion and is not a proponent of intelligent design.
The consensus among scientists regarding the period of time in which the new body plans appear is 5-6 million years. Biologically speaking, that’s a blink of an eye. You aren’t going that kind of complexity and innovation in such a short period of time any more than you can expect to win the lottery by buying 5-6 million tickets when the odds of winning are 1 in a googol (10 to the 100th power – 1, followed by 100 zeroes). You don’t have enough lottery tickets to make winning the lottery likely. Similarly, 5-6 million years is not enough time for naturalistic mechanisms to code brand new body plans from scratch. It would be like trying to research and write a Ph.D thesis during a single lunch hour. It’s just not enough time to produce the amount of information that’s required.
(Re-posting this for those who missed it the first time around)
This is a must-see / must-hear conversation. Famous conservative Ben Shapiro discusses evolution and intelligent design with Dr. Stephen C. Meyer, author of “Signature in the Cell” (origin of life) and “Darwin’s Doubt” (fossil record). These are the two best books on intelligent design. Their conversation covers the most important issues in the origins debate.
Someone actually put out an outline on Youtube, with a time-based index, so I’ll just steal that as a base, and add to it:
1:34What is your scientific background? Science undergraduate degree, professional geologist, later did a PhD in philosophy of science from Cambridge University.
2:39What is the difference between intelligent design and creationism? Creationism starts from the Bible and posits a shorter history of the universe. ID starts from the data of the natural world and is neutral about the age of the Earth / universe. Meyer accepts the old-Earth.
3:36 How is Intelligent Design a scientific theory? The discovery of DNA reveals that code is central to living systems. Intelligent design uses the method of “inference to the best explanation” in order to argue that the best explanation for the code is an intelligent agent.
6:10What evidence would have to arise to make Intelligent Design Falsifiable? If a naturalistic mechanism was discovered that could produce biological information using the probabilistic resources of the universe, and the time available, then intelligent design would be falsified.
7:26 Is religion separate from science or intertwined within it? There are three views: science is totally separate from religion, science is in total conflict with religion, science and religion agree on some issues, e.g. – the origin of the universe and Genesis 1:1. There are areas where science and religion overlap.
9:55 Why are the most prominent Darwinians also militant atheists? Evolution is a theory that tries to explain nature using naturalistic mechanisms, so it is compatible with atheism.
10:45What does the theory of evolution say? The term evolution has multiple meanings, and should be defined before discussions. It can refer to change over time. It can refer to animals changing slightly to adapt to enviromental changes. It can refer to the idea that all animals evolved from simpler life forms, and that there is a tree of life showing how different types of organisms share common ancestors. And it can refer to the idea that purely undirected processes can explain the history of life using purely materialistic forces. It’s that final view that intelligent design challenges.
13:15Where is the discontinuity in naturalistic processes in the development of life? The first discontinuity is the origin of simple life from non-living components. The second discontinuity is the sudden appearance of different body plans in a very narrow window of time in the Cambrian era.
15:42 Why does information theory suggest that code requires some sort of designer? DNA is a true information-bearing system identical to the software in computers, e.g. – operating system, applications.
19:45Can information be created by random mutation, and favorable mutations preserved by natural selection? Just as in software code, instructions must be added in order to develop new functionality. Random additions of characters will almost always degrade biological function. The number of possible sequences that do nothing useful is vastly higher than the number of sequences that perform biological functions. Doug Axe did research on this at Cambridge University, and he found that the number of functional sequences of amino acids is 1 in 10 to the 77th power. Given the probabilistic resources (replicating organisms)and the time available, it is extremely unlikely to find sequences that have functional information by chance.
25:05 What about Stephen Jay Gould’s model of punctuated equilibrium – doesn’t it explain the sudden jumps in information? Gould’s mechanism is accurate according to the fossil record, which shows a lot of jumps. But he did not have a naturalistic explanation for sudden jumps in biological function. Darwinian mechanisms work slowly and would (in theory) produce different body plans gradually. But this is not what the fossil record shows.
27:22 What is the mechanism for injecting information in the theory of intelligent design? The information comes in from an intelligence when new major body plans appear, and minor variations within types could be explained by evolution.
29:25Does the Miller-Urey experiment provide a naturalistic explanation for the building blocks necessary for the origin of life? The MU experiment only produced a few types of amino acids, it doesn’t say anything about how to sequence the amino acids in order to form protein folds that can perform biological functions. The MU experiment also pre-supposes conditions on the early Earth (reducing gases) that do not match what was there (oxidyzing or neutral gases).
32:00 Is the RNA world hypothesis is a good explanation for the origin of life? Evolution requires that replication already be in place, because evolution assumes that mutations appear during the replication. The RNA world hypothesis suggests that sequences contain information, but also catalyze origin of life chemistry. The problem with RNA world is that it starts with self-replicating systems. And those replicating systems require the scientist to inject information into the system to get even the simplest replication started.
34:56 How do scientists respond to the critiques of Darwinism proposed by intelligent design advocates? By and large, they accept them. They think that mutation and selection works once living systems are in place, but they realize it has no explanation for the origin of life or the sudden origin of body plans. (Tells about the conference of the Royal Society, where problems with Darwinian mechanisms were discussed, and the 2003 MIT Press book by Muller and Newman).
37:16 Why do people hold to Darwinian evolution in the face of these problems? Many scientists presuppose methodological naturalism, which requires that any explanation for the origin of life and the origin of major body plans involve materialist explanations only. No intelligent agents are allowed. The problems occur when assumption of naturalism causes scientists to propose incorrect explanations for what we observe in nature. It’s also not clear how naturalistic mechanisms could produce organisms who are capable of reason and free will.
40:43 Does naturalistic evolution have an answer for conscious minds, reasoning, free will? No, consider the work of atheist scholar Thomas Nagel, who argues in his book “Mind and Cosmos” (Oxford University Press 2012) that the existence of mind is a disproof of the neo-Darwinian explanation for life. Darwinism stops us from accepting the reality of minds.
42:06 So do naturalistic evolutionists have to explain away the mind as an illusion? First, we humans have immediate experience of consciousness, reason and free will. Second, our whole legal system is based on the idea free will, because you can’t hold someone guilty unless they chose to do something they knew was wrong. Third, we have an epidemic of suicide among young people. This is caused by a crisis of meaning. Intelligent design opens up the possibility of their being a mind behind the universe, who we could have a relationships with.
44:53 Why aren’t schools allowed to be honest about the problems with neo-Darwinian evolution? The intellignt design view is to that teachers should be allowed to teach all the vidence for Darwinian evolution, and also discuss some of the problems with the theory. Students learning science should not be told that everything is solved. Students learn science better when they are presented with peer-reviewed evidence for and against a theory, rather than being indoctrinated.
47:37 Is intelligent design theory connected to God? Intelligent design infers from the information content in nature that a mind with capabilities like ours injected information into living systems. Intelligent design is agnostic about the designer, because in principle, embodied or unembodied agents could inject information into living systems. Intelligent design is friendly to theism, because theists will immediately identify the mind as God. Furthermore, the fine-tuning in the initial conditions of the universe is another intelligent design argument. In that case, since the design occurs at the beginning of the universe, the intelligent agent acting prior to the creation of the universe would have to be supernatural, i.e. – God.
50:53 Can naturalists say that the imposition of “function” on a sequence is arbitrary, in the same way that the English language is arbitrary? This won’t work, because biological function is not arbitrary in the same way as language. Biological function is not arbitrary, because sequences can be tested for function objectively by observing whether sequences can perform functions necessary for life, e.g. – replication.
52:43 Doesn’t the multiverse explain away the improbabilities of the fine-tuning, the origin of life, and the development of life? No, because all models of the multiverse require fine-tuning in the mechanism that generates the different universes.
55:42 What about cosmological models that eliminate the beginning of the universe? The standard Big Bang model and the inflationary model both posit a beginning of the universe. There is also the Borde-Guth-Vilenkin theory which proves that any universe that is expanding requires a beginning. The only chance for naturalists is quantum cosmologies, but this doesn’t work because 1) it requires an abstract reality of mathematics to actualize the physical universe, but this presupposes a mind. 2) The model requires an earlier input of information, which can only have come from a mind.
If you listen to this lecture, or watch the video, and you enjoyed it, then please share. If you have questions, I can try to answer them for you – just leave your question in the comments, or shoot me an e-mail, or message me from the blog’s Facebook page, or direct message me on Twitter. I’ve invested a lot of time in this, and have been studying intelligent design since the late 1990s.
By the way, I listen to the Ben Shapiro podcast, (and the Andrew Klavan podcast), every day. I never miss an episode, and I think if you give them a try, you’ll enjoy them, too.
I noticed that Eric Chabot who runs the Ratio Christi chapter at the Ohio State University has arranged a lecture on the origin of life scheduled for tonight (Monday, October 28th, 2019). If any of you are free this evening, and near Columbus, Ohio, maybe you can make it to the lecture?
Recently, I watched lectures from a recent Science and Faith Conference that occurred at Park Cities Baptist Church in Dallas, Texas. I sent the lectures to my STEM women advisors to get their opinions. It was unanimous that Tour’s talk on origin of life research was the best. So let’s see his bio, then we’ll take a look at his lecture.
James M. Tour, a synthetic organic chemist, received his Bachelor of Science degree in chemistry from Syracuse University, his Ph.D. in synthetic organic and organometallic chemistry from Purdue University, and postdoctoral training in synthetic organic chemistry at the University of Wisconsin and Stanford University.
After spending 11 years on the faculty of the Department of Chemistry and Biochemistry at the University of South Carolina, he joined the Center for Nanoscale Science and Technology at Rice University in 1999 where he is presently the T. T. and W. F. Chao Professor of Chemistry, Professor of Computer Science, and Professor of Materials Science and NanoEngineering.
Tour’s scientific research areas include nanoelectronics, graphene electronics, silicon oxide electronics, carbon nanovectors for medical applications, green carbon research for enhanced oil recovery and environmentally friendly oil and gas extraction, graphene photovoltaics, carbon supercapacitors, lithium ion batteries, CO2 capture, water splitting to H2 and O2, water purification, carbon nanotube and graphene synthetic modifications, graphene oxide, carbon composites, hydrogen storage on nanoengineered carbon scaffolds, and synthesis of single-molecule nanomachines which includes molecular motors and nanocars.
[…]Tour has over 650 research publications and over 120 patents.
As he explains in the lecture, his research has frequently been used in the private sector to solve real world problems.
Rice University chemist James Tour almost defies description in a video now up of his amazing presentation at Discovery Institute’s 2019 Dallas Conference on Science and Faith.
At one point he asks for a show of hands of fellow synthetic chemists in the (large) audience. It turns out there are a couple and he demands that they stand up and call him a liar if anything he says isn’t true. His message is an alternatively scathing and hilarious indictment of claims from the origin-of-life studies community. Dr. Tour’s work in nanotechnology, an ulta-ultra-painstaking field, provides the backdrop for his demonstration that origins scientists don’t have the slightest idea how the first life was somehow naturally synthesized by blind, mindless forces.
The field hasn’t advanced an inch in 60-plus years. “Everyone’s clueless on this but no one wants to admit it.” Great scientists writing in the highest profile science journals are “lying to you” when they assert otherwise. “Show me the chemistry” of abiogenesis, he says. “It’s not there.”
Jim Tour is without parallel. Truly, I’d love to hear from our materialist critics how they would answer any of this.
At the conference, Tour’s lecture was accompanied by other great lectures on the origin of the universe and also the Cambrian explosion by Dr. Stephen C. Meyer. Jay Richards spoke on fine-tuning and habitability. You can find the links to those lectures on the Discovery Institute YouTube channel.
What we liked about the lecture by Dr. James Tour was that he did not dumb down the content for a church audience. I was sending screen captures of his slides and short video clips to my best friend Dina while I watched it. I was very excited to see someone so accomplished in his research and entrepreneurship being honest with the laypeople in the church. And I loved the church for letting him speak like a scientist. I didn’t understand everything he was saying about the science, but I always understood the point he was trying to make.
Let this lecture encourage to raise your children to focus on science, math, engineering and technology, because you can clearly see the value that we have in Dr. James Tour. We need hundreds more scientists who go to the best schools and make a difference.
I really hope that some of the younger Christians will understand the importance of making scientific evidence for a Creator and Designer more widely known. Learn the areas of science where God’s existence can be detected, and put the time in learning how to make those arguments.
You might remember Peter Millican from the debate he had with William Lane Craig. I ranked that debate as one of the 3 best I have ever seen, along with the first Craig vs Dacey debate and the second Craig vs Sinnott-Armstrong debate.
Science has revealed that the fundamental constants and forces of the cosmos appear to be exquisitely fine-tuned to allow a universe in which life can develop. Is God the best explanation of the incredibly improbable odds of the universe we live in being a life-permitting one?
Robin Collins is a Christian philosopher and a leading advocate of the argument for God from cosmic design. Peter Millican is an atheist philosopher at Oxford University. They debate the issues.
From ‘Unbelievable?’ on ‘Premier Christian Radio’, Saturday 19th March 2016.
As usual when the atheist is an expert, there is no snark or paraphrasing in the summary.
Brierley: What is the fine-tuning argument?
Collins: the fine-tuning is structure of the universe is extremely precisely set to allow the existing of conscious, embodied agents who are capable of moral behavior. There are 3 kinds of fine-tuning: 1) the laws of nature (mathematical formulas), 2) the constants of physics (numbers that are plugged into the equations), 3) the initial conditions of the universe. The fine-tuning exists not just because there are lots of possibilities, but there is something special about the actual state of affairs that we see. Every set of laws, parameters and initial conditions is equally improbable, but the vast majority of permutations do not permit life. The possible explanations: theism or the multiverse.
Brierley: How improbable are the numbers?
Collins: Once case is the cosmological constant (dark energy density), with is 1 part in (10 raised to 120th power). If larger, the universe expands too rapidly for galaxies and stars to form after the Big Bang. If smaller, the universe collapses in on itself before life could form. Another case is the initial distribution of mass energy to give us the low entropy we have that is necessary for life. The fine-tuning there is 1 part in (10 raised to the 10th power raised to the 123rd power).
Brierley: What do you think of the argument?
Millican: The argument is worth taking very seriously. I am a fan of the argument. The other arguments for God’s existence such as the ontological and cosmological arguments are very weak. But the fine-tuning argument has the right structure to deliver the conclusion that theists want. And it is different from the traditional design argument tended to focus on biological nature, which is not a strong argument. But the fine-tuning argument is strong because it precedes any sort of biological evolution. Although the design is present at the beginning of the universe, it is not visible until much later. The argument points to at least deism, and possibly theism. The argument is not based on ignorance, it is rooted in “the latest results from the frontiers of science” (his phrase).
Brierley: Is this the best argument from natural theology?
Collins: The cosmological argument makes theism viable intuitively, but there are some things that are puzzling, like the concept of the necessary being. But the fine-tuning argument is decisive.
Brierley: What’s are some objections to the fine-tuning argument?
Millican: The argument is based on recent physics, so we should be cautious because we maybe we will discover a natural explanation.
Brierley: Respond to that.
Collins: The cosmological constant has been around since 1980. But the direction that physics is moving in is that there are more constants and quantities being discovered that need to be fine-tuned, not less. Even if you had a grand unified theory, that would have to be have the fine-tuning pushed into it.
Millican: Since we have no experience of other laws and values from other universes, we don’t know whether these values can be other than they are. Psychologically, humans are prone to seeing purpose and patterns where there is none, so maybe that’s happening here.
Brierley: Respond to that.
Collins: It is possible to determine probabilities on a single universe case, for example using multiple ways of calculating Avogadro’s number all converging on the same number makes it more probable.
Millican: Yes, I willing to accept that these constants can take on other values, (“principle of indifference”). But maybe this principle be applied if the improbability were pushed up into the theory?
Collins: Even if you had a grand theory, selecting the grand theory from others would retain the improbability.
Brierley: What about the multiverse?
Millican: What if there are many, many different universes, and we happen to be in the one that is finely-tuned, then we should not be surprised to observe fine-tuning. Maybe a multiverse theory will be discovered in the future that would allow us to have these many universes with randomized constants and quantities. “I do think that it is a little bit of a promissary note”. I don’t think physics is pointing to this right now.
Brierley: Respond to that.
Collins: I agree it’s a promissary note. This is the strongest objection to the fine-tuning argument. But there are objections to the multiverse: 1) the fine-tuning is kicked back up to the multiverse generator has to be set just right to produce universes with different constants, 2) the multiverse is more likely to produce a small universe with Boltzmann brains that pop into existence and then out again, rather than a universe that contains conscious, embodied intelligent agents. I am working on a third response now that would show that the same constants that allow complex, embodied life ALSO allow the universe to be discoverable. This would negate the observer-selection effect required by the multiverse objection.
Brierley: Respond to that.
Millican: I don’t see why the multiverse generator has to be fine-tuned, since we don’t know what the multiverse generator is. I’m not impressed by the Boltzmann brains, but won’t discuss. We should be cautious about inferring design because maybe this is a case where we are seeing purpose and design where there is none.
Brierley: Can you negate the discoverability of the universe by saying that it might be psychological?
Collins: These things are not psychological. The selected value for the cosmic microwave background radiation is fine-tuned for life and for discoverability. It’s not merely a discoverability selection effect, it’s optimal for discoverability. If baryon-photon value were much smaller, we would have known that it was not optimal. So that judgment cannot be explained by
Millican: That’s a very interesting new twist.
Brierley: Give us your best objection.
Millican: I have two. 1) Even if you admit to the fine-tuning, this doesn’t show a being who is omnipotent and omnisicient. What the fine-tuning shows is that the designer is doing the best it can given the constraints from nature. If I were God, I would not have made the universe so big, and I wouldn’t have made it last 14 billion years, just to make one small area that supports life. An all-powerful God would have made the universe much smaller, and much younger. 2) The fine-tuning allows life to exist in other solar systems in other galaxies. What does this alien life elsewhere mean for traditional Christian theology? The existence of other alien civilizations argues against the truth of any one religion.
Brierley: Respond to those.
Collins: First objection: with a finite Creator, you run into the problem of having to push the design of that creature up one level, so you don’t really solve the fine-tuning problem. An unlimited being (non-material, not composed of parts) does not require fine-tuning. The fine-tuning is more compatible with theism than atheism. Second objection: I actually do think that it is likely that are other universes, and life in other galaxies and stars, and the doctrine of the Incarnation is easily adaptable to that, because God can take on multiple natures to appear to different alien civilizations.
I highly recommend watching the lecture, and looking at the slides. The quality of the video and the content is first class. There is some Q&A (9 minutes) at the end of the lecture.
intelligent design is concerned with measuring the information-creating capabilities of natural forces like mutation and selection
Darwinists think that random mutations and natural selection can explain the origin and diversification of living systems
Darwinian mechanisms are capable of explaining small-scale adaptive changes within types of organisms
but there is skepticism, even among naturalists, that Darwinian mechanisms can explain the origin of animal designs
even if you concede that Darwinism can account for all of the basic animal body plans, there is still the problem of life’s origin
can Darwinian mechanisms explain the origin of the first life? Is there a good naturalistic hypothesis to explain it?
there are at least two places in the history of life where new information is needed: origin of life, and Cambrian explosion
overview of the structure of DNA and protein synthesis (he has helpful pictures and he uses the snap lock blocks, too)
the DNA molecule is composed of a sequence of bases that code for proteins, and the sequence is carefully selected to have biological function
meaningful sequences of things like computer code, English sentences, etc. require an adequate cause
it is very hard to arrive at a meaningful sequence of a non-trivial length by randomly picking symbols/letters
although any random sequence of letters is improbable, the vast majority of sequences are gibberish/non-compiling code
similarly, most random sequences of amino acids are lab-proven (Doug Axe’s work) to be non-functional gibberish
the research showing this was conducted at Cambridge University and published in the Journal of Molecular Biology
so, random mutation cannot explain the origin of the first living cell
however, even natural selection coupled with random mutation cannot explain the first living cell
there must already be replication in order for mutation and selection to work, so they can’t explain the first replicator
but the origin of life is the origin of the first replicator – there is no replication prior to the first replicator
the information in the first replicator cannot be explained by law, such as by chemical bonding affinities
the amino acids are attached like magnetic letters on a refrigerator
the magnetic force sticks the letters ON the fridge, but they don’t determine the specific sequence of the letters
if laws did determine the sequence of letters, then the sequences would be repetitive
the three materialist explanations – chance alone, chance and law, law alone – are not adequate to explain the effect
the best explanation is that an intelligent cause is responsible for the biological explanation in the first replicator
we know that intelligent causes can produce functional sequences of information, e.g. – English, Java code
the structure and design of DNA matches up nicely with the design patterns used by software engineers (like WK!)
There are some very good tips in this lecture so that you will be able to explain intelligent design to others in simple ways, using everyday household items and children’s toys to symbolize the amino acids, proteins, sugar phosphate backbones, etc.
Proteins are constructed from a sequence of amino acids:
Proteins sticking onto the double helix structure of DNA:
I highly, highly recommend this lecture. You will be delighted and you will learn something.
Here is an article that gives a general overview of how intelligent design challenges. If you want to read something more detailed about the material that he is covering in the lecture above related to the origin of life, there is a pretty good article here.
There is a good breakdown of some of the slides with helpful flow charts here on Uncommon Descent.