Tag Archives: Naturalism

News

Study: the early Earth’s atmosphere contained oxygen

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Here’s a paper published in the prestigious peer-reviewed science journal Nature, entitled “The oxidation state of Hadean magmas and implications for early Earth’s atmosphere”. This paper is significant because it undermines naturalistic scenarios for the origin of life.

Evolution News explains what the paper is about.

Excerpt:

A recent Nature publication reports a new technique for measuring the oxygen levels in Earth’s atmosphere some 4.4 billion years ago. The authors found that by studying cerium oxidation states in zircon, a compound formed from volcanic magma, they could ascertain the oxidation levels in the early earth. Their findings suggest that the early Earth’s oxygen levels were very close to current levels.

[…]Miller and Urey conducted experiments to show that under certain atmospheric conditions and with the right kind of electrical charge, several amino acids could form from inorganic compounds such as methane, ammonia, and water. Several experiments have been done using various inorganic starting materials, all yielding a few amino acids; however, one key aspect of all of these experiments was the lack of oxygen.

If the atmosphere has oxygen (or other oxidants) in it, then it is an oxidizing atmosphere. If the atmosphere lacks oxygen, then it is either inert or a reducing atmosphere. Think of a metal that has been left outside, maybe a piece of iron. That metal will eventually rust. Rusting is the result of the metal being oxidized. With organic reactions, such as the ones that produce amino acids, it is very important that no oxygen be present, or it will quench the reaction. Scientists, therefore, concluded that the early Earth must have been a reducing environment when life first formed (or the building blocks of life first formed) because that was the best environment for producing amino acids. The atmosphere eventually accumulated oxygen, but life did not form in an oxidative environment.

The problem with this hypothesis is that it is based on the assumption that organic life must have formed from inorganic materials. That is why the early Earth must have been a reducing atmosphere. Research has been accumulating for more than thirty years, however, suggesting that the early Earth likely did have oxygen present.

[…]Their findings not only showed that oxygen was present in the early Earth atmosphere, something that has been shown in other studies, but that oxygen was present as early as 4.4 billion years ago. This takes the window of time available for life to have begun, by an origin-of-life scenario like the RNA-first world, and reduces it to an incredibly short amount of time. Several factors need to coincide in order for nucleotides or amino acids to form from purely naturalistic circumstances (chance and chemistry). The specific conditions required already made purely naturalist origin-of-life scenarios highly unlikely. Drastically reducing the amount of time available, adding that to the other conditions needing to be fulfilled, makes the RNA world hypothesis or a Miller-Urey-like synthesis of amino acids simply impossible.

So here’s where we stand. If you are a materialist, then you need a reducing environment on the early Earth in order to get organic building blocks (amino acids) from inorganic materials. However, the production of these organic building blocks (amino acids) requires that the early Earth atmosphere be oxygen-free. And the problem with this new research, which confirms previous research, is that the early Earth contained huge amounts of oxygen – the same amount of oxygen as we have today. This is lethal to naturalistic scenarios for creating the building blocks of life on the Earth’s surface.

Other problems

If you would like to read a helpful overview of the problems with a naturalistic scenario for the origin of life, check out this article by Casey Luskin.

Excerpt:

The “origin of life” (OOL) is best described as the chemical and physical processes that brought into existence the first self-replicating molecule. It differs from the “evolution of life” because Darwinian evolution employs mutation and natural selection to change organisms, which requires reproduction. Since there was no reproduction before the first life, no “mutation – selection” mechanism was operating to build complexity. Hence, OOL theories cannot rely upon natural selection to increase complexity and must create the first life using only the laws of chemistry and physics.

There are so many problems with purely natural explanations for the chemical origin of life on earth that many scientists have already abandoned all hopes that life had a natural origin on earth. Skeptical scientists include Francis Crick (solved the 3-dimensional structure of DNA) and Fred Hoyle (famous British cosmologist and mathematician), who, in an attempt to retain their atheistic worldviews, then propose outrageously untestable cosmological models or easily falsifiable extra-terrestrial-origin-of-life / panspermia scenarios which still do not account for the natural origin of life. So drastic is the evidence that Scientific American editor John Horgan wrote, “[i]f I were a creationist, I would cease attacking the theory of evolution … and focus instead on the origin of life. This is by far the weakest strut of the chassis of modern biology.”3

The article goes over the standard problems with naturalistic scenarios of the origin of life: wrong atmosphere, harmful UV radiation, interfering cross-reactions, oxygen levels, meteorite impacts, chirality, etc.

Most people who are talking about intelligent design at the origin of life talk about the information problem – how do you get the amino acids to form proteins and how do you get nucleotide bases to code for amino acids? But the starting point for solving the sequencing problem is the construction of the amino acids – there has to be a plausible naturalistic scenario to form them.

News

520 million year old shrimp heart is more complex than those of today

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First, the straight story on the scientific discovery, as reported in Bioscience Technology.

Excerpt:

520 million years ago, the first known animal heart was formed.

It was the heart of an ancient shrimp, and quite a heart it was. For it, and its vascular system, have been found to be more complex than that of modern shrimp, researchers reported in a recent Nature Communications. Its cardiovascular system was apparently one of evolution’s first templates for modern cardiovascular systems. Significant streamlining has occurred since.

The find comes on the heels of an equally important one by the same group: that of a stunningly intact nervous system from the same breed of primordial shrimp: Fuxianhuia protensa.

“This is only the second case of the description of a cardiovascular system in a Cambrian arthropod, the first one being that of the inch-long Marrella from Burgess Shale,” emailed Diego Garcia-Bellido of the University of Adelaide, who co-discovered that first arthropod while at the University of Cambridge. Garcia-Bellido was not involved in the new study. “This new finding of a cardiovascular system in a larger animal (Fuxianhuia is about two to three times as large, thus more detail), together with a fantastically preserved, and very complex, nervous system, unknown in Marrella, and the gut, make it probably the most complete arthropod internal anatomy known in the fossil record.”

The main conclusion drawn, said Garcia-Bellido: “The level of complexity of the Fuxianhuia was extremely high, considering that we are studying some of the oldest animals on Earth.”

Now, if you’re like me, you’re skeptical that soft tissues can be preserved in the fossil record, but:

Said the paleontologist via email: “As we know, most soft tissue of animals tends to decay away once the animals died, so often only the hard parts of animal body (bones, shells, teeth, etc.) are preserved in fossils. However, under very exceptional circumstances, soft tissue and anatomical organ system can also be preserved in fossils.”

Keep in mind that 520 mya is right after the Cambrian explosion that intelligent design people like me love to talk about. I mean you are going from single-celled life to complex organ types in a few million years. Fine if you are an ID proponent, but devastating if you are a Darwinian naturalist.

Cambrian Explosion
The Cambrian Explosion: the origin of phyla

If you are a naturalist, then you need the fossil record to go from simple to complex. The trouble is that all the simple to complex in that image is pure speculation at this point – and not for lack of trying, either.

You know, I am writing this on Saturday night, and in a happier world, this discovery would be discussed tomorrow in every Christian church in the land. This is the kind of data that Christians should be familiar with to check the presupposition of naturalism which is lethal to rational thought. If only we were more focused on truth than on signing and feelings in church. If only we were not so scared of traditional dating of fossils. Maybe then we would be getting somewhere in the culture wars.

Podcasts

Mike Licona and Bart Ehrman debate the resurrection of Jesus

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From the Unbelievable radio show.

Details:

Bart Ehrman is well known as a US New Testament Scholar who lost his Christian faith and now questions many core precepts of Christianity, including the Resurrection of Jesus.  When Mike Licona had doubts he devoted himself to investigating the evidence and became convinced that Jesus resurrection is the only rational explanation for the facts.

They debate key historical facts about the resurrection – are the letters of Paul that report the resurrection and the Gospel accounts trustworthy or theologised and changed with time?  What about apparent contradictions between the Gospels? Does the consensus of scholars count as evidence, or is there a Christian bias?  Can a miracle count as an explanation for historical data?

The MP3 file is here.

Snarky summary of the radio debate: (items with * are my made-up paraphrases/clarifications)

This has got to be one of my silliest summaries, but Ehrman makes me so annoyed.

Ehrman:
– my new book is about forgeries in the ancient world
– some books were falsely attributed to prominent Christian figures
– there are mistakes in the Bible
– there are mistakes in the resurrection narratives
– the defeat of inerrancy led to his conversion to liberal Christianity
– the problem of evil and suffering caused him to become a non-Christian

Licona:
– there are minimal facts that are agreed to by a broad spectrum of scholars
– the minimal facts are accepted because they pass standard historical criteria
– Fact 1: Jesus died by crucifixion
– Fact 2: Individuals and groups had visions of Jesus after his death
– Fact 3: Paul, a skeptic and an enemy, had an appearance of Jesus that converted him
– these facts are agreed to atheist scholars, liberal scholars, etc.
– virtually 100% of scholars agree with these three facts
– there is no naturalistic explanation of these three facts
– therefore, the best explanation of these three facts is that God raised Jesus from the dead

Ehrman:
– all historians would accept these three facts, except for maybe the group appearances
– the death of Jesus is irrelevant to the resurrection
– the second and third point can be collapsed together
– so really there is only one fact

Moderator:
– the crucifixion is relevant because Muslims don’t admit that fact
– the crucifixion important because it establishes a resurrection, not a resuscitation

Ehrman:
– well, if the point is that he died, then yes, this does require a resurrection

Licona:
– the crucifixion refutes Muslims who deny that Jesus died
– the crucifixion refutes the apparent death theory (swoon theory)
– the death is required for a bodily resurrection
– it’s important to know what facts most scholars, regardless of worldview, agree on
– it’s important to emphasize that Licona is working from historical bedrock facts
– the resurrection is the best explanation for the historical bedrock facts

Ehrman:
– you are trying to list 3 things, but really it is just one thing – the appearances
– and not ALL scholars agree that the group visions occurred

Licona:
– name one prominent scholar who denies the group appearances

Ehrman:
– the radically leftist atheist nutcase John Dominic Crossan denies the group appearances
* Crossan is so far on the left that I look like a nutcase for even citing him
* Crossan believes in the Secret Gospel of Mark, which is a hoax – but I still cite Crossan
* Crossan believes that the synoptics are LATER than gnostic forged gospels – but I still cite Crossan
* Crossan presupposes atheism, so he cannot admit to miracle stories as a pre-supposition – but I still cite Crossan
* Crossan pre-supposes religious pluralism, so he cannot allow any exclusive claims Christians make – but I still cite Crossan
* Crossan is a good historian, it’s just that he is so far to the left that no one – NO ONE – agrees with his all of crazy theories
* I think it is a good idea to cite historians who pre-suppose atheism and political correctness before they sit down to do history

Licona:
– let me explain why most scholars accept the individual and group post-mortem appearances
– the best source for the appearances is the early creed recorded by Paul in 1 Cor 15:3-8
– Paul himself had an appearance of Jesus after Jesus’ death
– Paul received this material from a source very soon after the appearances – within 1-3 years
– we know that Paul met with Jesus disciples multiple times prior to writing
– Paul probably received it from Peter and James, who were themselves eyewitnesses

Moderator:
– this early dating presumably rules out legend

Licona:
– well legends CAN start quickly
– it does show that Paul was an eyewitness
– it does show that Paul was in contact with reliable eyewitnesses

Ehrman:
– 1 Corinthians is written around 55 AD, twenty-five years after Jesus died
– it is not implausible that Paul got the creed from the disciples, who were eyewitnesses
– but you don’t need a long time for legends to emerge, so that is a possibility

Licona:
– only about 3% of people could read and write back them
– instead, people had enormous capacity for memorization
– the Pharisees were particularly good at memorization
– Jews were very serious about passing along traditions accurately
– Paul, a prominent Pharisee, would have been capable of passing on early creeds accurately
– Paul, in 1 Cor 7, shows that he is willing to separate his opinions from authentic tradition
– Paul had an opportunity in 1 Cor 7 to put words into Jesus’ mouth, but he wouldn’t do it

Ehrman:
– cultural anthropologists show that things do get changed in some oral cultures
– in these oral cultures, it is assumed that the story teller will change the story
– only in written cultures are they careful to avoid changing the story
– in the New Testament, you can compare the same story in two different gospels, there are differences

Licona:
– Ehrman is right that the gospel writers pick and choose things from the oral tradition that they want to include in their gospels
– different oral tradition transmission schemes have more or less embellishment
– african tribes embellish more, rabbinic teaching embellishes less
* Jesus’ followers would have viewed him as a rabbi, and been careful about adding to his teachings
– Paul, an eyewitness, probably received the creed in 1 Cor 15 from other eyewitnesses
– Paul speaks about going twice to Jerusalem in Galatians
– he is meeting with Peter and James to check his facts

Ehrman:
– when you look at Mark and John, there are lots of differences in the narrative

Licona:
– I agree that the gospels have differences, but the oral tradition is likely fixed

Ehrman:
– but Mark and John have different sayings
– why doesn’t Mark have the same explicit high Christology that John has?

Licona:
– first, John is trying to weave the oral tradition into a compelling story
– and second, when you look in Mark, the high Christology is there in the Son of Man sayings
– the apocalyptic Son of Man is in Mark, and everywhere in the New Testament

Ehrman:
– the “apocalyptic Son of Man” isn’t in John

Licona:
– what about in John 9 with the man who was born blind

Ehrman:
– where is the apocalyptic part?

Licona:
– the healed man worships Jesus because he is the Son of Man
– that links to the apocalypic passages in the Old Testament

Moderator:
– what about the differences between the gospels?

Ehrman:
* well, now is the time for me to set up an inerrantist straw man and then knock it down!
* who was at the empty tomb: one angel or two angels? we don’t know, so the whole Bible is false!
* I used to be an inerrantist, so one minor difference is enough for me to dump the whole Bible
* I’ll kill you, you stupid straw man! I hate you, Moody Bible Institute! You lied to me!

Licona:
– many of these problems can be solved by realizing that the gospel writers compress time
– the stories don’t have to list ALL the characters in every scene
– you don’t have to force the Bible to meet some sort of wooden chronology
– the main thing is that the events happened, not that the descriptions match word for word across sources

Ehrman:
– you can’t infer a miracle from history, David Hume says so
* extraordinary claims require extraordinary evidence, David Hume says so
* no I don’t know what begging the question is, I’m not a philosopher
* no I don’t remember when Bill Craig kicked my ass on this Hume objection in our debate
– the New Testament gospels contradict each other at every point, they are not reliable at all!
* they cannot even agree what Jesus’ name is! There are 1 trillion variants of Jesus’ name!
* “one angel vs two angels” proves that the gospels contradict each other at every point
* my expansive list of FOUR theologically insignificant variants proves that the gospels contradict each other at every point

Licona:
– um, the gospels agree on the central narrative and disagree on the peripherals
– and they agree on the minimal facts I presented, even if they disagree about the number of angels

Ehrman:
* they have to agree on everything and be inerrant! The Moody Straw Man Bible Institute says so!
* I really really really need to have the number of angels be the same, or Jesus didn’t die on the cross

Licona:
– but you don’t deny any of the three minimal facts I presented (crucifixion, appearances, Paul)

Ehrman:
– well, I don’t know if the group appearances occurred – maybe they did
– i think Jesus died on the cross, and I think that people said they saw him alive afterward

Licona:
– if you deny the minimal facts, then you are outside the majority of scholars

Ehrman:
– the majority of scholars who agree to the minimal facts you presented are Christians
* Gerd Ludemann is an atheist Christian
* James Crossley is an atheist Christian
* Hector Avalos is an atheist Christian
* the majority of the atheist scholars are all Christians!
– VIRTUALLY EVERYBODY IN THE SOCIETY OF BIBLICAL LITERATURE IS A CHRISTIAN!!! (Yes, he said that)

Licona:
– you really think so?

Ehrman
– you name one non-Christian in the SBL

Licona:
– (incredulous) um, John Dominic Crossan is an atheist

Ehrman:
– but he CLAIMS TO BE A CHRISTIAN so that means HE IS A CHRISTIAN
* all you have to do to be a Christian is claim to be one
* you can even deny the existence of God and the divinity of Christ and still be one, you bigot!

Licona:
– would Jesus or the apostles recognize a Christian as being someone who doubts God’s existence

Ehrman:
– my view is that Jesus and the apostles would not recognize evangelical Christians as Christians
* a non-theist can be a Christian just by claiming to be one, but evangelical Christians are not Christians even if they claim to be Christians
– Christians can’t record accurate history about the resurrection because they are biased

Licona:
– on your view, if a person is a Christian then he can’t write about the evidence for the resurrection
– so then similarly, you would not allow Jews to write about the historicity of the Holocaust
– because you think that if people have an interest in what they are recording then they can’t be objective
– but you have to consider the evidence we have, taking the biases of the sources into account

Ehrman:
– but the only people who believe in the resurrection are Christians!

Licona:
– well, people can consider the evidence for the resurrection as non-Christians
– and then if they accept it they can become Christians

Moderator:
– what about your bias? you don’t believe in God – doesn’t that pre-supposition affect how you do history?

Ehrman:
– well, I presuppose naturalism, so I can’t admit to anything in history that implicates supernatural causes
* no I have never heard of the arguments for the Big Bang, fine-tuning, origin of life, Cambrian explosion, irreducible complexity, limits on mutations creating information, habitability and so on – I never heard about that stuff from my atheist university professors and even if I had I would have been expelled for talking about it because that would make people feel bad about their sinning

Licona:
– so it’s not bias you are concerned about, it’s that you don’t want history to contradict your untested religion of naturalism?
– why not just do the history without pre-suppositions to gather the minimal facts and then see what the best explanation is?

Ehrman:
* well God is out of bounds as an explanation because I could not have got my PhD if I mentioned God
* I really needed my smart atheist professors to like me and give me good grades so God is RIGHT OUT
* ideas like a real God and moral laws and Hell makes my atheist professors uncomfortable and that means low grades for me
* I’m not really interested in butting heads with professors – it’s easier to just agree with them and move on to selling books to the gullible
* My books are much more sensational than Dan Brown books, so please buy lots of them!

Licona:
– what if the historical evidence is good enough to show that Jesus rose from the dead?

Ehrman:
– well I would not call someone rising from the dead a miracle – I would call it weird
* I also think that the Big Bang is “weird” but that doesn’t prove that God created the universe out of nothing
* if it’s a miracle then I’m going to have to not sin, and maybe even go to Hell, and we can’t have that

Licona:
– well, you accept the three minimal facts
– what if we try all the naturalistic explanations for those three facts and there are problems with all of them?
– what if the resurrection is the best explanation for the three minimal facts?

Ehrman:
– but I want to arbitrarily rule God put because I want to pre-suppose naturalism
– there is not historical reason I have to rule put supernatural explanations a priori

Licona:
– I think you are struggling with the theological implications of a historical conclusion

Ehrman:
– well when you do theology, you have to avoid grounding your theology on science or history
– theology has to be completely made up or it’s not good theology

Licona:
– I think you are letting your dislike of the implications of the resurrection determine your historical conclusions
– you have to use historical methods to gather the minimal facts that every scholar accepts, regardless of worldview
– then you weigh ALL the hypotheses, natural and supernatural, that could account for these minimal facts
– then you choose the hypothesis that best explains the minimal facts