Tag Archives: Reason

Can naturalism account for the origin of the 20 amino acids in living systems?

Do the Miller-Urey experiments simulate the early Earth?
Do the Miller-Urey experiments simulate the early Earth?

The origin of life

There are two problems related to the origin of the first living cell, on naturalism:

  1. The problem of getting the building blocks needed to create life – i.e. the amino acids
  2. The problem of creating the functional sequences of amino acids and proteins that can support the minimal operations of a simple living cell

Normally, I concede the first problem and grant the naturalist all the building blocks he needs. This is because step 2 is impossible. There is no way, on naturalism, to form the sequences of amino acids that will fold up into proteins, and then to form the sequences of proteins that can be used to form everything else in the cell, including the DNA itself. But that’s a topic for a separate post.

Today, let’s take a look at the problems with step 1.

The problem of getting the building blocks of life

Now you may have heard that some scientists managed to spark some gasses to generate most of the 20 amino acids found in living systems. These experiments are called the “Miller-Urey” experiments.

The IDEA center has a nice summary of origin-of-life research that explains a few of the main problems with step 1.

Miler and Urey used the wrong gasses:

Miller’s experiment requires a reducing methane and ammonia atmosphere,11, 12 however geochemical evidence says the atmosphere was hydrogen, water, and carbon dioxide (non-reducing).15, 16 The only amino acid produced in a such an atmosphere is glycine (and only when the hydrogen content is unreasonably high), and could not form the necessary building blocks of life.11

Miller and Urey didn’t account for UV of molecular instability:

Not only would UV radiation destroy any molecules that were made, but their own short lifespans would also greatly limit their numbers. For example, at 100ºC (boiling point of water), the half lives of the nucleic acids Adenine and Guanine are 1 year, uracil is 12 years, and cytozine is 19 days20 (nucleic acids and other important proteins such as chlorophyll and hemoglobin have never been synthesized in origin-of-life type experiments19).

Miller and Urey didn’t account for molecular oxygen:

We all have know ozone in the upper atmosphere protects life from harmful UV radiation. However, ozone is composed of oxygen which is the very gas that Stanley Miller-type experiments avoided, for it prevents the synthesis of organic molecules like the ones obtained from the experiments! Pre-biotic synthesis is in a “damned if you do, damned if you don’t” scenario. The chemistry does not work if there is oxygen because the atmosphere would be non-reducing, but if there is no UV-light-blocking oxygen (i.e. ozone – O3) in the atmosphere, the amino acids would be quickly destroyed by extremely high amounts of UV light (which would have been 100 times stronger than today on the early earth).20, 21, 22 This radiation could destroy methane within a few tens of years,23 and atmospheric ammonia within 30,000 years.15

And there were three other problems too:

At best the processes would likely create a dilute “thin soup,”24 destroyed by meteorite impacts every 10 million years.20, 25 This severely limits the time available to create pre-biotic chemicals and allow for the OOL.

Chemically speaking, life uses only “left-handed” (“L”) amino acids and “right-handed” (“R)” genetic molecules. This is called “chirality,” and any account of the origin of life must somehow explain the origin of chirality. Nearly all chemical reactions produce “racemic” mixtures–mixtures with products that are 50% L and 50% R.

Two more problems are not mentioned in the article. A non-peptide bond anywhere in the chain will ruin the chain. You need around 200 amino acids to make a protein. If any of the bonds is not a peptide bond, the chain will not work in a living system. Additionally, the article does not mention the need for the experimenter to intervene in order to prevent interfering cross-reactions that would prevent the amino acids from forming.

Usually when you hear the origin of life debated, they sort of skirt about the problem of where the amino acids come from, but there is no reason not to make that an issue. The naturalist has to explain how the first living cell could come about naturalistically.

Positive arguments for Christian theism

 

William Lane Craig debates Peter Atkins: Does God Exist?

Apologetics 315 posted the video of a debate from the Reasonable Faith speaking tour in the UK:

This is a must-see debate. It was extremely fun to watch.

Details:

On Wednesday 26th October 2011 William Lane Craig debated Peter Atkins on the topic: Does God Exist? This debate took place at the University of Manchester  as part of the UK Reasonable Faith Tour with William Lane Craig. The debate was chaired by Christopher Whitehead, Head of Chemistry School at the University. Post-debate discussion was moderated by Peter S Williams, Philosopher in Residence at the Damaris Trust, UK.

Dr. William Lane Craig:

William Lane Craig (born August 23, 1949) is an American analytic philosopher, philosophical theologian, and Christian apologist. He is known for his work on the philosophy of time and the philosophy of religion, specifically the existence of God and the defense of Christian theism. He has authored or edited over 30 books including The Kalam Cosmological Argument (1979), Theism, Atheism and Big Bang Cosmology(co-authored with Quentin Smith, 1993), Time and Eternity: Exploring God’s Relationship to Time (2001), and Einstein, Relativity and Absolute Simultaneity (co-edited with Quentin Smith, 2007).

Craig received a Bachelor of Arts degree in communications from Wheaton College, Illinois, in 1971 and two summa cum laudemaster’s degrees from Trinity Evangelical Divinity School in Deerfield, Illinois, in 1975, in philosophy of religion and ecclesiastical history. He earned a Ph.D. in philosophy under John Hick at the University of Birmingham, England in 1977 and a Th.D. underWolfhart Pannenberg at the University of Munich in 1984.

Dr. Peter Atkins:

Peter William Atkins (born 10 August 1940) is a British chemist and former Professor of Chemistry at the University of Oxford and a Fellow of Lincoln College. He is a prolific writer of popular chemistry textbooks, including Physical ChemistryInorganic Chemistry, and Molecular Quantum Mechanics. Atkins is also the author of a number of science books for the general public, including Atkins’ Molecules and Galileo’s Finger: The Ten Great Ideas of Science.

Atkins studied chemistry at the University of Leicester, obtaining a bachelor’s degree in chemistry, and – in 1964 – a PhD for research into electron spin resonance spectroscopy, and other aspects of theoretical chemistry. Atkins then took a postdoctoral position at the UCLA as aHarkness Fellow of the Commonwealth fund. He returned to Oxford in 1965 as fellow and tutor of Lincoln College, and lecturer in physical chemistry (later, professor of physical chemistry).

You can get the audio of the debate here, along with links to their previous debate from 1998. This debate is accessible and understandable to novice-level Christians.

I am happy when debates like this come out. I have friends who are Christians who doubt the importance of apologetics in evangelism, because they don’t think that apologists can prove anything or win arguments. I have friends who are skeptical of using arguments that assume a 14-billion year old universe, because they think that the Big Bang is compatible with atheism (!). I have friends who think that philosophical arguments have no persuasive force. I have friends who think that nothing can be proven from history, beyond a reasonable doubt. I have co-workers who ask me whether anyone wins these debates. I think that this debate answers all of those questions.

This debate clearly shows why Christians should not shy away from studying science, philosophy and history. We will not discover anything that harms Christian theism by thinking logically and by looking at the evidence. To the contrary, it is the atheist who makes war on the progress of science, and who is forced to resist the clear experimental evidence, and to resort to baseless speculations and blind faith. If you want to see a good debate with an intelligent atheist, I recommend watching the debate between William Lane Craig and Peter Millican instead. But if you want to see a really, really overwhelming defeat for atheism, watch this debate. It is very clear at the end of this debate why Richard Dawkins refused to debate William Lane Craig at Oxford.

SUMMARY OF THE OPENING SPEECHES

I only had time to summarize the first two speeches. Keep in mind that Dr. Craig always shines in his rebuttals, and this debate is no different. So you’ll want to watch those rebuttals. Dr. Atkins literally says in this debate in his first rebuttal “There was nothing here originally. There is nothing here now. But it is an interesting form of nothing which seems to be something.” And the audience laughs nervously. This debate is like that. You will see a clear winner and clear loser in this debate. This fight is decided by knockout.

William Lane Craig opening speech:

1. the origin of the universe
2. the moral argument
3. the resurrection of Jesus

Peter Atkins opening speech:

1. Dr. Craig is stupid, lazy and evil:
– Dr. Craig’s arguments are old: from the 11th century! Old arguments can’t be true
– Dr. Craig is just asserting that “God did it” because he is lazy
– Dr. Craig feels pressured to agree with the theistic majority
– Dr. Craig needs a psychological crutch to comfort him
– Dr. Craig is fearful of death
– Dr. Craig is just wishing for an eternal life of bliss
– Dr. Craig is driven by his heart, and not by his head

2. Origin of the universe:
– Maybe the universe is eternal and has no beginning – we don’t know
– Maybe mommy universes can give birth to daughter universes
– It is naive to think that a cause is needed to cause the creation of the universe from nothing
– Science is just about to show how it is possible that something appears out of nothing without cause
– Some scientists have already begun to speculate about about how something can come into being out of nothing
– Maybe nothing is not really nothing, but it is actually something
– It would be admitting defeat to say that God created the universe out of nothing

3. Fine-Tuning:
– It could be the case that the fundamental constants are not variable
– It could be the case that the fine-tuning of the cosmic constants is a happy accident
– It could be the case that there are billions of billions of unobservable universes that are not fine tuned
– It could be the case that the cosmic constants in these billions and billions of unobservable universes are all random so that some are fine-tuned
– Anyone who infers that an intelligence is the best explanation of a finely-tuned set of life-permitting cosmic constants is lazy

4. Purpose:
– Philosophers and theologians are stupid
– I don’t think that there is purpose in the universe
– I think that the universe is more grand if there is no purpose, so there is no purpose

5. Miracles:
– I don’t think that miracles happen
– The resurrection is a fabrication
– It could be the case that Jesus didn’t exist
– It could be the case that Jesus wasn’t really crucified
– It could be the case that Jesus didn’t  really die after being crucified
– It could be the case that the disciples stole his body
– It could be the case that the women went to the wrong hole in the ground
– the gospels are political propaganda written long after the events they are reporting on

6. Theodicy:
– God has no morally sufficient reason for allowing humans to perform actions that result in suffering
– God has no morally sufficient reason for allowing nature to cause suffering

7. Morality:
–  customs and conventions emerges arbitrarily in different times and places based on an awareness of the consequences of actions, as well as various anecdotes and experiences
–  these customs and conventions are decided based on the goal for survival, in much the same way as politeness and manners emerge for decorum and to avoid offense
– it is childish to presume that there is an umpire God who decides moral values and duties

8. Religious believers are stupid, lazy and evil:
– the notion of God has arisen because people are stupid and want to be comforted
– there are no arguments or evidences for belief in God
– people who believe in God do not think, but instead take refuge in incomprehensible nonsense

Serial sexual relationships, multi-partner fertility, single motherhood and fatherlessness

A man leading a woman upward
A man leading a woman upward

Here’s an article from the policy journal National Affairs (editor is Yuval Levin) that has some statistics about single motherhood by choice. When you are reading the article, keep in mind that most people who lean left are so influenced by feminism that they seem to think that women trip and fall accidentally, and end up pregnant from random men. I don’t think that we should minimize the fact that most women freely choose the men who treat them badly.

Excerpt:

Pew Foundation and Centers for Disease Control and Prevention surveys indicate that, on a range of measures, a very large share of fathers who do not live with their children have virtually no meaningful relationship with their non-custodial children. More than one-half report that they had not shared a meal with their non-custodial children in the last four weeks, while nearly two-thirds had not read to their children and a full three-quarters had not done homework with them. Moreover, these are self-reported figures, so the share of fathers with no relationship to their non-custodial children is most likely even higher.

When fathers form new romantic partnerships, their involvement with children from previous relationships declines. Jo Jones and William Mosher report that, while 39% of fathers in new romantic relationships had shared a meal with their non-custodial 5- to 18-year-old children at least once in the past month, 62% of those not in a new romantic relationship had. While 55% of fathers in a new romantic relationship had spoken with their 5- to 18-year-old non-custodial children, 77% of those not in a new romantic relationship had.

In addition, men with less education are more likely to exhibit absent-father behavior. Whereas 70% of fathers with at least some college had talked to their non-custodial 5- to 18-year-old children at least once in the past month, 59% of those with no more than a high-school degree had done so. While 74% of fathers with at least some college had played with their non-custodial child under 5 years old at least once in the past month, only 53% of those fathers with no more than a high-school degree had.

Multi-partner fertility is not only associated with father abandonment, it also adversely impacts child-maltreatment rates. Women attempting to balance work, the demands of new relationships, and the challenges of raising children are faced with a set of chronic stressors that often lead to child abuse and neglect. The shift from welfare to work increased these stresses. Partially as a result, between 1993 and 2005, the rate of overall abuse, physical abuse, sexual abuse, and serious abuse, respectively, rose by 22%, 14%, 49%, and 34% for children living with single mothers. By contrast, for children living in two-parent households, child-abuse rates fell on each of the four measures (by 42%, 24%, 62%, and 37%, respectively). By 2005, the child-abuse rate was 2.9 per 1,000 for children living with married biological parents but 10.2 for those living with a single parent and no partner, according to the U.S. Department of Health and Human Services. This disparity cannot be explained solely by socioeconomic status since the abuse rate for children in families of all kinds in the lowest socioeconomic group was still lower than that for children living in single-parent households.

Multi-partner fertility also increases child-abuse rates in a second way: the presence of non-biological fathers in the house. Child abuse in households with single mothers triples when they live with a man other than the child’s father. Child-maltreatment rates are actually lower in black than white households when the mother lives alone. But unfortunately, many men bring their job and other frustrations into the home, creating abusive situations. As a result, when a partner is present, the black rates on all three measures of child maltreatment — emotional, physical, and endangerment — are almost double the white rates. In addition, rates of intimate violence are over 12 times higher for single mothers than for married mothers.

Edin and Nelson ignore the subject of abusive behavior in men. Instead, despite the fathers’ caring attitudes, we are told, the mothers kick them out because they don’t earn sufficient income. And on the impact of multi-partner fertility on children, Doing the Best I Can offers one benign sentence: “Kids are amazingly resilient, but the rate of family change among children of unwed fathers has become so rapid, and now leads to such complicated family structures, that kids might have a hard time adjusting.”

Academic studies paint a much grimmer picture. After surveying the evidence, Sara McLanahan and Christopher Jencks concluded earlier this year,

[A] father’s absence increases antisocial behavior [among children], such as aggression, rule breaking, delinquency, and illegal drug use. These antisocial behaviors affect high school completion independent of a child’s verbal and math scores. Thus it appears that a father’s absence lowers children’s educational attainment…by disrupting their social and emotional adjustment and reducing their ability or willingness to exercise self-control.

The effects of growing up without both parents when it comes to aggression, rule breaking, and delinquency are also larger for boys than for girls. Marianne Bertrand and Jessica Pan found in 2011 that the behavior of boys is far more dependent upon good parenting practices — spending time with a child, emotional closeness, and avoiding harsh discipline — than that of girls. Such parenting habits are far more common in two-parent families, which helps to explain why boys with absent fathers are more likely to be suspended and have other behavioral problems than boys who have both parents at home.

The evidence also indicates that the outcomes are most negative when a man other than the biological father is present. Cassandra Dorius and Karen Guzzo found that “adolescents with a half-sibling with a different father are about 65 percent more likely to have used marijuana, uppers, inhalants, cocaine, crack, hallucinogens, sedatives, or other drugs by the time of their 15th birthday than those who have only full siblings.” Cynthia Harper and Sara McLanahan reported in 2004 that, among fatherless boys, those who lived with stepfathers were at an even greater risk of incarceration than those who lived with a single mother.

I think in today’s society, there seems to be a lot of fear and trembling to speak about moral standards. And it seems to be especially true that men are not allowed to tell women about their moral obligations. I know that at least when I speak to young women, they are often very rebellious. The attitude I encounter most often is that they feel that they should be able to trust their feelings and act in the way that their feelings dictate. Any destructiveness that results – which I warned them about – is dismissed as “unexpected”.

I can clearly remember the first time this happened to me, when I was in high school. I was friends with a girl named Tara who would come over and speak to me before morning announcements. She would tell me about her stock car driving boyfriend. One day, she told me that she was moving in with him. I warned her against it, and listed off a bunch of statistics about how this would cause problems. She stopped coming to talk to me, and so did her best female friend. Well, a few years later I ran into her again at one of our local universities where I was an undergraduate. She filled me in on what had happened. He had cheated on her with her best friend in their house. He got her pregnant. She had an abortion. She knew better now, but back in high school I was easily dismissed, and all of her friends sided with her.

Whenever I try to produce evidence to say that something is likely to cause harm, the response is usually “well I know a person who broke the rules and nothing happened”. I produce statistics about some likely consequence of following your heart, and it’s dismissed because some Hollywood celebrity managed to escape the probabilities. “Don’t judge me!” they say. Happiness comes first, and the best way to decide how to be happy in the long-term is apparently to do what makes a person feel happy right now. But statistics are there to tell a story of how the world normally works – dismissing it all with individual cases is bad logic. There are consequences to following your feelings and dismissing moral obligations.