Polemics

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

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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

 

Commentary

Are pious pastors preparing young Christians to defend their moral values?

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Younger evangelicals more liberal than older evangelicals... is it just ignorance?
Voting for Obama means abortion, gay marriage and end of religious liberty

You might expect Christians to advocate for values like chastity, life-long natural marriage, protection for unborn and born children, right to work, low taxes, limited government, free speech, religious liberty, and so on. But today, many young evangelicals are embracing  higher taxes, more spending, socialism, retreat from just wars against evil forces, abortion, gay marriage, global warming alarmism, etc.

Why is this happening?

Christianity should make me feel happy and be liked by others?

Here is the first problem. When you advocate for moral causes like protecting the unborn, or school choice, or freeing the slaves, a bunch of people are not going to like you. Christians in the time of Jesus knew that being bold about their Christian convictions would make a lot of people think bad things about them – they expected it. But young evangelicals have gotten the idea that being a Christian should not involve any sort of unhappiness and unpopularity. They’ve been told that God has a wonderful plan for their lives, and that plan involves happiness, fulfillment, travel and adventure. They wouldn’t have learned this from the Bible, because the Bible emphasizes suffering and unpopularity as part of the normal Christian life. Christianity has always been opposed to abortion and homosexuality, but these things are not fun and popular today. Since these young Christians believe in a God of love – a cosmic butler who leads them to happiness through their feelings – of course they are going to find defending traditional Christian values too difficult.

Christianity should be about my private experience of belief?

What young evangelicals learn in many churches is that religion is something that is centered on the Bible and the church building – it is not something that flows into real life. This is actually the goal of the most pious, orthodox pastors, with the exception of people like Pastor Wayne Grudem or Pastor Matt Rawlings who can integrate the Bible with real-world how-to knowledge. Pastors want to protect God from being “judged” by evidence, because they regard evidence as dirty, and unworthy of being allowed to confirm or deny blind faith / tradition. Pastors instead teach young people that you can’t find out anything about God from things like the Big Bang, the DNA, the fossil record, or even from the peer-reviewed research on abortion, divorce, or gay marriage. And they don’t respond to arguments and evidence from non-Christian skeptics, either. Their goal is to insulate belief from evidence. If the Bible says “do this” then they don’t even want to study the way the world works in order to know the best way to do what the Bible asks.

For example, when it comes to politics and social activism, young evangelicals learn in church about helping the poor. But pastors never tell them anything about economics, which shows that the free enterprise system is the best at helping the poor. (Just compare the USA to North Korea or Venezuela or Argentina). Instead, young evangelicals blissfully accept the left’s narrative that free markets and charity don’t work, and that  government must step in to redistribute wealth. Most pastors they never pick up an economic textbook to see which economic system really helps the poor. And that ignorance is passed on to gullible and sentimental young people, who jump on any slick politician who promises to help the poor through redistribution rather than economic growth and innovation. What you learn about in church is that religion is private and has no connection to reality whatsoever., so there is no point in learning anything – science, economics, philosophy. Pious pastors put Christianity outside the realm of truth.

The (young) people perish for lack of knowledge

What follows from having a view that Christianity only lives in the Bible and church, and not out there in the real world of telescopes and microscopes? Well, most young evangelicals will interpret what their pastor is telling them as “our flavor of ice cream” or “our cultural custom”. They don’t link Christianity to the real world, they don’t think that it’s true for everyone. They think that “people in church” just accept what the Bible says on faith, and that’s all. So what happens when topics like abortion, marrige, economics, war, etc. come up in their daily conversations? Well, all the pastors have equipped them with is “the Bible says”, and that’s not enough to be persuasive with non-Christians. They have no way of speaking about their beliefs and values with anyone who doesn’t already believe in the Bible. And that’s why they go left… it’s much easier to just go along with their secular left peers, professors and cultural heroes. And that’s exactly what they do. Without facts and evidence – which they never taught  or even mentioned in church – how can they be expected to stand up for Biblical Christianity? They can’t.

If young Christians never learn how to present a case for traditional values and beliefs apart from the Bible for concepts like pro-life or natural marriage or religious liberty, then they will cave to the secular left culture. And this is exactly what the pious pastors have facilitated by “rescuing” the God and the Bible and the historical Jesus from evidence and knowledge. Young people lack courage to take Biblical positions, because they first lack knowledge. They don’t know how to make the case using evidence that their opponents will accept – mainstream evidence from publicly accessible sources. And that’s how the pastors want it – piety, not evidence.

Christianity is a knowledge tradition

No young evangelical is going to lift a finger to take bold moral stands if they think their worldview is just one option among many – like the flavors of ice cream in the frozen section of the grocery store. They have to know that what they are saying is true – then they will be bold. Boldness is easy when you are aware of facts and evidence for your view. Not just what the pastors and choirs accept, but facts and evidence that are widely accepted.

Positive arguments for Christian theism

News

White House cannot name a mass shooting that would have been prevented by gun control

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Guns are for self-defense against criminals
Guns are for self-defense against criminals

This is from the Washington Free Beacon.

Excerpt:

White House spokesman Josh Earnest struggled to answer direct questions Thursday about whether any of President Obama’s proposed gun control measure would have prevented the recent mass shootings seen in the U.S.

Reporter Byron Tau brought up Sen. Marco Rubio’s (R., Fla.) remark that no recent mass shootings would have been prevented by gun legislation, a statement rated “True” by the Washington Post fact-checker.

[…]“Can the White House point to a recent mass shooting that would have been stopped by a expanded assault weapons ban or stricter background checks?” Tau asked. “The evidence seems to be that in all these recent mass shootings, these folks either passed background checks or were very determined to circumvent the strict gun laws that are already on the books. Can you point to any that would have been prevented or stopped by the kind of proposals the White House is championing?”

“Again, Byron, I think the same thing applies here, which is it’s not our view that we should wait until somebody who’s on the no-fly list walks into a gun store, legally purchases a gun and kills a bunch of innocent Americans before we pass a law preventing it,” Earnest said. “That’s a common-sense view. The president believes that’s in our national security, and that’s why we believe quite strongly that Congress should take action to address it and close the no-fly, no-buy loophole.”

Tau asked whether any of the mass shooters were on the no-fly list.

“Not that I’m aware of,” Earnest said.

Here’s the the clip:

The Democrats want to prevent people from defending themselves against criminals and terrorists, but they don’t have a plan to do anything to stop the criminals or the terrorists. Their focus is on disarming the law-abiding people, not detecting and punishing the law-breaking people.

The peer-reviewed research

Whenever I get into discussions about gun control, I always mention two academic books by John R. Lott and Joyce Lee Malcolm.

Here is a paper by Dr. Malcolm that summarizes one of the key points of her book.

Excerpt:

Tracing the history of gun control in the United Kingdom since the late 19th century, this article details how the government has arrogated to itself a monopoly on the right to use force. The consequence has been a tremendous increase in violent crime, and harsh punishment for crime victims who dare to fight back. The article is based on the author’s most recent book, Guns and Violence: The English Experience (Harvard University Press, 2002). Joyce Malcom is professor of history at Bentley College, in Waltham, Massachusetts. She is also author of To Keep and Bear Arms: The Origins of an AngloAmerican Right (Harvard University Press, 1994).

Upon the passage of The Firearms Act (No. 2) in 1997, British Deputy Home Secretary Alun Michael boasted: “Britain now has some of the toughest gun laws in the world.” The Act was second handgun control measure passed that year, imposed a near-complete ban on private ownership of handguns, capping nearly eighty years of increasing firearms restrictions. Driven by an intense public campaign in the wake of the shooting of schoolchildren in Dunblane, Scotland, Parliament had been so zealous to outlaw all privately owned handguns that it rejected proposals to exempt Britain’s Olympic target-shooting team and handicapped target-shooters from the ban.

And the result of the 1997 gun ban:

The result of the ban has been costly. Thousands of weapons were confiscated at great financial cost to the public. Hundreds of thousands of police hours were devoted to the task. But in the six years since the 1997 handgun ban, crimes with the very weapons banned have more than doubled, and firearm crime has increased markedly. In 2002, for the fourth consecutive year, gun crime in England and Wales rose—by 35 percent for all firearms, and by a whopping 46 percent for the banned handguns. Nearly 10,000 firearms offences were committed.

[…]According to Scotland Yard, in the four years from 1991 to 1995 crimes against the person in England‟s inner cities increased by 91 percent. In the four years from 1997 to 2001 the rate of violent crime more than doubled. The UK murder rate for 2002 was the highest for a century.

I think that peer-reviewed studies – from Harvard University, no less – should be useful to those of us who believe in the right of self-defense for law-abiding people. The book by economist John Lott, linked above,compares the crime rates of all U.S. states that have enacted concealed carry laws, and concludes that violent crime rates dropped after law-abiding citizens were allowed to carry legally-owned firearms. That’s the mirror image of Dr. Malcolm’s Harvard study, but both studies affirm the same conclusion – more legal firearm ownership means less crime.