Category Archives: Polemics

Polemics

Alexander Vilenkin: “All the evidence we have says that the universe had a beginning”

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I’ve decided to explain why physicists believe that there was a creation event in this post. That is to say, I’ve decided to let famous cosmologist Alexander Vilenkin do it.

From Uncommon Descent.

Excerpt:

Did the cosmos have a beginning? The Big Bang theory seems to suggest it did, but in recent decades, cosmologists have concocted elaborate theories – for example, an eternally inflating universe or a cyclic universe – which claim to avoid the need for a beginning of the cosmos. Now it appears that the universe really had a beginning after all, even if it wasn’t necessarily the Big Bang.

At a meeting of scientists – titled “State of the Universe” – convened last week at Cambridge University to honor Stephen Hawking’s 70th birthday, cosmologist Alexander Vilenkin of Tufts University in Boston presented evidence that the universe is not eternal after all, leaving scientists at a loss to explain how the cosmos got started without a supernatural creator. The meeting was reported in New Scientist magazine (Why physicists can’t avoid a creation event, 11 January 2012).

[…]In his presentation, Professor Vilenkin discussed three theories which claim to avoid the need for a beginning of the cosmos.

The three theories are chaotic inflationary model, the oscillating model and quantum gravity model. Regular readers will know that those have all been addressed in William Lane Craig’s peer-reviewed paper that evaluates alternatives to the standard Big Bang cosmology.

But let’s see what Vilenkin said.

More:

One popular theory is eternal inflation. Most readers will be familiar with the theory of inflation, which says that the universe increased in volume by a factor of at least 10^78 in its very early stages (from 10^−36 seconds after the Big Bang to sometime between 10^−33 and 10^−32 seconds), before settling into the slower rate of expansion that we see today. The theory of eternal inflation goes further, and holds that the universe is constantly giving birth to smaller “bubble” universes within an ever-expanding multiverse. Each bubble universe undergoes its own initial period of inflation. In some versions of the theory, the bubbles go both backwards and forwards in time, allowing the possibility of an infinite past. Trouble is, the value of one particular cosmic parameter rules out that possibility:

But in 2003, a team including Vilenkin and Guth considered what eternal inflation would mean for the Hubble constant, which describes mathematically the expansion of the universe. They found that the equations didn’t work (Physical Review Letters, DOI: 10.1103/physrevlett.90.151301). “You can’t construct a space-time with this property,” says Vilenkin. It turns out that the constant has a lower limit that prevents inflation in both time directions. “It can’t possibly be eternal in the past,” says Vilenkin. “There must be some kind of boundary.”

A second option explored by Vilenkin was that of a cyclic universe, where the universe goes through an infinite series of big bangs and crunches, with no specific beginning. It was even claimed that a cyclic universe could explain the low observed value of the cosmological constant. But as Vilenkin found, there’s a problem if you look at the disorder in the universe:

Disorder increases with time. So following each cycle, the universe must get more and more disordered. But if there has already been an infinite number of cycles, the universe we inhabit now should be in a state of maximum disorder. Such a universe would be uniformly lukewarm and featureless, and definitely lacking such complicated beings as stars, planets and physicists – nothing like the one we see around us.

One way around that is to propose that the universe just gets bigger with every cycle. Then the amount of disorder per volume doesn’t increase, so needn’t reach the maximum. But Vilenkin found that this scenario falls prey to the same mathematical argument as eternal inflation: if your universe keeps getting bigger, it must have started somewhere.

However, Vilenkin’s options were not exhausted yet. There was another possibility: that the universe had sprung from an eternal cosmic egg:

Vilenkin’s final strike is an attack on a third, lesser-known proposal that the cosmos existed eternally in a static state called the cosmic egg. This finally “cracked” to create the big bang, leading to the expanding universe we see today. Late last year Vilenkin and graduate student Audrey Mithani showed that the egg could not have existed forever after all, as quantum instabilities would force it to collapse after a finite amount of time (arxiv.org/abs/1110.4096). If it cracked instead, leading to the big bang, then this must have happened before it collapsed – and therefore also after a finite amount of time.

“This is also not a good candidate for a beginningless universe,” Vilenkin concludes.

So at the end of the day, what is Vilenkin’s verdict?

“All the evidence we have says that the universe had a beginning.”

This is consistent with the Borde-Guth-Vilenkin Theorem, which I blogged about before, and which William Lane Craig leveraged to his advantage in his debate with Peter Millican.

The Borde-Guth-Vilenkin (BGV) proof shows that every universe that expands must have a space-time boundary in the past. That means that no expanding universe, no matter what the model, can be eternal into the past. No one denies the expansion of space in our universe, and so we are left with a cosmic beginning. Even speculative alternative cosmologies do not escape the need for a beginning.

Conclusion

If the universe came into being out of nothing, which seems to be the case from science, then the universe has a cause. Things do not pop into being, uncaused, out of nothing. The cause of the universe must be transcendent and supernatural. It must be uncaused, because there cannot be an infinite regress of causes. It must be eternal, because it created time. It must be non-physical, because it created space. There are only two possibilities for such a cause. It could be an abstract object or an agent. Abstract objects cannot cause effects. Therefore, the cause is an agent.

Now, let’s have a discussion about this science in our churches, and see if we can’t train Christians to engage with non-Christians about the evidence so that everyone accepts what science tells us about the origin of the universe.

Polemics

Kenosis and the doctrine of the Incarnation in Philippians 2:5-11

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The Son of God became flesh and dwelt among us
The Son of God became flesh and dwelt among us

It’s Christmas, so it’s time to see what the Bible says about who Jesus was and what it tells us about the character of God.

Here are the relevant verses in Phil 2:5-11 [NASB]:

5 Have this attitude in yourselves which was also in Christ Jesus,

6 who, although He existed in the form of God, did not regard equality with God a thing to be grasped,

7 but emptied Himself, taking the form of a bond-servant, and being made in the likeness of men.

8 Being found in appearance as a man, He humbled Himself by becoming obedient to the point of death, even death on a cross.

9 For this reason also, God highly exalted Him, and bestowed on Him the name which is above every name,

10 so that at the name of Jesus every knee will bow, of those who are in heaven and on earth and under the earth,

11 and that every tongue will confess that Jesus Christ is Lord, to the glory of God the Father.

Here’s respected New Testament scholar Ben Witherington to help us make sense of it:

Incarnation refers to the choices and acts of a pre-existent divine being, namely the Son of God, that the Son took in order to become a human being. He took on flesh, and became fully, truly human without ceasing to be fully, truly divine. Divinity is not something Jesus acquired later in life, or even after his death and resurrection. According to the theology of Incarnation he had always been the divine Son of God, even before he became Jesus, a human being. Strictly speaking the name Jesus only applies to a human being. It is the name the Son of God acquired once he became a human being in the womb of Mary, a name which he maintains to this day as he continues to be a human being.

[…]When I try and explain the incarnation to my students I deliberately choose to use the phrase divine condescension. What do I mean by this? Put another way, if there is going to be a corporate merger between a divine being and a human nature, then the divine side of the equation must necessarily limit itself, take on certain limitations, in order to be truly and fully human. The next question is…. what does it mean to be fully human? It means to have limitations of time and space and knowledge and power, and of course being mortal. Jesus exhibited all these traits. He was even tempted like us in every respect, but he avoided sin. What we should deduce from this is sinning is not a necessary part of being truly human. Yes, it is a trait of all fallen humans, but no, it is not how God made us in the first place. It is not necessary to sin in order to be truly or fully human.

[…]While the hymn is clear that the Son was ‘in very nature God’ at the same time he chose before he became human not to take advantage of his divine prerogatives. What were those? I call them the omnis– omniscience, omnipotence, omnipresence.

[…]And here I think is what Paul is driving at when he says ‘have this mind in yourselves that was also in Christ Jesus’. It says that he ‘humbled himself’. Now contrary to what the world may think humility has nothing to do with feelings of low self-esteem. It has nothing to do with feelings of low self-worth. If Jesus is the model of true humility, it can’t have anything to do with those things, because Jesus surely was the one person who walked this earth who did not have such feelings, did not have an identity crisis, and so on. Humility is the posture of a strong person who steps down to serve others, as Jesus did.

This IVP commentary on Bible Gateway talks more about what this “divine condescension” means to us, using that passage from Philippians:

Christ’s selflessness for the sake of others expressed itself in his emptying himself by taking the “form” of a slave. Historically, far too much has been made of the verb “emptied himself,” as though in becoming incarnate he literally “emptied himself” of something. However, just asharpagmos requires no object for Christ to “seize” but rather points to what is the opposite of God’s character, so Christ did not empty himself of anything; he simply “emptied himself,” poured himself out, as it were. In keeping with Paul’s ordinary usage, this is metaphor, pure and simple. What modifies it is expressed in the phrase that follows; he “poured himself out by taking on the ‘form’ of a slave.”

Elsewhere this verb regularly means to become powerless or to be emptied of significance (hence the NIV’s made himself nothing; cf. KJV, “made himself of no reputation”). Here it stands in direct antithesis to the “empty glory” of verse 3 and functions in the same way as the metaphorical “he became poor” in 2 Corinthians 8:9. Thus, as in the “not” side of this clause (v. 6b), we are still dealing with the character of God as revealed in the mindset and resulting activity of the Son of God. The concern is with divine selflessness: God is not an acquisitive being, grasping and seizing, but self-giving for the sake of others.

I think it’s important to be clear that Jesus didn’t give up anything of his divine attributes by becoming a man. Rather, he added a human nature to his divine nature. The humility is because he came to serve  others.

You can see a nice quick video of this doctrine being defended by famous philosophical theologian William Lane Craig:

I think that it is important for us to emphasize the doctrine of the Incarnation at Christmas, in order to correct the grasping and seizing that is so widespread. The really interesting thing about Christmas is the Incarnation, and what it tells us about God and us. It tells us that we have value, because Jesus loved us. But it also says that following Jesus means being humble and being a servant to others. It means pouring yourself out to others in order to serve them. And these obligations are not metaphorical – they are rooted in the historical facts. This is the way the world is as a matter of fact, although certainly we have freedom to rebel against it.

For those looking for defenses to the doctrine of the Incarnation, you can find a chapter on it by Paul Copan in the book “Contending With Christianity’s Critics“. That’s for intermediate readers. For advanced readers you can look for a chapter in “The Cambridge Companion to Christian Philosophical Theology“, edited by Charles Taliaferro and Chad Meister, and published by Cambridge University Press.

Polemics

The Economist: marriage is still the best place for children

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Marriage and family
Marriage and family

I stopped reading The Economist when they endorsed the socialist failure Barack Obama, who doubled the national debt to $20 trillion in only 8 years. However, even a stopped clock is right twice a day. And here is one of those times.

Excerpt:

However, there is one big reason to worry about the quality and longevity of people’s intimate bonds. It is that relationships often produce children, and children are profoundly affected by how their parents get on.

You could make enough confetti for a summer of weddings with all the academic papers that show how much children gain from being brought up in stable, loving families, and how much they suffer when those families break down. Culture and customs make little difference. In Japan, four-fifths of single-parent households emerge when couples divorce—a much higher share than in the West, where people usually slip into single parenthood without marrying. Japanese children living with only one parent nonetheless perform significantly worse in school tests, just as children from single-parent families do in Europe and America. In poorer countries, family breakdown can kill. According to one recent estimate, the chance that an African child will die before turning five is about 25-30 per 1,000 for those born into stable families, but 35-40 per 1,000 for the children of single, divorced or widowed parents.

Marriage is not always good for children. They do not benefit when a parent marries somebody who is not their mother or father, and seem to suffer if the parent they live with cycles through several relationships. What they seem to need most is for their biological parents to stick together. And one strong claim that can be made for marriage is that it appears to glue parents together more tightly than any other arrangement.

This part is key, especially for those millennials who think that cohabitating before marrying makes the marriage more secure:

Analysis of one large American data set by Kathryn Edin and Laura Tach, two sociologists, shows that 27% of marriages broke down within nine years of a child being born. By contrast, among couples who were merely cohabiting when a child appeared, 53% separated within nine years—and most of the remaining 47% were married by that point. Among couples who were dating but not living together when the child was born, 81% had split up.

Again, this pattern runs across national and cultural borders. Cohabiting couples behave a bit more like married couples in countries where giving birth outside marriage is very common, such as Estonia and Norway. But they seldom attain the same level of stickiness as married couples, even after controlling for the mother’s level of education.

Cohabitation doesn’t work, because it’s basically saying that I’m going to try the other person and see if I like the other person, and that sex is required to know if I like the other person. It doesn’t really matter that you know the other person really well, because you can always get out of cohabitation just by leaving. Marriage says that I’m going to commit to the other person for life, through thick and thin. Here, both people tend to do a more thorough job of selecting their partner, perhaps even consulting fathers for advice. Why? Because getting out of a marriage is a lot harder to do, and more expensive.

In the past, I’ve blogged about some factors that can make your marriage pretty much divorce proof: things like chastity, not spending too much on the wedding, age of the man and woman at marriage, education levels of each spouse, number of people attending the wedding ceremony, isolation from other divorced people, church attendance, and so on. The truth is that you can engineer a marriage that’s practically divorce proof. But if you insist on spontaneity and following your heart, then you aren’t going to care what studies say works best.