Tag Archives: Big Bang

Events

William Lane Craig debates Lawrence Krauss: Does God Exist?

3 Comments

Audio of the William Lane Craig vs. Lawrence Krauss debate at North Carolina State University has now been posted at Apologetics 315.

And I also posted some background information on Craig’s arguments.

William Lane Craig’s case

William Lane Craig made 5 arguments for the existence of God:

  • the contingency argument
  • theargument from the origin of the universe (kalam)
  • the argument from cosmic fine-tuning
  • the moral argument
  • the argument from the miracle of the resurrection

These arguments went unrefuted during the debate.

Lawrence Krauss’s case

Lawrence Krauss made the following arguments in his first speech:

  • Dr. Craig is a professional debater
  • Dr. Craig is not a scientist
  • Dr. Craig is a philosopher
  • Disproving God’s is a waste of my valuable time
  • Dr. Craig has the burden of proof to show evidence
  • My job is not to present any evidence
  • I think that “extraordinary claims require extraordinary evidence” is a nice slogan, but I have no evidence for it
  • I don’t like that God doesn’t appear on Youtube, therefore he doesn’t exist
  • I don’t like that God didn’t appear to humans until recently, therefore he doesn’t exist
  • I don’t like that the stars didn’t come together to spell “I am here”, therefore God doesn’t exist
  • Dr. Craig has to supply extraordinary evidence, because my favorite slogan says he has to
  • Dr. Craig talks about logic, but the universe is not logical
  • Dr. Craig doesn’t have any arguments, just things he doesn’t like
  • Dr. Craig doesn’t like infinity, and that’s why he believes in the Big Bang cosmology
  • Dr. Craig doesn’t like chance, and that’s why he believes in cosmic fine-tuning
  • Dr. Craig doesn’t like rape, and that’s why he believes in the ontological foundations of morality
  • If people believe in logic, then they can’t do science
  • The things that science discovers contradict the laws of logic
  • For example, Dr. Craig doesn’t like infinity, so he believes in the experimental measurements of the cosmic microwave background radiation
  • For example, Dr. Craig doesn’t like chance, so he believes in the fine-tuning of the gravitational constant for the formation of stable stars
  • Quantum mechanics shows that the universe is stranger than you think, therefore all of Craig’s arguments are false
  • My t-shirt says 2 + 2 = 5, therefore all of Craig’s arguments are false
  • Atheism may look ridiculous, but it’s true, and if you don’t like it, too bad – because the universe is very strange
  • Accidents happen all the time, so that explains the cosmic fine-tuning
  • We all have to convince ourselves of 10 impossible things before breakfast, and atheism is impossible, so you need to convince yourself of it
  • I don’t know about the Big Bang, so Dr. Craig cannot use the Big Bang to to prove the universe began to exist
  • I don’t know about the cosmic fine-tuning, so Dr. Craig cannot use the fine-tuning of cosmological constants to prove the fine-tuning
  • I don’t know anything about science, so Dr. Craig cannot use science in his arguments
  • Dr. Craig says that the universe is contingent because it began to exist 13.7 billion years ago based on the state-of-the-art scientific evidence for the Big Bang creation out of nothing from 1) red-shift of light from distant galaxies, 2) cosmic microwave background radiation, 3) helium-hydrogen abundances, 4) experimental confirmation of general relativity, 5) the second law of thermodynamics, 6) radioactive element abundances, etc., but how does he know that? I don’t know that
  • It’s fine not to know the answer to scientific questions like whether the universe began to exist, it’s more exciting
  • Thinking that the universe began to exist based on 6 pieces of scientific evidence is the “God-of-the-Gaps” fallacy, it’s intellectual laziness
  • But all kidding aside, the universe actually did begin to exist 13.72 billion years ago, exactly like Craig says in his argument
  • I could argue that God created the universe 4.5 seconds ago with all of us sitting believing that we heard Dr. Craig, and how could you prove me wrong? It’s not falsifiable
  • Universes can spontaneously appear out of nothing, and in fact they have to appear out of nothing
  • Nothing is unstable, and space and time can come into existence out of nothing, so that’s not a problem
  • Our universe could have appeared out of a multiverse, an unobservable, untestable multiverse that I have no way of observing or testing
  • The universe is not fine-tuned for life, and no scientist says so, especially not Martin Rees, the atheist Astronomer Royal, and every other scientist
  • What if God decided that rape was OK, would it be OK? God can change his moral nature arbitrarily, can’t he?

Here are the arguments in Krauss’ second speech:

  • We don’t understand the beginning of the universe
  • We don’t understand whether the universe had a cause
  • Steven Weinberg says that science makes it possible to be an atheist, so therefore the universe didn’t begin and didn’t have a cause
  • It’s just intellectual laziness to say that the universe came into being 13.7 billion years ago, and that things that come into being of nothing have a cause
  • Dr. Craig is an expert on nothing, ha ha ha!
  • There are multiple versions of nothing, there’s nothing, and then there is something, which is also nothing if I want it to be
  • There was no space, there was no time, and then the space create the empty space
  • I’m going to give Dr. Craig a break
  • At least in the nothing there were laws like F=ma, and those laws created the empty space, because descriptions of matter that does not even exist yet can create space out of nothing
  • Alan Guth and Alexander Vilenkin are good friends of mine and I talk to them all the time, unlike Dr. Craig
  • Alan Guth and Alexander Vilenkin don’t mention God in their scientific papers, therefore the universe didn’t begin and didn’t have a cause
  • Maybe there is a multiverse that cannot be observed or tested? And my unscientific speculations are a refutation of Craig’s scientific evidence for the fine-tuning
  • Dr. Craig just doesn’t like my speculations about the unobservable, untestable multiverse, and that’s why he believes in the Big Bang cosmology
  • And if you let me speculate about an unobservable, untestable multiverse, then maybe the inanimate invisible universes reproduce and compete for food and mutate like animals and then there is natural selection so that the finely-tuned universes survive and now we’re in one!
  • My cool animation of blue goo mutating proves that the multiverse is real! Empty space is not empty!
  • Darwinism, which is a theory about the origin of species, explains the cosmic fine-tuning that occurred at the moment of creation
  • The unobservable, untestable multiverse universes all have different laws, I believe
  • We don’t know what the right answer is, but we are willing to look at any possibility, as long as the possibilities we look at are not supernatural possibilities
  • The discovery of the origin of the universe could be an accident, I don’t know if the universe began to exist or not, maybe all the six scientific evidences are wrong because if I don’t like the evidence we have, so I’ll just wait for new evidence to overturn the evidence we have which I don’t like
  • Maybe there are other forms of life that are unobservable and untestable that are compatible with a universe that has no stable stars, no planets, no elements heavier than hydrogen, no hydrogen, no carbon, etc.

Here are the arguments in Krauss’ third speech:

  • Dr. Craig is stupid
  • Why should we even care about Dr. Craig’s arguments and evidence, we can just count the number of scientists who are atheists and decide whether God exists that way – I decided everything based on what my teachers told me to believe
  • I actually know general relativity, not like Dr. Craig who co-wrote a book on general relativity published by Oxford University Press
  • What quantum mechanics shows is that virtual particles come into being in a quantum vacuum, and then go out of existence almost immediately – and that is exactly like how a 13.7 billion year old universe came into being in a quantum vacuum, and we’re going to disappear very soon
  • Space and the laws of physics can be created, possibly, if you accept my speculations about an unobservable, untestable multiverse
  • I don’t like the God of the Old Testament, therefore he doesn’t exist
  • Groups of people can decide what they think is good and evil, like the Nazis and slave-owners did, and then that becomes good for them in that time and place, and that’s what I mean by morality
  • Here’s something I studied that wasn’t fine-tuned, therefore there is no fine-tuning of the universe
  • Not knowing things is really exciting! Dr. Craig is not really exciting because he knows things – phooey!

Here are the arguments in Krauss’ fourth speech:

  • If you will just grant me an observable, untestable multiverse, then there must be some universe where intelligent life exists
  • Infinite numbers of things exist everywhere in nature, you can see lots of infinite collections of things, like jelly beans and bumblebees and invisible pink unicorns
  • I don’t like the fine-tuning, but if my speculations about the multiverse are proven true, then I won’t have to learn to live with the fine-tuning
  • Inflation, the rapid expansion of the universe which occurs at some time after the the origin of the universe (t = 0), explains the absolute origin of time, space, matter and energy out of nothing that occurred at t = 0
  • Physical processes that develop subsequent to the creation of the universe at t > 0 can explain the fine-tuning of quantities that are set at t = 0
  • Morality is just a bunch of arbitrary conventions decided by groups of people in different times and places by an accidental process of biological and social evolution, but that practice over there by those people is objectively wrong!
  • 1 Cor 15:3-7, which most scholars, even atheists like James Crossley, admit is dated to within 3 years of the death of Jesus, is actually dated to 50 years after the death of Jesus
  • The historical case for the resurrection made by people like N.T. Wright in their multi-volume academic works is on par with the story of Mohammed ascending to Heaven on a horse

If you liked this, please check out my snarky summary of Christopher Hitchens’ speeches in the Craig-Hitchens debate.

News

Did the universe have a beginning or has it always existed?

Leave a comment

Here’s a short article from the Massachusetts Institute of Technology’s Physics arXiv blog. (H/T Wes)

Excerpt:

The Big Bang has become part of popular culture since the phrase was coined by the maverick physicist Fred Hoyle in the 1940s. That’s hardly surprising for an event that represents the ultimate birth of everything.

However, Hoyle much preferred a different model of the cosmos: a steady state universe with no beginning or end, that stretches infinitely into the past and the future. That idea never really took off.

In recent years, however, cosmologists have begun to study a number of new ideas that have similar properties. Curiously, these ideas are not necessarily at odds with the notion of a Big Bang.

For instance, one idea is that the universe is cyclical with big bangs followed by big crunches followed by big bangs in an infinite cycle.

Another is the notion of eternal inflation in which different parts of the universe expand and contract at different rates. These regions can be thought of as different universes in a giant multiverse.

So although we seem to live in an inflating cosmos,  other universes may be very different. And while our universe may look as if it has a beginning, the multiverse need not have a beginning.

Then there is the idea of an emergent universe which exists as a kind of seed for eternity and then suddenly expands.

So these modern cosmologies suggest that the observational evidence of an expanding universe is consistent with a cosmos with no beginning or end. That may be set to change.

Today, Audrey Mithani and Alexander Vilenkin at Tufts University in Massachusetts say that these models are mathematically incompatible with an eternal past. Indeed, their analysis suggests that these three models of the universe must have had a beginning too.

Their argument focuses on the mathematical properties of eternity–a universe with no beginning and no end. Such a universe must contain trajectories that stretch infinitely into the past.

However, Mithani and Vilenkin point to a proof dating from 2003 that these kind of past trajectories cannot be infinite if they are part of a universe that expands in a specific way.

They go on to show that cyclical universes and universes of eternal inflation both expand in this way. So they cannot be eternal in the past and must therefore have had a beginning. “Although inflation may be eternal in the future, it cannot be extended indefinitely to the past,” they say.

They treat the emergent model of the universe differently, showing that although it may seem stable from a classical point of view, it is unstable from a quantum mechanical point of view. “A simple emergent universe model…cannot escape quantum collapse,” they say.

The conclusion is inescapable. “None of these scenarios can actually be past-eternal,” say Mithani and Vilenkin.

Since the observational evidence is that our universe is expanding, then it must also have been born in the past. A profound conclusion (albeit the same one that lead to the idea of the big bang in the first place).

They link to this peer-reviewed paper featuring Alexander Vilenkin at the end of the article, which was published in the Proceedings of the 10th Incternational Conference on Gravitation, Astrophysics and Cosmology, Quy-Nhon, Vietnam, December 2011.

The paper concludes:

Did the universe have a beginning?

At this point, it seems that the answer to this question is probably yes. Here we have addressed three scenarios which seemed to offer a way to avoid a beginning, and have found that none of them can actually be eternal in the past. Both eternal inflation and cyclic universe scenarios have Hav > 0, which means that they must be past-geodesically incomplete. We have also examined a simple emergent universe model, and concluded that it cannot escape quantum collapse. Even considering more general emergent universe models, there do not seem to be any matter sources that admit solutions that are immune to collapse.

So where do we stand? There is no eternal universe. There was a beginning to space and time. The entire physical universe came into being out of nothing at some point in the past.

Here’s my previous post on the BVG theorem that explains a bit more about how this data applies to the question of God’s existence.

Podcasts

Brian Auten interviews philosopher Robin Collins on the fine-tuning argument

Leave a comment

The latest interview from Apologetics 315 is up, and it’s a must-listen.

Details:

Today’s interview is with Robin Collins, professor of philosophy at Messiah College. His training is in physics and in philosophy and he is a leading advocate for using the fine-tuning of the universe as a design argument for theism. He talks about his background and training, the fine-tuning argument, the different types of fine-tuning with examples and illustrations (laws, constants and initial conditions), two different ways of presenting the fine-tuning argument, answering common objections to the argument, the uniqueness of life, variations of the multiverse hypothesis, the failure of multiverse theory to explain away fine-tuning, objections to Victor Stenger, upcoming books, simplifying the fine-tuning argument for practical use, common mistakes when presenting the argument, the most common objection (who designed God?), and more.

Get the MP3 file from Apologetics 315.

Dr. Collins is extremely cautious and circumspect in his assessment of the fine-tuning argument. He takes the objections to the argument, like the multiverse, seriously and that comes across in the interview. He is familiar with criticisms of the argument and he has engaged with skeptics like Victor Stenger in his published work. I highly recommend it. It is a little more suited to intermediate-level Christians, but not so advanced that it’s impossible for non-math beginners to follow the broad thrust of what’s being said.

About Robin Collins:

Robin Collins (PhD, University of Notre Dame, 1993), is professor of philosophy at Messiah College, Grantham, PA specializing in the area of science and religion. He has written over twenty-five articles and book chapters on a wide range of topics, such as the fine-tuning of the cosmos as evidence for the existence of God, evolution and original sin, the Doctrine of Atonement, Asian religions and Christianity, and Bohm’s theory of quantum mechanics. Some of his most recent articles/book chapters are “Philosophy of Science and Religion” in The Oxford Handbook of Science and Religion, “Divine Action and Evolution” in The Oxford Handbook of Philosophical Theology (2009) “The Multiverse Hypothesis: A Theistic Perspective,” in Universe or Multiverse? (Cambridge University Press), and “God and the Laws of Nature,” in Theism or Naturalism: New Philosophical Perspectives (Oxford University Press, forthcoming). He recently received a grant from the John Templeton Foundation to finish a book that presents the case for design based on physics and cosmology, tentatively entitled The Well-Tempered Universe: God, Cosmic Fine-tuning, and the Laws of Nature.

You can read Robin Collins’ testimony here.

The fine-tuning argument

Here’s a short article where Collins gives TWO examples of the fine-tuning. He is very modest in his argument, merely asserting that the fine-tuning is more compatible with theism than it is with atheism.

Excerpt:

Science is commonly thought to have undercut belief in God. As Nobel Prize winning physicist Steven Weinberg famously remarked, “the more we find out about the universe, the more meaningless it all seems.” Yet, the discoveries of modern physics and cosmology in the last 50 years have shown that the structure of the universe is set in an extraordinarily precise way for the existence of life; if its structure were slightly different, even by an extraordinarily small degree, life would not be possible. In many people’s minds, the most straightforward explanation of this remarkable fine-tuning is some sort of divine purpose behind our universe.

This fine-tuning falls into three categories: the fine-tuning of the laws of nature, the fine-tuning of the constants of physics, and the fine-tuning of the initial conditions of the universe. “Fine-tuning of the laws of nature” refers to the fact that if the universe did not have precisely the right combination of laws, complex intelligent life would be impossible. If there were no universal attractive force (law of gravity), for example, matter would be dispersed throughout the universe and the energy sources (such as stars) needed for life would not exist. Without the strong nuclear force that binds protons and neutrons together in the nucleus, there would not be any atoms with an atomic number greater than hydrogen, and hence no complex molecules needed for life. And without the Pauli-exclusion principle, all electrons would fall to the lowest orbital of an atom, undercutting the kind of complex chemistry that life requires.

Some fundamental physical numbers governing the structure of the universe—called the constants of physics—also must fall into an exceedingly narrow range for life to exist. For example, many have estimated that the cosmological constant—a fundamental number that governs the expansion rate of empty space—must be precisely set to one part in 10120 in order for life to occur; if it were too large, the universe would have expanded too rapidly for galaxies and stars to form, and if it were too small, the universe would have collapsed back on itself. As Stephen Hawking wrote in his book A Brief History of Time, “The remarkable fact is that the values of these numbers [i.e. the constants of physics] seem to have been very finely adjusted to make possible the development of life.” Finally, the initial distribution of mass energy at the time of the big bang must have an enormously special configuration for life to occur, which Cambridge University mathematical physicist Roger Penrose has calculated to be on the order of one part in 1010123. This is an unimaginably small number.

I know what you’re thinking: How do we know that non-Christian scientists acknowledge the fine-tuning of gravity in the way that Collins describes?

Well, the New Scientist actually talks about the fine-tuning of the force of gravity. And they’re not Christians.

Excerpt:

The feebleness of gravity is something we should be grateful for. If it were a tiny bit stronger, none of us would be here to scoff at its puny nature.

The moment of the universe‘s birth created both matter and an expanding space-time in which this matter could exist. While gravity pulled the matter together, the expansion of space drew particles of matter apart – and the further apart they drifted, the weaker their mutual attraction became.

It turns out that the struggle between these two was balanced on a knife-edge. If the expansion of space had overwhelmed the pull of gravity in the newborn universe, stars, galaxies and humans would never have been able to form. If, on the other hand, gravity had been much stronger, stars and galaxies might have formed, but they would have quickly collapsed in on themselves and each other. What’s more, the gravitational distortion of space-time would have folded up the universe in a big crunch. Our cosmic history could have been over by now.

Only the middle ground, where the expansion and the gravitational strength balance to within 1 part in 1015at 1 second after the big bang, allows life to form.

Here’s a very long paper by Collins on the fine-tuning argument, where he answers several objections to the argument, including the multiverse/many-universe hypothesis.

If you want a longer response to the multiverse argument, but you don’t want to shell out big bucks for Collins’ chapter in the “Blackwell Companion to Natural Theology“, then you can just get James Sinclair’s essay in “Contending With Christianity’s Critics“.