Tag Archives: Apologetics

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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.

News

Jeff Hester debates William Lane Craig on the topic “Is Belief in God Rational in a Scientific Age?”

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This is an accurate protrayal of what went down in this debate
This is an accurate protrayal of what went down in this debate

I was very excited to see a recent debate by Christian philosopher William Lane Craig against atheist astronomer Jeff Hester. When I summarize a debate, I do a fair, objective summary if the atheist is intelligent and informed, as with Peter Millican, Walter Sinnott-Armstrong or Austin Dacey. But the following summary is rated VS for Very Snarky, and you’ll soon see why.

The debate itself starts at 29 minutes:

The audio is very poor.

Dr. Craig’s opening speech

Dr. Craig went first, and he presented 4 arguments, as well as the ontological argument which I won’t summarize or discuss. He later added another argument for theism from the existence of the universe that does not require an origin of the universe.

A1. Counter-examples

Theists who are elite scientists cannot be “irrational”, for example: Allan Sandage, Gustav Tammann, George Ellis, Don Page, Christopher Isham

A2. Kalam cosmological argument

  1. Whatever begins to exist requires a cause.
  2. The universe began to exist.
  3. Therefore, the universe requires a cause.

A3. Fine-tuning of the universe to permit complex intelligent life

  1. The fine-tuning of the universe is due either to physical necessity, chance or design.
  2. It is not due to physical necessity or chance.
  3. Therefore it is due to design.

A4. Moral argument

  1. If God does not exist, objective moral values and duties do not exist.
  2. Objective moral values and duties do exist.
  3. Therefore, God exists.

Dr. Hester’s opening speech

Dr. Hester went second and presented two arguments which both committed the genetic fallacy, a logical fallacy that makes the arguments have no force.

Hester starts his opening speech by asserting that Albert Einstein was irrational, because he denied quantum mechanics.

Hester explains that he became an atheist at 15. This would have been before the evidence for the origin of the universe became widespread, before we had very many examples of fine-tuning, before the discovery that the origin of life problem is a problem of the origin of complex, specifed information, etc. What kind of reasons can a 15-year-old child have for becoming an atheist? It’s hard to say, but I would suspect that they were psychological. Children often desire autonomy from moral authorities. They want to be free to pursue pleasure. They don’t want to be thought of as superstitious and morally straight by their non-religious peers.

Later on in the debate, Hester volunteers that he hated his father because his father professed to be a Christian, but he was focused on his career and making money. In the absence of any arguments for atheism, it’s reasonable to speculate that Hester became an atheist for psychological reasons. And as we’ll see, just like the typical 15-year-old child, he has no rational basis for atheism. What’s astonishing is how he continues to hold to the atheism of his teens when it has been falsified over and over by scientific discoveries in the years since.

Dr. Craig’s deductive arguments do  have premises that reach a conclusion through the laws of logic. On the contrary, he just asserts that God exists as his conclusion, and then says that this assertion is the best explanation of a gap in our scientific knowledge. Some of the gaps in our scientific knowledge he uses in his arguments are: 1) he doesn’t understand why the Sun moves through the sky, so God exists, 2) he doesn’t understand why the wind blows, so God exists.

What counts as “rational” are things that have not been disproved. The progress of science has shown that the universe did not need a casuse in order to begin to exist, and also there is no cosmic fine-tuning.

A1. The success of evolution in the software industry proves that there is no God

All hardware and software is developed using genetic algorithms that exactly match Darwinian processes. All the major computer companies like Google, Microsoft, Amazon, Apple, etc. are just generating products using mutation and selection to evolve products over long periods of time. If you look over a typical software engineering degree, it’s all about Darwinian evolution, and nothing about design patterns, object-oriented design, etc.

This widespread use of evolution in the software industry undermines all of the arguments for God’s existence. Evolution caused the origin of the universe. Evolution explains why the universe is fine-tuned for life. Evolution, which requires replication already be in place in order to work, explains the origin of the first self-replicating organism.

A2. Theist’s view of the world is just a result of peer pressure from their tribes

All of Dr. Craig’s logical arguments supported by scientific evidence don’t matter, because he got them from a primitive tribe of Christians that existed 2000 years ago. Everyone gets their view of origins, morality, meaning in life, death, etc. from their tribes. Except me, I’m getting my beliefs from reason and evidence because I’m a smart atheist. I don’t have an atheist tribe in the university that would sanction me if I disagreed with nonsense like homosexuality is 100% genetic, transgenderism, man-made catastrophic global warming, fully naturalistic evolution, aliens seeded the Earth with life, infanticide is moral, socialism works, overpopulation will cause mass starvation, nuclear winter, etc. Also, my argument isn’t the genetic fallacy at all, because smart atheists don’t commit elementary logical fallacies that even a first-year philosophy student would know.

A3. Our brains evolved so our rational faculties are unreliable, so God does not exist

The logical reasoning that Dr. Craig uses to argue for theism are all nonsense, because human minds just have an illusion of consciousness, an illusion of rationality, and an illusion of free will. Everything Dr. Craig says is just deluded nonsense caused by chemicals in his brain. He has cognitive biases the undermine all his logical arguments and scientific evidence. He just invented an imaginary friend with super powers. Except me, I’m a smart atheist, so I actually have real consciousness, real reasoning powers, and no cognitive biases. Also, my argument isn’t the genetic fallacy at all, because my arguments would not get an F in a first-year philosophy course.

Discussion

I’m not going to summarize everything in the discussion, or the question and answer time. I’m just going to list out some of the more interesting points.

Dr. Craig asks him how it is that he has managed to escape these biases from tribalism, projection, etc. He talks about how brave and noble atheist rebels are. The moderator asks him the same question. He repeats how brave and noble atheist rebels are.

Dr. Hester is asked whether he affirms a causeless beginning of the universe or an eternal universe. He replies he states that the universe came into being without a cause, because causality doesn’t apply to the beignning of the universe. He also asserts with explanation that Borde, Guth and Vilenkin have undermined the kalam cosmological argument, mentioning a web site.

Dr. Craig replied to this phantom argument after the debate on Facebook:

Speaking of which, although I haven’t had time to consult the website mentioned by Dr. Hester concerning Guth and Vilenkin on the kalam cosmological argument, I know the work of these two gentlemen well enough to predict what one will find there. Since neither one is yet a theist (so much, by the way, for the dreaded confirmation bias!), they have to reject at least one of the premises of the kalam cosmological argument.

Guth wants to deny premiss (2) The universe began to exist–for which Vilenkin has rebuked him. Guth would avoid the implications of their theorem by holding our hope for the Carroll-Chen model, which denies the single condition of the BGV theorem. This gambit is, however, unsuccessful, since the Carroll-Chen model does so only by positing a reversal of the arrow of time at some point in the finite past. This is not only highly non-physical, but fails to avert the universe’s beginning, since that time-reversed, mirror universe is no sense in our past. The model really postulates two different universes with a common beginning.

So Vilenkin is forced to deny premiss (1) Whatever begins to exists has a cause. He says that if the positive energy associated with matter exactly counterbalances the negative energy associated with gravity, then the net sum of the energy is zero, and so the conservation of energy is not violated if the universe pops into being from nothing! But this is like saying that if your assets exactly balance your debts, then your net worth is zero, and so there does not need to be a cause of your financial situation! As Christopher Isham points out, there still needs to be “ontic seeding” in order to create the positive and negative energy in the first place, even if on balance their sum is zero.

Dr. Hester is asked how he explains the evidence for fine-tuning. He literally says that “Life is fine-tuned for the Universe”, i.e. – that evolution will create living beings regardless of the laws of physics, constants, etc. For example, he thinks that in a universe with a weaker stong force, which would have only hyrogen atoms, evolution would still evolve life. And in a universe that recollapses in a hot fireball, and never forms stars or planets, evolution would produce life. Physicist Luke Barnes, who was commenting on the YouTube chat for the video, said this:

“Life is fine-tuned for the Universe” – complete ignorance of the field. Read a book.

Hester tries to cite Jeremy England to try to argue for life appearing regardless of what the laws of physics are. Barnes comments:

Jeremy England’s work supports no such claim.

Hester appealed to the multiverse, which faces numerous theoretical and observational difficulties. For example, the multiverse models have to have some mechanism to spawn different universes, but these mechanisms themselves require fine-tuning, as Robin Collins argues. And the multiverse is falsified observationally by the Boltzmann brains problem. It was so ironic that Hester claimed to be so committed to testing theories. The mutliverse theory cannot be tested experimentally, and must be accepted on faith.

Dr. Hester is asked how he grounds morality on atheism. He says there are no objective moral values and duties. He instead lists off a bunch of Christian beliefs which he thinks are objectively wrong. Even his statements about these moral issues are misinformed. For example, he asserts that homosexuality is causally determined by biology, but this is contradicted by identical twin studies that have a rate of 20-40% where both twins are gay.

Dr. Hester is asked about free will, which is required in order to make moral choices. He denies the existence of free will, which undermines his earlier statements about morality. Morality is only possible if humans can make free choices to act in accordance with a moral standard. So, he claims that Christians are immoral, then he claims that they have no freedom to act other than they do.

Dr. Hester also volunteered that his father believed in the prosperity gospel, and tithed in order to be rewarded with money by God. Dr. Craig immediately says “no wonder you’re in rebellion against Christianity”. Indeed.

Dr. Hester is asked about his view that human beings are unable to unable to perceive the world objectively. How is he able to perceive the world objectively, when all of the rest of us are unable to? His response is that he is just smarter than everyone else because his ideas have never been falsified by testing.

Scoring the debate

Dr. Craig’s 5 arguments went unrefuted. Hester’s argument about genetic algorithms was ludicrous to anyone who understands software engineering. His arguments about tribalism and unreliable mental faculties were self-refuting, and committed the genetic fallcy. At several points, Hester denied mainstream science in favor of untested and untestable speculations. It was the worst defeat of atheism I have ever witnessed. He was uninformed and arrogant. He didn’t know what he was talking about, and he tried to resort to speculative, mystical bullshit to cover up his failure to meet Dr. Craig’s challenge.

Polemics

What is the fine-tuning argument for God’s existence, and does the multiverse counter it?

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Christianity and the progress of science
Christianity and the progress of science

One of the best arguments for the existence of a Creator and Designer of the universe is the cosmic fine-tuning argument. The argument argues that individual constants and quantities in nature cannot be much smaller or larger than they are, because it would remove the ability of the universe to support life of any kind. Dr. Michael Strauss, an experimental physicist, explains some examples of the fine-tuning in a recent post on his blog.

He writes:

I liken the finely-tuned universe to a panel that controls the parameters of the universe with about 100 knobs that can be set to certain values. If you turn any knob just a little to the right or to the left the result is either a universe that is inhospitable to life or no universe at all.

Consider the knob that controls the strength of the strong nuclear force that holds quarks inside the neutrons and protons and binds the nucleus of the atom together. If the strength were increased by 2%, the element hydrogen would be either non-existent or very rare. Without hydrogen there would be no water (H2O) or stars that burn hydrogen as their nuclear fuel like our sun.  Without hydrogen there would be no life. If the strength of the strong nuclear force were decreased by about 5%, then hydrogen would be the only element in the universe. That would simplify the periodic table and make Chemistry class very easy, but it would render life impossible.

All known life in this universe is based on the element carbon, which is formed in the final stages of a star’s life. The carbon you and I are made of is the result of the nuclear processes that occurred as previous stars ended their lives. One nice recent study showed that if the mass of the quarks that make up neutrons and protons were changed by just a few percent, then the process that makes carbon as stars die would be altered in such a way that there would not be sufficient carbon in the universe for life. The masses of the lightest sub-atomic quarks are the precise value that is required for carbon to form and for life to exist.

Regarding the multiverse, let me just quote from MIT physicist Alan Lightman, writing in Harper’s magazine about the multiverse:

The… conjecture that there are many other worlds… [T]here is no way they can prove this conjecture. That same uncertainty disturbs many physicists who are adjusting to the idea of the multiverse. Not only must we accept that basic properties of our universe are accidental and uncalculable. In addition, we must believe in the existence of many other universes. But we have no conceivable way of observing these other universes and cannot prove their existence. Thus, to explain what we see in the world and in our mental deductions, we must believe in what we cannot prove.

Sound familiar? Theologians are accustomed to taking some beliefs on faith. Scientists are not. All we can do is hope that the same theories that predict the multiverse also produce many other predictions that we can test here in our own universe. But the other universes themselves will almost certainly remain a conjecture.

The multiverse is not pure nonsense, it is theoretically possible.But even if there were a multiverse, the generator that makes the universes itself would require fine-tuning, so the multiverse doesn’t get rid of the problem. And, as Lightman indicates, we have no independent experimental evidence for the existence of the multiverse in any case. Atheists just have to take it on faith, and hope that their speculations will be proved right. Meanwhile, the fine-tuning is just as easily explained by postulating God, and we have independent evidence for God’s existence, like the the origin of biological information, the sudden appearance of animal body plans, the argument from consciousness, and so on. Even if the naturalists could explain the fine-tuning, they would still have a lot of explaining to do. Theism (intelligent causation) is the simplest explanation for all of the things we learn from the progress of science.

It’s very important to understand that if these values were any different, then it’s not like we would bridges on our foreheads, or have green skin, or have pointy ears, etc. That’s what science fiction teaches you. And many atheists form their view of science by watching science fiction entertainment. But the truth is that the consequences of changing these values are much more consequential: no stars, no planets, no hydrogen, no heavy elements, the universe re-collapses into a hot fireball. You’re not going to have complex, embodied intelligent agents running around making moral decisions and relating to God in a world like that.

Questions like the existence of God should be NOT decided by feelings and faith and superstitious nonsense. They ought to be decided by evidence. Specifically, scientific evidence. Everyone has to account for this scientific evidence for fine-tuning within their worldview, and they have to account for it in a way that is responsible and rational. Punting to the multiverse, without any evidence for it, is neither rational nor responsible. Holding out hope that the evidence we have now will all go away is neither rational nor responsible.

By the way, if you are looking for a good book on the cosmic fine-tuning, especially for evangelism and debating with atheists, you really need to get a copy of “A Fortunate Universe“. Although it is from one of the most prestigious academic presses, it is pretty funny to read, and the main points are made clearly, even if you don’t understand the science. Two astrophysicists wrote it – one who believes that God is the best explanation of the fine-tuning, and one who doesn’t. I really think that Christians need to get used to the idea that evangelism can be pretty easy, so long as you are arguing from peer-reviewed facts. When you get a good book on evidence for God that is not in dispute, then you are invincible. Everybody ought to believe in God in a universe with this much overt scientific evidence spilling out everywhere. Whether this Creator and Designer is the God of the Bible, who visited us as Jesus of Nazareth, takes more work to establish. Working through the emotional objections people have to God, and coaching them to take on the difficulties of living out a authentic Christian life (very unpopular!), is even harder.