This lecture is special to me, because I bought a VHS tape of it just after I started working full-time, and watched it a million times. A lot of people come to their convictions about God’s existence because of parents or church or intuitions, but for me it’s all about the scientific evidence. This lecture changed my life. I wish more people taught their children about this evidence! This lecture was delivered at the University of California, Santa Barbara.
Dr. Bradley received his B.S. in Engineering Science and his Ph.D. in Materials Science from the University of Texas in Austin.
Dr. Bradley taught for eight years at the Colorado School of Mines before assuming a position as Professor of Mechanical Engineering at Texas A&M University (TAMU) in 1976.
During his 24 years at Texas A&M, Dr. Bradley served as Head of the Department of Mechanical Engineering at Texas A&M University and as Director of the Polymer Technology Center, and received five College of Engineering Research Awards. He has received over $4,500,000 in research grants and has published over 140 technical articles and book chapters. He has also co-authored “The Mystery Of Life’s Origin: Reassessing Current Theories. He is a Fellow of the American Society for Materials and of the American Scientific Affiliation and serves as a consultant for many Fortune 500 companies.
He currently serves as Distinguished Professor of Engineering at Baylor University.
The lecture: (63 minutes lecture, 25 minutes audience Q&A)
Summary slide:
This slide summarizes the content of the lecture
Introduction:
At the beginning of the 20th century, people believed that the progress of science was pointing away from an intelligent Creator and Designer, and towards naturalism
A stream of new discoveries has shifted the support of science towards theism, and away from naturalism
Richard Dawkins, an atheist, says that nature only has the appearance of design, but that if you look closer, naturalistic mechanisms can account for the appearance of design
When deciding between design and apparent design (“designoid”), it matters whether you think there is an intelligence there to do the designing
Evidence #1: The Big Bang:
an eternal “steady state” universe is more compatible with naturalism, but a created universe is more compatible with a Creator
In 1929, Hubble used telescopes to observe that the light from distant galaxies was redshifted. The further away galaxies were, the faster they were moving away. Therefore, space is expanding in all directions, suggesting an explosive origin of the universe
In 1965, the discovery of the cosmic microwave background radiation matched a prediction of the Big Bang cosmology, and of the creation event
In 1992, the COBE space telescope allowed us to test four specific predictions of the Big Bang model, especially the predictions for light element abundances (hydrogen and helium), which matched the predictions of the creation model
Evidence #2: Simple mathematical structure of the physical laws
the simple mathematical structure of natural laws allows us to understand these laws, make discoveries, and engineer solutions to problems
early scientists saw the mathematical structure of the universe to mean that nature was designed by an intelligent to be understood
the fundamental equations of the laws of the universe can be easily written on one side of one sheet of paper
Eugene Wigner’s famous paper, “The Unreasonable Effectiveness of Mathematics in the Physical Sciences” makes the point that this simple structure is an unexpected gift that allows is to do science
Evidence #3: fine-tuning of the physical constants and quantities
in order for any kind of complex life to survive, we need stars that provide energy within specific ranges for long periods of time
in order for any kind of complex life to survive, we need planets with stable orbits that will not suffer from extreme temperature swings as it varies in distance from its star
in order for any kind of complex life to survive, we need stable atomic structure
in order for any kind of complex life to survive, we need to have chemical diversity and correct relative abundances of each element
organic life has minimum requirements: process energy, store information, replicate, and you can’t fulfill those functions if there is only one element, e.g. – hydrogen
the energy level from the photons from the sun have to match the energy levels of the different elements in order to drive the chemical bonding needed for life
These requirements for life of any imaginable type depend on the values of the constants and quantities. The constants and quantities cannot vary much from what they are, or the universe will lose the characteristics (above) that allow it to support complex life of any imaginable time
For example, ratio of strong force to electromagnetic force:
– if 2% larger, then no stable hydrogen, no long-lived stars, no compounds containing hydrogen, e.g. – water
– if 5% smaller, no stable stars, heavy hydrogen would be unstable, few elements other than hydrogen
Evidence #4: initial conditions for habitability
Universe: expansion rate of the universe must be fast enough to avoid a re-collapse, but slow enough to allow matter to clump together and form stars and planets for complex life to live on
Planet: right distance from the star to get the right climate
Planet: right mass to retain the right atmosphere
Evidence #5: origin of life and information theory
It’s possible to explain every process in an automobile engine using plain old naturalistic mechanisms – no supernatural explanation is necessary to understand the processes
But the existence of engine itself: engineering all the parts has to be explained by the work of an intelligence
Similarly, we can understand how living systems work, but the existence of the living systems requires an intelligence
Even the simplest living system has to perform minimal function: capture energy, store information and replicate
Living systems are composed of objects like proteins that are composed of sequences of components complex such that the order of the components gives the overall structure function
Developing the components for a simple living cell is very improbable – even given the large number of galaxies, stars and planets in the universe, it is unlikely that complex, embodied life would exist anywhere in the universe
Evidence #6: more initial conditions for habitability
Location within the galaxy: you need to be away from the center of the galaxy, because the explosions from dying stars, and excessive radiation will kill life
Location within the galaxy: you need to be close enough to the center in order catch the heavy elements you need for life from the explosions of other stars
Location within the galaxy: the best location is between two arms of a spiral galaxy, where you can get the heavy elements you need from dying stars, but without being hit with explosions and harmful radiation
Star mass: determines rate at which the sun burns, determines the energy level of photons that are used to drive chemical bonding reactions, determines the length of time the star will be stable
Star mass: star mass must be the correct value in order to allow liquid water on the planet’s surface, while still preserving stable orbit
I wish there was more curiosity about science in churches, and young Christians understood how critical science is for grounding the rationality of the Christian worldview. We need to be training up more scientists who think about the big questions, like Dr. Walter Bradley.
Dr. Graham Oppy, the moderator, is a well-known atheist philosopher. He let Dr. Krauss speak for 21 minutes and 40 seconds, which is why my summary of Krauss is so long.
The video:
Summary
After careful consideration, I decided not to be snarky at all in this summary. What you read below is what happened. There may be some small mistakes, but I will fix those if people tell me about them. I also included some quotes and timestamps for the more striking things that Dr. Krauss said.
The debate itself starts at 4:50 with Dr. Craig’s opening speech. He does use slides to show the structure of his arguments.
Dr. Craig’s opening speech. (4:50)
The kalam cosmological argument:
God is the best explanation of the origin of the universe
The Borde Guth Vilenkin theorem supports the absolute beginning of the universe
Even if our universe is part of a multiverse, the multiverse itself would have to have an absolute beginning
Speculative cosmologies try to challenge the Big Bang theory, but none of them – even if true – can establish that the past is eternal
Only two types of things could explain the origin of spece, time, matter and energy – either abstract objects or minds
Abstract objects do not cause effects, but minds do cause effects (we do it ourselves)
A mind is the best explanation for the origin of the universe
The unreasonable effectiveness of mathematics:
The underlying structure of nature is mathematical – mathematics is applicable to nature
Mathematical objects can either be abstract objects or useful fiction
Either way, there is no reason to expect that nature should be linked to abstract objects or fictions
But a divine mind that wants humans to understand nature is a better explanation for what we see
The cosmic fine-tuning for the existence of intelligent life
There are two kinds of finely-tuned initial conditions: 1) cosmological constants and 2) quantities
These constants and quantities have to be set within a narrow range in order to permit intelligent life
There are three explanations for this observation: law, chance or design
Law is rejected because they are put in at the beginning or matter – they don’t emerge from matter
Chance must be rejected, because they odds are just too long unless you appeal to a world-ensemble
We do not observe what the world ensemble hypothesis predicts that we should observe
Design is the best explanation for finely-tuned constants and quantities
The existence of objective moral values and duties
Our experience of morality (values and duties) is that it is objectively real and incumbent on us
When someone goes into a classroom and shoots at innocent children, that is objectively wrong
On naturalism, moral values and moral duties do not exist – they are conventional and variable by time and place
The best explanation for the existence of objective moral values and duties is that God exists
The historicity of the resurrection of Jesus
There are three widely-accepted facts that are best explained by the resurrection hypothesis
1) the empty tomb, 2) the post-mortem appearances, 3) the early church’s belief in the resurrection
Naturalistic attempts to explain these 3 boilerplate facts fail
The best explanation of the 3 minimal facts is that God raised Jesus from the dead
The immediate experience of God
Belief in God is a “properly basic” belief – rational even without arguments because of experience of God
Seems to be saying that logical arguments can prove false things “it’s nonsense”
Dr. Craig distorted a podcast that some group made on pain receptors
Dr. Craig’s faith is so strong that it causes him to distort what this group said
Discussion: (44:35)
I will not be summarizing everything that was said, just a few main points.
The segment from 52:18 to 57:12 about the Vilenkin e-mail on the BVG theorem is a must-see. Krauss is standing up and gesticulating while Craig is calmly trying to quote a paper by Vilenkin that shows that Krauss is misrepresenting Vilenkin. Krauss constantly interrupts him. After a while, when Craig exposes him as having misrepresented Vilenkin and gets him to admit that all current eternal models of the universe are probably wrong, he quietens down and can’t even look at Craig in the face.
Cosmological argument:
Craig: The e-mail says any universe that is expanding, on average, requires a beginning
Craig: There are two models – Aguirre & Gratton and Carroll & Chen – where there is a period of contraction before the expansion
Craig: The two models are the ones cited in the e-mail that Dr. Krauss showed
Craig: In the very paper by Vilenkin that I cited, he says that both of those models don’t work
Krauss: (agitated and interrupting) Vilenkin said that they have to make an assumption about entropy that they have no rationale for
(as Craig starts to talk Krauss makes an exaggerated, disrespectful gesture and sits down in a huff)
Craig: Yes, an unwarranted assumption means that they don’t have EVIDENCE for their theories being correct
Krauss: (agitated and interrupting) “All the evidence suggests that the universe had a beginning but WE DON’T KNOW!!!!!!!” (raising his voice)
Craig: I’m not saying that we know that the universe had a beginning with certainty
Craig: I am saying that the beginning of the universe is more probably true than false based on the evidence we have
Craig: And you agree with me about that – you think the universe had a beginning
Krauss: (agitated and interrupting) (Unintelligible)
Moderator: One at a time
Craig: In your Vilenkin e-mail slide, at the end of the paragraph where the two models are mentioned that Vilenkin specifically shows…
(I am guessing that Craig is going to ask why so much of what Vilenkin wrote has been cut out of the e-mail that Krauss showed)
Krauss: (agitated and interrupting) Because it was technical…
Moderator: Lawrence! Hang on a sec!
Craig: He specifically shows that these models are not past eternal, and that they require a beginning just like the others…
Krauss: (agitated and interrupting) We can do the math if you want
Craig: Now wait. I couldn’t help notice that there on your slide there was a series of ellipsis points indicating missing text…
Krauss: (agitated and interrupting) “Yeah, because it was technical!”
Craig: “I wonder what you deleted from the original letter”
Krauss: (agitated and interrupting) “I just told you!”
Craig: “Now wait. Could it have been something like this: (reads a quote from Vilenkin) ‘You can evade the theorem by postulating that the universe was contracting prior to some time. This sounds as if there is nothing wrong with having contraction prior to expansion. But the problem is that a contracting universe is highly unstable. Small perturbations would cause it to develop all sorts of messy singularities, so it would never make it to the expanding phase.’
Craig: “That’s Vilenkin.”
Krauss: “In this paper, that’s absolutely right”
Krauss: But it’s ok for theories to assume things that we know are wrong – they are still good theories – it’s unknown
(Craig turns away and looks through his papers)
Craig: “Isn’t it true that the only viable quantum gravity models on order today involve a beginning – have a finite past?”
Krauss: “No”
Craig: “Well, can you give us one then”
Krauss: (talks about a variety of possible eternal models) “In my experience in science, all of them are probably wrong”
Krauss: “You know most theories are wrong, which is why, you know, it’s hard”
Craig: “Right”
I noticed that a huge number of atheist web sites are taking the Vilenkin quote that Krauss used out of context, like this one and this one. There are probably a lot more of them like that, which I think is interesting. That’s why we have these debates, I guess. To set the record straight about who accuses people of being dishonest, and who is actually dishonest.
Fine-tuning:
Krauss tried to argue that he had explained the fine-tuning with the Higgs particle, but Dr. Craig said that only applied to the cosmological constant, not all the other examples of fine-tuning. Krauss said that it wasn’t impressive that this universe permitted life and that “It would have been much more surprising if we evolved in a universe in which we couldn’t live”. Krauss argued the fine-tuning was only for “Life like us”. But Dr. Craig explained that the fine-tuning is what allows us to have the basics of any kind of life, like slow-burning stars, chemical diversity, etc. – things that are required for basic minimal life functions in any living system. Craig said that he was working with the current physical laws of this universe (F = ma, etc.) and that he was looking at what changed if we changed those even slightly. Krauss tried to say that if he changed things like the mass of particles then the strength of forces would change. (But the forces aren’t laws!) Krauss argued that the cosmological constant would be even better for life if it was zero, and Craig said that the life permitting range did include zero, but that the range of life-permitting values was narrow.
Jesus’ existence:
Craig reponded to the mystery religions charge, the charge that the evidence for the minimal facts is too late/too weak, the charge that grief visions explained the evidence better, and Hume’s argument against miracles. Craig brought up the early creed from 1 Cor 15:3-7 and explained to Krauss that it was 5 years after the events, and that Jewish standards of oral transmission were strong enough to ensure that the creed was reliable, and most of the eyewitnesses would still have been alive.
Audience Q and A: (1:21:09)
The first topic is the grounding of morality. Krauss agrees that there is no objective morality and no objective moral oughts. He also said that that standards of behavior are arbitrary, and that they change over time and they are adopted for promoting social order. Dr. Craig pressed the point that science itself would collapse without ethical values. It assumes them, but cannot ground them.
The next topic was free will. Krauss is a determinist. Craig asked him how he could reconcile moral responsibility with determinism.
The next topic was the effectiveness of mathematics. Krauss didn’t have an explanation for it and didn’t think it needed one. Then they got into whether the Genesis has been verified by science and whether it is meant to be taken literally.
The next topic was whether philosophy makes any progress. Craig gave the example of verificationism being rejected as too narrow, and self-refuting. Krauss: “I’m going to come to the defense of philosophy for the first time”. Craig: “That’s amazing!” Krauss said that science provides new knowledge. Craig said there were some things that could be known apart from science.
This debate took place on March 1, 2010 at Oregon State University.
In this debate, Victor Stenger does affirm his belief that the universe could be eternal in his second rebuttal (1:02:30), thus denying the standard Big Bang cosmology. He also denies the law of conservation of energy and asserts that something can come from nothing in his concluding speech (1:33:50). He also caused the audience to start laughing when he said that Jesus was not moral and supported slavery. There is almost no snark in this summary. Instead, I quoted Dr. Stenger verbatim in many places. I still think that it is very entertaining even without the snarky paraphrasing.
The debate includes 30 minutes of Q&A with the students.
Here’s the video of the debate:
Dr. Craig’s opening speech:
The ontological argument
The contingency argument
The cosmological argument
The moral argument
The resurrection of Jesus (3-fact version)
Religious experience
Dr. Stenger’s opening speech:
There is no scientific evidence for God’s existence in the textbooks
There is no scientific evidence for God acting in the universe
God doesn’t talk to people and tell them things they couldn’t possibly know
The Bible says that the Earth is flat, etc.
There is no scientific evidence that God answers prayers
God doesn’t exist because people who believe in him are ignorant
Human life is not optimally designed and appears to be the result of a blind, ad hoc evolutionary process
The beginning of the universe is not ordered (low entropy) but random and chaotic
It’s theoretically possible that quantum tunneling explains the origin of the universe
The laws of physics are not objectively real, they are “our inventions”
Regarding the beginning of the universe, the explanation is that something came from nothing*
Nothing* isn’t really nothing, it is “the total chaos that we project existed just before the big bang”
If something has no structure, then “it is as much nothing as nothing can be”
Consciousness is explainable solely on the basis of material processes
There are well-informed, rational non-believers in the world and God would not allow that
Dr. Craig’s first rebuttal:
Stenger’s argument that there is no objective evidence for God’s existence:
First, it is not required that God rely only on objective evidence in order to draw people to himself (Alvin Plantinga)
Second, God is not required to provide evidence to everyone, only to the people who he knows would respond to him
Third, Craig gave lots of objective evidence, from science, history and philosophy
Stenger asks for certain evidence (answered prayers, prophecy, etc.), but Craig presented the evidence we have
Stenger’s argument that the balance of energy is zero so “nothing” exists:
if you have the same amount of assets and liabilities, it doesn’t mean that nothing exists – your assets and liabilities exist
Christopher Isham says that there needs to be a cause to create the positive and negative energy even if they balance
the quantum gravity model contradicts observations
the vacuum is not the same as nothing, it contains energy and matter
the BVG theorem proves that any universe that is expanding must have a beginning
Stenger’s argument that mental operations can be reduced to physical operations:
mental properties are not reducible to physical properties
epiphenomenalism: is incompatible with self-identity over time
epiphenomenalism: is incompatible with thoughts about other things
epiphenomenalism: is incompatible with free will
substance dualism (mind/body dualism) is a better explanation for our mental experience
God is a soul without a body
Dr. Stenger’s first rebuttal:
Craig’s cosmological argument:
Craig’s premise is “everything has a cause”, but quantum mechanics has causeless events
There are speculative theories about how something could have come into being uncaused out of nothing
“I don’t know of a single working cosmologist today who believes there was a singularity prior to the Big Bang”
“If there wasn’t a singularity then there’s no basis for arguing that time began at that point”
“There’s no reason from cosmology that we know of that the universe can’t be eternal”
“When I talk about an eternal universe, I mean a universe that has no beginning or end”
The Hartle-Hawking model doesn’t have a beginning
“There was no violation of energy conservation by having a universe coming from nothing”
“The universe could have come from a previous universe for example or even just from a region of chaos”
The paper by Vilenkin is counteracted by other papers (he doesn’t specify which ones)
Craig’s moral argument:
Dr. Craig is arguing from ignorance
But morality can be decided by humanity just like governments pass laws, and that’s objective
Dr. Craig has too little respect for the human intellect
I don’t need to tell me that slavery is wrong
The Bible supports slavery
Atheists can behave as good as theists
Morality just evolved naturally as an aid to survival
Craig’s resurrection argument:
No Roman historians wrote about the execution of Jesus
The empty tomb is doubtful because it is only mentioned in the gospels, not by Paul
John Dominic Crossan says there was no empty tomb
Christianity only survived because the Roman empire thought that they were useful
Dr. Craig’s second rebuttal:
Craig’s cosmological argument:
There is no reason to prefer an indeterministic interpretation of quantum mechanics
Dr. Stenger himself wrote that deterministic interpretations of quantum mechanics are possible
The vacuum in quantum mechanics is not nothing
The quantum vacuum he proposes cannot be eternal
The cosmological argument does not require a singularity
The Hartle-Hawking model is from 1983
Hawking says that there is a beginning of space and time after that model
The Hartle-Hawking model does still have a beginning of time – the model is not eternal
The BVG theorem that requires a beginning for expanding universes is widely accepted among cosmologists
Craig’s moral argument:
Stenger redefined objective to mean that most people agree with it – but that’s not what objective means
Objective means right and wrong whether anyone accepts it or not
Richard Dawkins himself says that on atheism there is “no evil and no good” – why is he wrong?
Even Dr. Stenger says that morality is the same as passing laws – it’s arbitrary and varies by time and place
But on his view, right and wrong are the same as deciding which side of the road to drive on
But somethings really are right and some things are really wrong
Craig’s resurrection argument:
Josephus is a Roman historian and he wrote about Jesus, for example
There were four biographies of Jesus are the best sources for his life
The scholars that Stenger mentioned are on the radical fringe
Dr. Stenger’s second rebuttal:
Knowledge and the burden of proof:
Dr. Craig has to bear the burden of proof, not me – because his claim is more “extravagant”
“I don’t have to prove that a God was not necessary to create the universe”
“I don’t have to prove that a God did not design the universe and life”
“I don’t have to prove that the universe did not have a beginning”
“I don’t have to prove that God did not provide us with our moral sense”
There are a lot of books written about how morality evolved naturally
“I don’t have to prove that the events surrounding the supposed resurrection of Jesus did not take place”
Bart Ehrman says that the gospels are generally unreliable (Note: Ehrman accepts all 3 of Craig’s minimal facts)
Just because people are willing to die for a cause, does not make their leader God, e.g. – the Emperor of Japan
Aesthetic concerns about the universe:
I don’t like dark matter and I wouldn’t have made the universe with dark matter
I don’t like the doctrine of penal substitution
I don’t like the doctrine of original sin
I don’t like the heat death of the universe
Dr. Craig’s conclusion:
The case for atheism:
Dr. Stenger had two arguments and he has to support his premises
Dr. Craig addressed his two arguments and each premise and Dr. Stenger never came back on it
The contingency argument:
Dr. Stenger has dropped the refutation of this argument
The cosmological argument:
The theoretical vacuum he proposes cannot be eternal
The moral argument:
He asserts that things are wrong, but there is no grounding for that to be objective on atheism
The resurrection of Jesus:
There are surveys of scholars on the empty tomb and 75% of them agree with it
Bart Ehrman agrees with all 3 of the minimal facts that Dr. Craig presented
Ehrman’s objection to the resurrection is not historical: he’s an atheist – he thinks miracles are impossible
Religious experience:
No response from Dr. Stenger
Dr. Stenger’s conclusion
The cosmological argument:
“I argued that we have very good physical reasons to understand how something can come from nothing”
“There is a natural tendency in the universe… to go from.. simpler thing to the more complicated thing”
The transition from a vapor to a liquid to ice shows how something could come from nothing
“It cannot be proven that the universe had a beginning”
The moral argument:
Objective morality, which is independent of what people think, could be developed based on what people think
“Jesus himself was not a tremendously moral person… he had no particular regard for the poor… he certainly supported slavery… he was for the subjugation of women” (audience laughter)
The resurrection argument:
Bart Ehrman says that the majority of the gospels are unreliable
Religious experience:
I don’t see any evidence that there is anything more to religious experience than just stuff in their heads
God’s purpose of the world should be to make people feel happy:
God could have made people feel happier
God could have made people not die
God could could have made the universe smaller: it’s too big
God could have made it possible for humans to live anywhere “even in space”
WINTERY KNIGHT 