Tag Archives: Logic

Summary and audio: William Lane Craig debates Alex Rosenberg: Does God Exist?

Below, please find my summary of the Craig-Rosenberg debate, which occurred on February 1st, 2013 at Purdue University. The debate was streamed over the Internet live.

Brian Auten has posted the MP3 audio of the debate at Apologetics 315. Everybody bookmark that web site for the fastest access to debate audio. J.W. Wartick has a review of the debate here. Tom Gilson has a review of the debate here. Here’s another review of the debate from Carson Witnauer.

The debaters

William Lane Craig:

William Lane Craig is Research Professor of Philosophy at Talbot School of Theology in La Mirada, California.

Dr. Craig pursued his undergraduate studies at Wheaton College (B.A. 1971) and graduate studies at Trinity Evangelical Divinity School (M.A. 1974; M.A. 1975), the University of Birmingham (England) (Ph.D. 1977), and the University of Munich (Germany) (D.Theol. 1984). From 1980-86 he taught Philosophy of Religion at Trinity… In 1987 they moved to Brussels, Belgium, where Dr. Craig pursued research at the University of Louvain until assuming his position at Talbot in 1994.

He has authored or edited over thirty books, including The Kalam Cosmological ArgumentAssessing the New Testament Evidence for the Historicity of the Resurrection of JesusDivine Foreknowledge and Human FreedomTheism, Atheism and Big Bang Cosmology; and God, Time and Eternity, as well as over a hundred articles in professional journals of philosophy and theology, including The Journal of PhilosophyNew Testament StudiesJournal for the Study of the New TestamentAmerican Philosophical QuarterlyPhilosophical StudiesPhilosophy, and British Journal for Philosophy of Science.

Craig’s CV is here.

Craig’s list of publications is here.

Alex Rosenberg:

I joined the Duke faculty in 2000. Previously I was professor of philosophy at Dalhouse University in Canada, Syracuse University, University of California, Riverside and at the University of Georgia, in the US. I have also been a visiting professor and/or fellow of the Center for Philosophy of Science at the University of Minnesota, as well as the University of California, Santa Cruz, Oxford University (Balliol College) and the Research School of Social Science of the Australian National University. Here at Duke, I am co-director of the Center for Philosophy of Biology, along with Robert Brandon, Dan McShea and Fred Nijhout.

In addition I am the director of the AB Duke Scholarship Program and its associated summer Duke in Oxford Program at New College. Along with Professor Martha Reeves of the Sociology Department I co-direct Duke’s summer program on Globalization in Geneva. Check the links below for more information on these programs.

My interests focus on problems in metaphysics, mainly surrounding causality, the philosophy of social sciences, especially economics, and most of all, the philosophy of biology, in particular the relationship between molecular, functional and evolutionary biology.

Below is the summary from tonight (February 1st, 2013).

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Summary of the debate

Dr. Craig’s opening speech:

The topic: What are the arguments that make belief in God reasonable or unreasonable?
First speech: arguments for reasonableness of belief in God
Second speech: respond to arguments against reasonableness of belief in God

Eight arguments:

  1. Contingency argument: God – a transcendent, personal being – is the explanation of why a contingent universe exists.
  2. Cosmological argument: God is the cause of the beginning of the universe, which is attested by physics and cosmology.
  3. Applicability of mathematics to nature: God is the best explanation for the applicability of mathematics to nature.
  4. Fine-tuning argument: God is the best explanation of the fine-tuning of the universe to permit life.
  5. Intentionality of conscious states: God is the best explanation of the intentionality of our mental states.
  6. The moral argument: God is the best explanation for the existence of objective moral values and duties.
  7. The resurrection of Jesus: God is the best explanation for the core of historical facts accepted by most ancient historians across the ideological spectrum.
  8. Religious experience: God is the best explanation of our immediate experience and knowledge of his existence.

Dr. Rosenberg’s opening speech

First argument: The fallacy of ad hominem

  • I don’t know whether to laugh or to cry
  • Dr. Craig has said all of that before in other debates
  • You didn’t need to come out on this cold night
  • Craig’s arguments have all been refuted
  • Dr. Craig just doesn’t listen
  • Dr. Craig is not interested in getting at the truth
  • Dr. Craig is just interested in scoring debate points
  • The adversarial system is the wrong approach to decide truth
  • Dr. Craig is very confident about his take of physics

Second argument: The fallacy of arguing from authority

  • 95% of members of the NAS are atheists
  • Therefore Dr. Craig cannot use science

Third argument: Effects don’t require causes

  • I am going to pretend that Craig said that “every effect requires a cause”
  • Quantum mechanics shows that some effects occur without causes
  • A particle of uranium (which is not nothing, it is something) decays without a cause
  • This uncaused effect is the same as the universe coming into being out of nothing uncaused
  • Therefore the principle of sufficient reason is false

Fourth argument: Silicon-based life and the multiverse

  • If these constants had been different, maybe we would have other kinds of intelligent life, like silicon-based life
  • Carbon-based life is not the only kind of life, maybe you can have other kinds of life, none of which have been observed
  • There could be different kinds of life in other areas of the universe that we can’t see
  • There are things we can’t see that disprove the current physics that we can see
  • Quantum foam is evidence that a multiverse exists
  • The multiverse would solve the problem of fine-tuning

Fifth argument: The Euthyphro dilemma

  • The moral argument is refuted by Euthyphro dilemma
  • Dr. Craig is such a moron that he has never heard of the Euthyphro dilemma ever before
  • This is found in the first and simplest of Plato’s dialogs
  • Why is Dr. Craig so stupid that he has not read this simple dialog ever before?
  • Evolution explains why humans evolve arbitrary customs and conventions that vary by time and place
  • Alternative moral theories: utilitarianism, social contract, etc. that don’t require God

Sixth argument: Mormonism undermines Dr. Craig’s three minimal facts about Jesus

  • Why is Dr. Craig so stupid and ignorant to persist in pushing such an ignorant, stupid argument?
  • Mormonism is a silly religion that is not historically well founded
  • Therefore, Jesus was not buried
  • Islam is a silly religion that is not historically grounded
  • Therefore, the tomb was not found empty
  • Scientology is a silly religion that is not historically grounded
  • Therefore, the eyewitnesses didn’t have post-mortem appearances
  • Eyewitness testimony is unreliable in some cases
  • Therefore, eyewitness testimony was unreliable in this case
  • Apparitions of Mary are bizarre
  • Therefore, the majority of historians are wrong to think that the disciples saw post-mortem appearances

Seventh argument: Deductive problem of evil

  • Evil and suffering are logically incompatible with an all good, all powerful God

Eight argument: God is not just to allow evil and suffering

  • God cannot make the evils of this life right in the afterlife

Dr. Craig’s first rebuttal

Dr. Rosenberg sketched the deductive argument from evil.

Dr. Rosenberg presupposes naturalism. Naturalism is a false theory of knowledge:

1. It’s too restrictive: There are truths that cannot be proved by natural science.
2. It’s self-refuting: no scientific proof for naturalism exists.

That’s why epistemological naturalism is considered false by most philosophers of science.

But more importantly than that: Epistemological naturalism does not imply metaphysical naturalism. (E.g. – W. Quine)

Dr. Rosenberg has to present arguments in favor of (metaphysical) naturalism, not just assume that (metaphysical) naturalism is true.

Dr. Craig presented eight arguments against metaphysical naturalism taken from Rosenberg’s own book:

1. The argument from the intentionality (aboutness) of mental states implies non-physical minds (dualism), which is incompatible with naturalism
2. The existence of meaning in language is incompatible with naturalism, Rosenberg even says that all the sentences in his own book are meaningless
3. The existence of truth is incompatible with naturalism
4. The argument from moral praise and blame is incompatible with naturalism
5. Libertarian freedom (free will) is incompatible with naturalism
6. Purpose is incompatible with naturalism
7. The enduring concept of self is incompatible with naturalism
8. The experience of first-person subjectivity (“I”) is incompatible with naturalism

Metaphysical naturalism is false: it is irrational and it contradicts our experience of ourselves.

And epistemological naturalism is compatible with theism.

Rebutting Dr. Rosenberg’s responses:

1. Contingency: no response

2. Cosmological: he mis-states the first premise to say every effect… when it is whatever begins to exist…, the origin of the universe was not from a vacuum, virtual particles come from a vacuum not nothing, there are interpretations of QM that are compatible with determinism. Rosenberg has to believe that the entire universe popped into being from non-being.

3. Mathematics: no response

4. Fine-tuning: the multiverse is refuted by empirical observations of the universe. Without fine-tuning, it’s not that we still have silicon to make life out of. It’s that we lose basic minimal things like chemical diversity, matter, stars, planets, etc. No life of any kind, not just no carbon-based life.

5. Intentionality: no response.

6. Moral argument: the answer to the dilemma is that you split the dilemma: God is the standard of good, and the commands flow from his unchanging moral nature. The commands are not arbitrary, and the standard is not external to God. Dr. Rosenberg is a nihilist and he cannot ground good and evil on his nihilistic view.

7. Resurrection: The Gospels are early eyewitness testimony. Mormonism and Islam have nothing to do with the minimal set of historical facts about Jesus agreed to by the majority of ancient historians across the ideological spectrum, general statements against eyewitnesses do not refute the specific eyewitness testimony in this case.

8. Religious experience: No response.

Dr. Rosenberg’s first rebuttal

I wrote a book and you should buy it, because it got me invited to this debate. Let me repeat the title a few times for you. Please buy it.

Dr. Craig is right, there are multiple interpretations of QM, not just the one I presented, including deterministic ones.

All the disturbing implications of naturalism that Dr. Craig stated follow from metaphysical naturalism, and metaphysical naturalism is true. (Note: he equates science with metaphysical naturalism)

Science proves that metaphysical naturalism is true, but I won’t say what specific scientific tests prove my philosophical assumption of metaphysical naturalism.

I’ll pretend that the Big Bang (science) doesn’t disprove naturalism, like Dr. Craig said. Again. (covers ears) La la la, there is no Big Bang.

We didn’t come here to debate epistemological naturalism and metaphysical naturalism.

Let me explain the problem of intentionality since I’m so smart and no one knows what it means.

There are many answers to this problem of intentionality.

My answer is that most scientists are naturalists, therefore naturalism is true, regardless of the argument from intentionality of mental states.

That’s how I would respond to one of the eight problems with naturalism that Dr. Craig raised. I won’t answer the other seven problems.

It is an argument from ignorance to argue that the applicability of mathematics to the universe requires a designer, because there are non-Euclidean geometries. Craig’s argument, which he gets from people like respected physicists like Eugene Wigner, is bizarre. It is bizarre, therefore I refute Eugene Wigner and all the other scholars who make that argument. It is bizarre! Bizarre!

Deductive problem of evil: there is no response to this argument, certainly not Alvin Plantinga’s free will defense. The deductive argument from evil has not been entirely abandoned at all! It’s not like arch-atheist J.L. Mackie himself admits that the deductive problem of evil doesn’t lead to a logical inconsistency between evil and God.

Dr. Craig has to tell me why God allows evil or God doesn’t exist.

It is offensive that Dr. Craig cannot tell me why God allows every evil and suffering that occurs.

He literally said this: “I will become a Christian if Dr. Craig can tell me why God allowed EVERY EVIL THAT OCCURRED IN THE LAST 3.5 BILLION YEARS”

Dr. Craig’s second rebuttal

We are not in a position to know why God allows specific instances of evil and suffering.

God cannot force people to freely do anything – freedom is not compatible with determinism. Freedom is a good, but freedom opens up the possibility of moral evil. You cannot have the good of free will without allowing people to choose to do morally evil things.

God can permit evil and suffering in order to bring more people into a relationship with him.

The atheist has to show that God could allow less evil and achieve more knowledge of God in order to say there is too much evil.

The purpose of life is not happiness, but knowledge of God.

Dr. Craig quotes agnostic Paul Draper (Purdue) and Peter Van Inwagen (Notre Dame) to state that the deductive problem of evil is dead because of free will and morally sufficient reasons for permitting evil.

1. Contingency: no response.

2. Cosmological: QM does not apply, because the universe came from nothing, not a vacuum, and QM only works in a vacuum.

3. Mathematics: He mentions alternatives like non-Euclidean geometry, but we have to explain the structure of THIS universe.

4. Fine-tuning: ???

5. Intentional states: intentional mental states proves that minds exist, which fits with theism better than it fits with atheism.

6. Moral argument: You need God to ground morality, and Dr. Rosenberg believes in morality. He needs God to ground objective moral values and duties.

7. Historical argument: He has to respond to the minimal facts supported by the consensus of ancient historians across the ideological spectrum.

8. The problems of naturalism: He says that you can’t have science without naturalism, but you can have science with EPISTEMOLOGICAL NATURALISM, and theists accept science and methodological naturalism. We don’t accept METAPHYSCIAL NATURALISM because of the eight problems Craig presented, like intentionality, first-person, persistence of self, etc. You can believe in both science and theism, by embracing epistemological naturalism, while rejecting methaphysical naturalism.

Dr. Rosenberg’s second rebuttal

Dr. Craig hasn’t answered many of my points, I won’t say which ones though.

Debates don’t work as a way of deciding what’s true, so we should overturn the entire criminal justice system.

The principle of sufficient reason is false because it is disconfirmed by quantum mechanics. And quantum mechanics (vacuum and virtual particles that exist for a short time) is similar to the origin of the universe (nothing and entire universe and 14 billion years).

We know that alpha particles come into being without cause all the time from a quantum vacuum for a tiny sub-second duration before going out of existence, so we can say that the entire physical universe came into being for 14 billion years from absolute nothing which is not a quantum vacuum.

Peter Van Inwagen is the best metaphysician working today, and he says that my deductive argument from evil is not decisive, it’s not a successful argument. (Why is he undermining his own problem of evil argument????!)

Dr. Craig invoked Plantinga’s free will defense to the deductive POE. Freedom allows us to do evil. God could have given us free will without evil and suffering. I won’t show how, but I’ll just assert it, because debates are such a bad forum for supplying evidence for my speculative assertions.

If you answer the question 3 + 5 as being 8, then you don’t have free will – you are biologically determined if you answer 8, because everyone answers 8, and that means everyone is biologically determined with no free will.

Why can’t God give us free will and then prevent us from making a free choice?

No scholars date the gospels earlier than 60-70 AD, especially not atheists like James Crossley who dates Mark to 40 AD. Therefore Jesus’ burial isn’t historical, like the majority of scholars across the broad spectrum of scholarship agree it is.

The original New Testament documents were written in Aramaic.

All New Testament scholars are orthodox Christians, like atheist Robert Funk for example.

Dr. Craig’s concluding speech

In order to sustain the deductive argument from evil, Dr. Rosenberg must show that God could create a world of free creatures with less evil.

Principle of Sufficient Reason: not using the general principle of sufficient reason, but a more modest version of this states that contingent things should have an explanation for their existence. And we know that the universe is a contingent.

The New Testament was not written in Aramaic, they were written in Greek. Dr. Rosenberg is wrong there too.

(Dr. Craig spends the rest of his concluding speech giving his testimony and urging people to investigate the New testament).

Dr. Rosenberg’s concluding speech

Some long-dead French guy named Laplace said that he has no need of that (God) hypothesis. He did not know about any of Dr. Craig’s arguments made in this debate tonight when he said that, though.

There is no need to explain how the universe began or how the universe is finely-tuned if you just assume metaphysical naturalism on faith.

The Easter Bunny, therefore atheism.

Most scientists are atheists, therefore atheism.

You can do a lot of science without God, just don’t look at the origin of the universe, the fine-tuning of the universe, or the other parts of science that Craig mentioned, as well as the origin of life, the Cambrian explosion, the habitability argument, and so on.

You can be a Christian, but good Christians should not use arguments and evidence.

Good Christians should be irrational and ignorant. Bad Christians look for arguments and evidence from science and history.

Good Christians should embrace the absurd. Bad Christians want to search for truth and use logic and evidence.

Craig Hazen explains why Christianity is not like other religions

A 28-minute lecture delivered at Biola University.

Topics:

  • Christianity is different from other religions for several reasons
  • Christianity is testable using objective evidence
  • you can offer objective evidence for and against it
  • compare that to Zen Buddhism, for example, which is about subjective experiences
  • Buddhism is subjective, you can’t test it objectively
  • Christianity can be tested using the historical method
  • if Jesus did not rise from the dead, Christianity is false
  • Christianity is set up for inquiry
  • You can know whether the resurrection happened using historical methods
  • “faith” in Christianity is not belief without arguments and evidence
  • the Bible presents it’s claims about God as testable and public

This was very fun to watch.

UPDATE: Here’s a related post at the Simpson blog.

Fideism vs the Bible: blind faith vs knowledge

There are basically two views of Christianity.

The first view of faith is the Biblical view of faith as active trust in propositions we know to be true, because we have reasons and evidence to believe those propositions. This view is not only rooted in the Bible, but it extends through Augustine and Aquinas to the present day. I have written about this view of faith before, and quoted many theologians in support of it. I also showed how people in the Bible use miracles as a sign in order to convince skeptics. For example, Peter appealing to the resurrection in Acts 2. The Bible teaches that faith is active trusting based on evidence.

The second view is blind faith. This view is nowhere in the Bible, and this view asserts that becoming a Christian is a leap-of-faith in the dark against all the evidence. This view not only minimizes evidence, but it actually opposes presenting evidence to unbelievers and skeptics in the way that the Bible teaches. This view is nowhere in the Bible, and it was not the method used by Jesus or his followers. It is an unBiblical way of viewing faith, but it is very popular in some circles of Christianity. It is also popular among atheists, because this is what many Christian leaders and pastors tell them that faith is. Why would these Christian leaders reject the plain teaching of the Scripture on faith, and adopt a man-made view of evangelism that opposes the use of evidence?

Well, I have an idea why, based on my experiences trying to get apologetics into the church and university. Suppose a pastor or campus group leader wants to avoid having to learn physics and cosmology, or the minimum facts case for the resurrection, or how to respond to apparently gratuitous suffering, or the problem of religious pluralism. Suppose he thinks that Christianity, if it is about anything, is about his feeling happy and comfortable with a minimum of effort and work. So, he diligently avoids reading apologetics, because learning evidence is hard work. He avoids watching debates on God’s existence and the resurrection, because this is hard work. He avoids conversations with people who do study these things, and implies that there is something wrong with them for studying these things. He endeavors to conceal his laziness and ignorance and cowardice from his flock with much pious God-talk and fervent praise-hymn-singing.

Eventually, some member of his church asks him to go for lunch with an actual non-Christian family member. The pastor agrees and when he meets the unbelieving family member, he has nothing at all to say about typical challenges that unbelievers face. He has no knowledge of evolution, the problem of evil, the hiddenness of God, or the hallucination theory. He has never read a single atheist, and never read a single piece of evidence to refute them from Christian scholars. He lacks humility, refusing to admit that other Christian scholars may know more than he does because they have studied other areas. Needless to say, he fails to defend God’s reputation to the non-Christian. What will he say to the members of his flock about his failure? How will he justify his obstinate refusal to do what everyone else in the Bible does when confronting non-believers?

Well, consider this review of a recent book that defends the Gospels and the historicity of the resurrection by one such fideist pastor.

He writes:

There are, however, two significant shortcomings to the book.

First, Cold-Case Christianity places far too much emphasis on the role of extrabiblical sources. No doubt there is a legitimate role for biblical archaeology and extrabiblical writing from antiquity. Christianity is, after all, a faith firmly rooted in human history. But there is a grave danger when truth is suspended because of an apparent lack of corroboration from extrabiblical sources. And Wallace, I’m afraid, wanders too close to this dark side of apologetics.

All of chapter 12, for instance, is devoted to proving the Gospels have external corroborative evidence—“evidence that are independent of the Gospel documents yet verify the claims of the text” (183). Wallace then addresses the historicity of the pool of Bethesda and makes another worrying statement: “For many years, there was no evidence for such a place outside of John’s Gospel. Because Christianity makes historical claims, archaeology ought to be a tool we can use to see if these claims are, in fact, true” (201-202, emphasis added).

In other words, Wallace seems to suggest we cannot affirm the truth of the Gospel accounts without the stamp of approval from archaeology and other extrabiblical sources. Such reasoning is dangerous, not least because it cannot affirm the inerrancy of the Bible. But also, it places the final court of appeal in the realm of extrabiblical sources rather than of God’s all-sufficient, all-powerful Word.

That is a textbook definition of fideism – that belief is somehow more pious and praiseworthy the less evidence we have. And the best way to have less evidence is to study nothing at all, but to just make a leap-of-faith in the dark. Of course, a leap-of-faith can land you anywhere – Islam, Mormonism. Presumably this pastor is like the Mormons who eschew all evidence and prefer to detect the truth of Mormonism by “the burning of the bosom” which happens when people read the all-sufficient, all-powerful Book of Mormon. His view of faith is identical to theirs, and 180 degrees opposed to the Bible. He has made his leap-of-faith, and that leap-of-faith is not accountable to arguments and evidence. His faith is private and personal, based on his own feelings. He considers it blasphemous to have to demonstrate what he believes to those who disagree with him. Where is this in the Bible? It’s nowhere. But it is everywhere in anti-intellectual Christian circles.

There is a good response to this blind-faith pastor on Deeper Waters. Much less angry than my response.

Excerpt:

The dark side of apologetics? Did I somehow step into a Star Wars universe?

Yes. How horrible to show that the Bible is backed up by sources outside of it. How terrible to show that these events did not happen in a vacuum. Thankfully, no one in the Bible took this approach.

Except for the fact that when the gospel was being preached, there were no gospels per se and there were no epistles. Paul told Agrippa that the events done weren’t done in a corner. In other words, investigate the claims for yourself! The early testimony was eyewitness testimony. Sources like Tacitus and others show the eyewitnesses were right! This was not done in a corner! This was done out in the open! Archaeology helps us confirm the biblical writings and shows that unlike the pagan myths, these events were rooted in a place and time. Is there some danger that our faith will be destroyed by outside sources?

It really becomes a fideistic approach. If your worldview is true, you should have no problem putting it to the strictest scrutiny. If it is not, then you will have a problem. No Christian should fear further research into what they believe. No Christian should have a problem with extra-biblical sources. Now I do agree there is a problem with stating that EVERYTHING must be backed extra-biblically. I think this is a prejudice we too often have where nothing in the Bible can be considered historical unless it’s verified somewhere else. A gospel account alone could count as a historical claim itself that can be investigated, and indeed is in NT scholarship, but where we can get extra-biblical evidence, I’m all for it.

[…]Christianity is a faith that is rooted in evidences so we should be able to use evidences to demonstrate it. I have often been told by those of the presuppositional bent that the approach is used all the time in the Bible. The problem is I can’t find one. I get told passages like “The fear of the Lord is the beginning of wisdom.” Yes. It is. Wisdom refers to godly living. It doesn’t refer to confirming the gospel to be true. When I look at the apostles in every case, I see them pointing to evidences.

I think that Christians are much better off following the example of authentic Christian pastors like R.C. Sproul, who, in a conference on evangelism, invited Dr. Stephen C. Meyer to present multiple lines of evidence from mainstream science to establish the existence of God. The only reason not to take this approach is laziness, which leads to ignorance, which leads to cowardice. And failure. It is pastors like Pastor Bungle above who are responsible for the great falling away from Christianity that we are seeing when we look at young people. Pastors who pride themselves in refusing to connecting the Bible to the real world, with evidence and with policy analysis, are causing young people to abandon the faith.