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News

William Lane Craig posts full Vilenkin e-mail misrepresented by Krauss in their debate

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First, Dr. Craig posted the e-mail from Vilenkin to Krauss, which Krauss used in his debate with Craig, with the parts Krauss omitted in bold:

Hi Lawrence,

Any theorem is only as good as its assumptions. The BGV theorem says that if the universe is on average expanding along a given worldline, this worldline cannot be infinite to the past.

A possible loophole is that there might be an epoch of contraction prior to the expansion. Models of this sort have been discussed by Aguirre & Gratton and by Carroll & Chen. They had to assume though that the minimum of entropy was reached at the bounce and offered no mechanism to enforce this condition. It seems to me that it is essentially equivalent to a beginning.

On the other hand, Jaume Garriga and I are now exploring a picture of the multiverse where the BGV theorem may not apply. In bubbles of negative vacuum energy, expansion is followed by cocntraction, and it is usually assumed that this ends in a big crunch singularity. However, it is conceivable (and many people think likely) that singularities will be resolved in the theory of quantum gravity, so the internal collapse of the bubbles will be followed by an expansion. In this scenario, a typical worldline will go through a succession of expanding and contracting regions, and it is not at all clear that the BGV assumption (expansion on average) will be satisfied.

I suspect that the theorem can be extended to this case, maybe with some additional assumptions. But of course there is no such thing as absolute certainty in science, especially in matters like the creation of the universe. Note for example that the BGV theorem uses a classical picture of spacetime. In the regime where gravity becomes essentially quantum, we may not even know the right questions to ask.

Alex

Now recall that Krauss excuses the selective editing of the e-mail in the debate by saying that it was “too technical” to include. Judge for yourself if the omitted lines are “too technical” or whether they were omitted in order to mislead people about the evidence for the beginning of the universe.

Dr. Craig comments:

Whoa! That puts a very different face on the matter, doesn’t it? Why didn’t Krauss read the sentence, “It seems to me that it is essentially equivalent to a beginning”? Because it was too technical? Is this the transparency, honesty, and forthrightness that Krauss extols? (By the way, Vilenkin’s criticism of these models is the same one that Vilenkin makes in his Cambridge paper: far from showing an eternal past, these models actually feature a universe with a common beginning point for two arrows of time.)

And why did Krauss delete Vilenkin’s caveat that the BGV theorem can, in his estimation, be extended to cover the case of an expanding and contracting model such as Garriga and Vilenkin are exploring? And why delete the remark that such a model is usually assumed to be incorrect? It’s evident that Vilenkin’s email was selectively edited to give it the spin Krauss wanted.

Some people told me that they thought that Dr. Craig needed to be a little less gracious with Krauss in the debate, but that comment takes Krauss on directly. Too bad most of the people who watch the debate will never know unless they see the original e-mail from Vilenkin that Craig posted.

Dr. Craig then wrote to Dr. Vilenkin about this misrepresentation and here is part of the reply:

The Aguirre-Gratton model can avoide singularities by postulating a small “initial” closed universe and then allowing it to evolve in both directions of time. I put “initial” in quotation marks, because Aguirre and Gratton do not think of it that way. But this model requires that a very special condition is enforced at some moment in the history of the universe. At that moment, the universe should be very small and have very low entropy. Aguirre and Gratton do not specify a physical mechanism that could enforce such a condition.

Carroll and Chen claim that the universe did not have to be small at that special moment. But in my recent paper I show that in this case singularities are unavoidable.

[…]I think you represented what I wrote about the BGV theorem in my papers and to you personally very accurately.

Now I don’t want anyone to get the idea that all atheists are like Krauss. I distinctly remember another atheist named Anthony Flew debating Dr. Craig and a questioner from the audience asked him why not prefer speculative cosmologies like the eternally oscillating model. Dr. Flew (unlike Dr. Krauss) was honest – he said that we have to accept the science we have today based on the evidence we have today. Dr. Krauss is not willing to accept the science we have today and the evidence we have today. That’s the difference. This is a failing of Dr. Krauss’ will and intellect. He simply cannot bring himself to accept what science has shown, if it impacts his autonomy in any way. He would rather mislead himself and others with speculations rather than face reality.

Watch the whole debate – see for yourself

I’ll re-state the relevant part of my Craig-Krauss debate summary below. The summary has the full video.

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”

Krauss accused Dr. Craig of misrepresenting science many times in his three Australia debates, but now we know the truth about who misrepresented science.

UPDATE: This whole episode made me think of a lecture by famous physicist Richard Feynman.

Excerpt:

The first principle is that you must not fool yourself–and you are the easiest person to fool. So you have to be very careful about that. After you’ve not fooled yourself, it’s easy not to fool other scientists. You just have to be honest in a conventional way after that.

I would like to add something that’s not essential to the science, but something I kind of believe, which is that you should not fool the layman when you’re talking as a scientist. I am not trying to tell you what to do about cheating on your wife, or fooling your girlfriend, or something like that, when you’re not trying to be a scientist, but just trying to be an ordinary human being. We’ll leave those problems up to you and your rabbi.  I’m talking about a specific, extra type of integrity that is not lying, but bending over backwards to show how you are maybe wrong, that you ought to have when acting as a scientist. And this is our responsibility as scientists, certainly to other scientists, and I think to laymen.

Now given what Krauss did in the debate, it seems to me that he is not in agreement with Feynman.

UPDATE: Dr. Craig reports that Dr. Krauss refused to let the organizers live-stream the three Australia debates, as well as refusing to let the Australian Broadcasting Corporation live-broadcast the three debates.

Videos

Video: compilation of interruptions by Lawrence Krauss from debates with William Lane Craig

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Here is the video:

Now compare that video with this story about a professor who was denied tenure for being personally pro-ID:

Internal e-mails and other documents obtained under the Iowa Open Records Act contradict public claims by Iowa State University (ISU) that denial of tenure to astronomer Guillermo Gonzalez was unrelated to his writing on the theory of intelligent design. According to these documents:

  • Dr. Gonzalez was subjected to a secret campaign of vilification and ridicule by colleagues in the Department of Physics and Astronomy who explicitly wanted to get rid of him because of his intelligent design views, not his scholarship.
  • Dr. Gonzalez’s work and views on intelligent design were repeatedly attacked during department tenure deliberations.
  • Dr. Gonzalez’s colleagues plotted to evade the law by suppressing evidence that could be used against them in court to supply proof of a hostile work environment.
  • One of Dr. Gonzalez’s colleagues admitted to another faculty member that the Department of Physics and Astronomy had violated the principle of academic freedom “massively” when it came to Gonzalez, while other colleagues expressed qualms that their plotting against Gonzalez was unethical or dishonest.
  • Dr. Gonzalez’s department chair misled the public after the denial of tenure by insisting that “intelligent design was not a major or even a big factor in this decision”–even though he had privately told colleagues that Gonzalez’s support for intelligent design alone “disqualifies him from serving as a science educator.”
  • In voting to reject tenure for Dr. Gonzalez, members of the Department of Physics and Astronomy all but ignored recommendations made by the majority of their own outside scientific reviewers, who thought Gonzalez clearly deserved tenure.

The bottom line according to these documents is that Dr. Gonzalez’s rights to academic freedom, free speech, and a fair tenure process were trampled on by colleagues who were driven by ideological zeal when they should have made an impartial evaluation of Gonzalez’s notable accomplishments as a scientist.

I have noticed a troubling trend during the last few years as I have blogged about the secular left. It seems to me that people on the left tend to have a strong, intense intolerance for any opinions that are different from their own. And they act on this intense intolerance by aggressively attacking the free speech and religious liberty of others.

You can see examples of this in the public schools and especially in the universities. Students being denied degrees, students being charged with offensive speech, students having secular leftist propaganda rammed down their throats, professors being prevented from teaching anything critical of the secular left, professors being denied tenure, and so on. It’s not a surprise either when you think that authoritarian regimes are typically atheistic, like in North Korea, Cambodia, the Soviet Union, etc. North Korea would be a paradise for an atheist like Lawrence Krauss. If anyone said anything about Jesus or even owned a Bible, then he could just have them killed. It’s less work than interrupting us, and more permanent.

I’m not saying that every atheist is like Krauss, but there does seem to be this tendency to silence, coerce and intimidate anyone who says anything that disagrees with atheism. Especially in the rank and file of the atheist movement. The whole atheist political effort (e.g. – Freedom from Religion Foundation, etc.) seems to be about forcing Christians to act like atheists in public, so that atheists don’t have to be offended by hearing views that disagree with their own views. They want to silence Christians by using the coercive power of big government. You can see it in debates, you can see it in the universities, and you can see it in the courtroom. They’re not trying to win arguments with evidence, they’re trying to end the argument with threats and coercion.

You can see a video and summary of the third Craig-Krauss debate from Australia here.

You can read a statement of how militant atheists view Christians here. (Warning: reader discretion is advised)

News

Conservative Christian Tony Abbott wins majority in Australia

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Tony Abbott, future Prime Minister of Australia
Tony Abbott, future Prime Minister of Australia

Timothy Stanley of the UK Telegraph reports that Australia has elected a Stephen Harper of their own.

Excerpt:

Tony Abbott has won the Australian election – a blow not only to the Australian Labor Party but to Left-wingers everywhere who presumed that he was too “Neanderthal” to win. Well, us Neanderthals will be having a barbie tonight and sculling some beers to celebrate. “Good on yer, mate!”

Abbott won for two reasons. First, the Australian Labor Party is going through a long-term identity crisis. The ALP was once the party of the working man (and Sheila) but in recent years it’s succumbed to the worst aspects of factional politics, becoming a magnet for liberal pressure groups desperate for their slice of the taxpayers’ pie. The party contained plenty of factions in the past but it always managed to steer a sensible middle course between them – so while it was the ALP in the 1970s that established Australia as an outward-looking, Pacific power it was also the ALP in the 1980s that recognised the need for economic reform and rejected protectionism. It’s the party of both Gough Whitlam and Les Patterson.

However, in recent years the Left gained an ascendance over the Right that undid that delicate balance. Under Gillard and Rudd, the ALP “bought” off Australia’s metropolitan elites by embracing issues like gay marriage and the green agenda – the latter threatening the livelihoods of ordinary Australians trying to drill, mine and log their way through the global recession. It invested in silly, expensive projects that turned into giveaways to client companies and unions. And it displayed all of its internal bickering in public, reducing national politics to student union shenanigans. The ALP is now severed from the base that it once represented so well, leaving the ordinary blokes and blokesses looking around for something new.

[…]On the quiet, Abbott has picked up some of the politics that the ALP abandoned. He is said to be a devotee of BA Santamaria, the Catholic thinker who tried to build a Christian Democratic movement that combined social justice and social conservatism. Abbott’s conservatism is plain to see: he rejects doctrinaire environmentalism and favours a far freer and competitive market than the ALP’s clients would ever tolerate. But he also has Santamaria’s concern for social justice: Abbott wants to introduce a scheme that would pay for parental leave to encourage mothers and fathers not only to spend more time with their children but to have more of them, too. Dig beneath that hard man image and you’ll find a politician who is considerably softer and complex. Whereas some Western conservatives seem to be entirely motivated by the desire to win (Romney, Cameron), Abbott has a philosophy and – almost unique in our materialist age – a theology.

This puts him in the George W Bush, Stephen Harper compassionate conservative tradition – the tradition that tends to attract the most votes. For while British Tories might look at Abbott’s politics and language and sneer, they would do well to remember this important distinction. Tony Abbott wins elections; David Cameron has yet to do even that.

Congratulations, Conservative Coalition!

My previous post on Tony Abbott is here, if you want to know more about his policies.