Antivaccine nonsense Medicine Skepticism/critical thinking

Byram Bridle is upset at Timothy Caulfield because he “won’t debate” antivaxxers

After Neil deGrasse Tyson made the mistake of debating Del Bigtree, antivaxxer Byram Bridle tries to shame Tim Caulfield into debating him, calling his refusal “disinformation.” Project much?

It seems as though Neil deGrasse Tyson‘s massive error in agreeing to debate antivax propagandist Del Bigtree on his home ground (namely his The Highwire podcast) is the blogging gift that keeps giving, both from people defending his decision but, far more, from antivaxxers who approve of it and use it as a cudgel to attack skeptics and science communicators like me (i.e., the ones who refuse to debate cranks and science deniers on general principles). One such science communicator is Timothy Caulfield, a professor of law at the University of Alberta and the research director of its Health Law Institute, and one such science denying antivaxxer upset at such science communicators is Dr. Byram Bridle, who dropped an article on his Substack yesterday entitled We Need to Follow the Science of Our ‘Misinformation’ ‘Experts’. In it, Dr. Bridle, in an act of projection typical of cranks like him, accuses Caulfield of “misinformation” and not “following the science,” because of course he does.

First off, I must note that I almost forgot who Dr. Bridle was. He has been mentioned on this blog a couple of times, but there is only one post from 2021 in which he and the misinformation he was promoting were the main topics. In brief, he’s an associate professor and viral immunologist in the Department of Pathobiology in the Ontario Veterinary College at the University of Guelph, and, from my perspective, his “contribution” to COVID-19 misinformation was the misuse of a Japanese biodistribution study of the lipid nanoparticle-based COVID-19 mRNA vaccines. The study was a rodent study that examined where intravenously injected lipid nanoparticles with a radioactive tag ended up and led to antivaxxers fixating on the observation that radioactivity was detected in the ovaries and using that accumulation to claim that the vaccines will make our girls and womenfolk sterile. (Left out were the facts that this was a rodent study that used a very large dose of lipid nanoparticles—many times larger than that of the actual vaccine—in order to observe all the organs to which they might end up.) Basically, Dr. Bridle was one of the first antivaxxers to resurrect the old “vaccines cause infertility” trope for COVID-19 vaccines. In fairness, the myth first came up in December 2020, a mere week after the Pfizer vaccine started rolling out of its factories, making Dr. Bridle’s spin on this old antivax chestnut just that, another spin.

Dr. Bridle is also known for spreading other forms of antivaccine misinformation, such as:

Bridle began a Canadian talk show interview with a dramatic warning: “I’ll forewarn you and your listeners that the story I’m about to tell is a bit of a scary one.” 

Describing himself as “very much pro-vaccine,” Bridle said he had assembled scientific information that he intends to make public, but “your listeners are going to be the first to hear the public release of this conclusion.” 

He claimed the information shows that the spike protein produced by the vaccines, which is intended to prevent the coronavirus from infecting the body, does not remain in the shoulder muscle but gets into the blood — and can lead to clotting, bleeding, heart problems and neurological damage.  

“In short, the conclusion is, we made a big mistake,” Bridle said. “We didn’t realize it until now. We thought the spike protein was a great target antigen. We never knew the spike protein itself was a toxin, and was a pathogenic protein. So, by vaccinating people, we are inadvertently inoculating them with a toxin. Some people, this gets into circulation, and when that happens in some people, they can cause damage, especially in the cardiovascular system. And I have many other legitimate questions about the long-term safety, therefore, of this vaccine.”

So that’s a two-fer in that not only did Dr. Bridle spread the misleading claim that the vaccines accumulate in the ovaries and the false claim that they cause female infertility, but he also spread the antivax trope that spike protein from vaccines is so toxic that it is causing all sorts of horrible complications and injuries. It’s no surprise that Prof. Caulfield would view him as a crank, not to be debated. I share this opinion with Caulfield, who is usually correct about these judgments.

This brings us to Dr. Bridle’s lament about “debate” and how it is so very, very wrong that Prof. Caulfield won’t debate him and, more generally, that most science communicators like myself consider it a bad idea to debate cranks and science deniers. First, he starts out by buttering up the scientific community with unctuous flattery by comparing the refusal of his critics to “debate” him with what he considers the ideal in science:

Over the past three years not one person who has accused me of disseminating mis/dis-information related to COVID-19 has ever offered me the courtesy of a conversation prior to doing so. Not one. That would be the respectful thing to do. It would be the professional thing to do. Historically, it has been a pillar of scientific ethics; to be willing to have open discussions with people that have differing viewpoints. Nor have any of these people been willing to discuss the scientific rationales underpinning my messages, even after they have publicly defamed me. Not a single person.

Nothing can help resolve disagreements or facilitate the ‘agree to disagree’ principle like a real-time conversation. Our own justice system would say that it is not acceptable to accuse another person in the absence of: 1. transparently presented evidence to back it up and, more importantly, 2. an opportunity for the accused to defend themselves.

I’ve noted on a number of occasions how often science deniers like to invoke legalistic, rather than scientific, arguments; one example is their love of inappropriately repurposing the legal principle of falsus in uno, falsus in omnibus to scientific arguments. This is more of the same thing. Science communication is not the courtroom, and Dr. Bridle is not entitled to a face-to-face debate with those who criticize him for spreading pseudoscience, conspiracy theories, and misinformation about COVID-19 and COVID-19 vaccines. Moreover, it’s not as though Dr. Bridle is being “silenced.” He has large social media platforms and has appeared on a number of traditional media outlets, such as TV and radio. He’s perfectly free to defend himself there—and does. Like most antivaxxers, he craves having his views taken seriously by real scientists and science communicators, which leads him to continue:

I have tried to engage those who accuse me of disseminating mis/dis-information countless times. Many other people have tried to facilitate these conversations on my behalf. The universal response is that a public discussion of COVID-19 science with a so-called ‘science denier’ like myself would cause harm; specifically, it would provide a platform that could risk further spreading mis/dis-information.

That is, of course, my reason in a nutshell for not engaging in debates with antivaxxers, quacks, and science deniers. Such “debates” are not scientific debates, but rather exercises in science-denying propaganda. It isn’t necessarily the debater with the strongest scientific evidence who will be perceived as “winning.” Rather, it’s the one with the best rhetorical skills. This makes such pseudodebates a win-win proposition for a quack like Bridle. Even if they lose, they win just by appearing on the same stage or in the same studio at the same table as a respected expert like Prof. Caulfield, because they will have succeeded at presenting their views as roughly on the same plane as science and therefore worthy of “scientific debate.” Worse, if they manage to use the usual techniques of cherry picking data and Gish galloping to give the appearance of having won, they can use the “debate” as even more effective antiscience propaganda.

Then, when such invitations to “debate” are refused, antivaxxers and cranks inevitably don the mantle of the oh-so-hurt, oh-so-disappointed warrior for truth who has been wronged, as Abir Ballan did after Prof. Caulfield blocked him on Twitter after Ballan had offered to arrange a “discussion” or “debate” between Caulfield and Bridle (which Bridle was a bit too thirsty about wanting). A week later, Bridle was ranting, while invoking more legalistic arguments:

From this context, I was surprised to learn that he does not appear to hold a PhD in a health-related field, nor even a MD (an undergraduate professional degree conferred after completion of a program that provides relatively superficial overviews of medical science disciplines, generally with an under-emphasis of teaching in immunology and virology). Immediately, this is a red flag for someone claiming to be an expert in separating truth from fiction across all disciplines underpinning health science. From my experience serving as an expert witness in courts and seeing many recent judgments, it seems like many judges would not be impressed with this lack of credentials up front.

As you might imagine, I can’t resist pointing out that I have an MD and a PhD; so maybe Dr. Bridle will take my opinion that he is an antivax crank a little more seriously than he does Prof. Caulfield’s. (Probably not.) Also note Dr. Bridle’s appeal to the legal system again, in which he observes that a court might not view Prof. Caulfield as an expert witness because he doesn’t have an advanced degree in medicine or a relevant science. That’s probably true if the question were to be whether Prof. Caulfield is an expert in medicine or a biomedical science. However, the question of whether he is an expert in medical misinformation and disinformation is a different question entirely, and Prof. Caulfield clearly is an expert in this field. It’s also a hilarious thing for Dr. Bridle to have written given that a court published. an opinion that explicitly stated that Dr. Bridle is not an expert on COVID-19 vaccines. The fun stuff starts at [238], but here’s a sampling:

[238] The court accepts that Dr. Bridle is an immunologist and vaccinologist by training and that he has expert knowledge in these fields, in particular regarding the theory and science behind vaccines. However, for the reasons below, the court does not accept that Dr. Bridle is qualified to give opinion evidence with respect to the safety and efficacy of the Covid-19 vaccine for children.
[239] Dr. Bridle is a researcher only. He is a faculty member at the Veterinary College at the University of Guelph’s Department of Pathobiology, where he conducts research on animals.
[240] Dr. Bridle acknowledged that he is not a medical doctor. He has never vaccinated a child, he has never treated a child or an adult suffering from a reaction to a vaccine, nor has he ever treated a child or an adult who is suffering from an infectious disease.
[241] Dr. Bridle agreed that he did not have any experience or involvement in the clinical trials of a Covid vaccine. He agreed that this is when the medical doctors become involved.
[242] Dr. Bridle’s acknowledged that his knowledge of the Covid vaccine is limited to his understanding of the science regarding how the vaccine works and how it should work, and his interpretation of the government data of the human experience of the vaccine.
[243] Dr. Bridle acknowledged that there were limitations on the data that he has seen and studied at the time of trial, including how the data had been presented. He acknowledged that there is no evidence of long-term risks, which are currently largely unknown. However, he points out that this is because there has not been sufficient clinical testing.
[244] Dr. Bridle has no real-world experience on how human beings are actually experiencing Covid-19, and reacting to the Covid vaccine, in contrast to Dr. Sharkawy.
[245] Dr. Bridle is not qualified to give opinion evidence on the risk and treatment of vaccine-induced myocarditis. He does not have the medical knowledge to do so. Dr. Sharkawy also testified on this issue and strongly refuted Dr. Bridle’s claims. The court prefers Dr. Sharkawy’s evidence, which is based on his direct experience in treating patients on the Covid ward at his hospital throughout the pandemic.

There’s your “expert”!

This brings us to the point where Dr. Bridle pivots to whining about Timothy Caulfield:

A great example of this is Canada’s eminent leader in the field of ‘misinformation’ ‘science’, Prof. Timothy Caulfield at the University of Alberta, who recently received the prestigious Order of Canada for his efforts in rooting out misinformation about COVID-19. He has consistently refused to engage in discussions with experts that he has deemed to be spreaders of ‘misinformation’. This has included me. I learned from members of the public that Mr. Caulfield and his publicly funded group of ‘misinformation’ ‘experts’ within ScienceUpFirst have been defaming me for a very long time. This surprised me because most of these people don’t know me (I certainly didn’t know them) and they never talked to me. Some have openly accused me of spreading disinformation, which implies ill-intent. But how can they know my intents when they don’t even know me on a personal level.

Since learning of this, I have invited Mr. Caulfield to have public chats about the science that he is accusing me of misunderstanding. After all, if public accusations are being made, it only seems fair to prove their validity in a public setting or resolve it publicly so some of the wrongful and massive harm can be undone. Private resolution of public harm doesn’t cut it.

“Experts.” Dr. Bridle keeps using that word. I do not think it means what he think it means, particularly if he means to include himself as an “expert.”

H0w many times have I been on the receiving end of this sort of appeal, and I can even see how powerful it is given that it appeals to a universally valued human trait, fairness. However, notice the rhetorical trick. Dr. Bridle can only have been “defamed” if it is not true that he is a conspiracy theorist, crank, and science denier spreading (at least) misinformation about COVID-19. His analogy fails even on its own legalistic terms because the truth is an absolute defense against an accusation of defamation. Indeed, at the risk of his doing just that and thus getting Prof. Caulfield annoyed at me, I’d suggest that, if Dr. Bridle really thinks he has been defamed, libeled, or whatever, he has the Canadian courts to hold Prof. Caulfield accountable. I realize that proving defamation in the US is very, very difficult given the First Amendment, Canada’s defamation law is a lot more plaintiff-friendly; Dr. Bridle would have a lot better chance of proving his case. Yet he doesn’t. I wonder why.

In any event, here is the article that bugged Dr. Bridle. In it, Prof. Caulfield makes a lot of the same points that I routinely make, although I like this one, which I hadn’t thought of:

Yet the University of Alberta scholar avoids mano-a-mano bouts because he considers the “debate-me” tactic a growing and dangerous distraction that can degenerate into an attack on individuals.

Indeed. Even when this tactic doesn’t degenerate into attacks on individuals, it is still a distraction, and intentionally so, because it allows cranks to play the victim. For example, look at what Dr. Bridle did after he was on that Canadian talk show:

PolitiFact emailed Bridle on June 3 asking for the evidence to back his statement, and received an automated reply from him. The reply said that the radio interview led to “vicious attacks,” including a website that emerged May 28 bearing his name. Bridle’s email said that he believes the website — which anonymously critiques Bridle’s claims — to be libeling him.

Dr. Bridle should try countering misinformation of the sort that he spreads if he really wants to see “vicious attacks.”

Dr. Bridle is also upset that Prof. Caulfield cited this 2019 study—before the pandemic!—on techniques to combat misinformation during a talk that he gave. I like the review article, one of whose conclusions is that the backfire effect, namely the idea that directly refuting misinformation serves to reinforce it, has pretty shaky evidence backing it up. Another conclusion is that refuting pseudoscience in public forums or debates doesn’t cause harm, while refusing to debate leads to negative perceptions. Unsurprisingly, Dr. Bridle extrapolated from these conclusions that by not debating him Dr. Caulfield is not following the science.

I also note that the authors did include one major caveat:

We acknowledge that in some situations contextual factors may still force the advocate to avoid participation (for example, the format of the discussion is not serious or personal safety is at risk31). However, with regard to the effectiveness of messages in conventional contexts, not turning up at the discussion at all seems to result in the worst effect. There may be one exception to this: if the advocate’s refusal to take part in a debate about scientific facts leads to its cancellation, this outcome should be preferred21,51 so as to avoid a negative impact on the audience.

I’m not entirely persuaded by this study, because, being academic and very much done in well-controlled experimental setups, I question whether it takes into account how these debates are used by antivaxxers. Sure, the findings might be correct that showing up and refuting misinformation in a debate format at worst likely doesn’t cause harm and might even persuade viewers or listeners, but it isn’t just those present at the debate that we have to worry about. That’s a huge reason why I was so disturbed when Neil deGrasse Tyson lent his prestige and fame, which are massively greater than that of Del Bigtree, to Bigtree’s podcast. I would also note that deGrasse Tyson went counter to some of the findings of this article in that he was clearly unprepared for the specific tropes likely to be used by Bigtree. Finally, this is just a single study; it might or might not be generally applicable, especially given that it was conducted prepandemic and pre-infodemic.

More obviously, though, Dr. Bridle takes his rhetoric well beyond what is supported by the study cited by Prof. Caulfield and seized upon by him when he tries to generalize what he views as the obligation of someone like Caulfield to debate someone like him into a general principle:

The golden rule for the new ‘science’ of ‘misinformation’:

“No person shall accuse another to have disseminated misinformation until a public, respectful, moderated debate has definitively proven that the accused is wrong.” Byram W. Bridle

And its corollary:

“No person can legitimately be accused of disseminating misinformation if the accuser is unwilling to debate them in public.” Byram W. Bridle

No, no, no, no, no. Nothing in the article cited as the “science of disinformation” supports or demands such a principle and corollary. These are just convenient ideas that Bridle came up with to convince people that Prof. Caulfield has treated him so very, very unfairly and that he isn’t actually a misinformation spreader. (He is.)

Nor does the study support this:

Now, knowing their science, I only see two ways that the ‘misinformation’ ‘experts’ who have been publicly labeling people like me as spreaders of mis/dis-information can save face:
  1. Put up! This means, step up to the table, follow your own science, bring your original data and let’s talk.
  2. Shut up! But, only after publicly acknowledging that you were wrong.
I predict that many of my accusers will choose a third option, which should, by all rights, cause the public to lose faith in them: continue to disallow those they are accusing the courtesy of a public discussion. An inconvenient truth is that real-time conversations are the best way to establish expertise. In a public setting, a discussion between equally yoked experts will quickly turn into an incredibly productive sharing of information that helps hone the science and results in everybody learning something, including the experts. However, if unevenly yoked, the lesser expert will rapidly be exposed in such an exchange. Is the latter possibility the real reason why so many ‘misinformation’ ‘experts’ are failing to ‘walk the walk’ that their own scientific data promotes?

Nothing in the article supports Dr. Bridle’s conclusions that “real-time conversations are the best way to establish expertise” (they most definitely are not—surely Dr. Bridle must know that many experts are not glib and don’t do well in public forums even though they are definitely experts); that in a public setting a discussion between “equally yoked experts will quickly turn into an incredibly productive sharing of information that helps hone the science and results in everybody learning something” (it might, or might not); or especially that “the lesser expert will rapidly be exposed in such an exchange.” Dr. Bridle mistakes glibness and rhetorical skills for expertise. Again, I have encountered many true experts, giants in their fields, over my decades in academic surgery and cancer research who would probably not fair well against someone like Dr. Bridle, if only because they have humility about their knowledge and conclusions and, more relevant to the question of these staged “debates,” are not slick at public speaking. In the passage above, Dr. Bridle inadvertently demonstrates that it really is rhetoric that he values, not scientific expertise.

It’s also why the conclusion of Dr. Bridle’s article amuses me. Can you guess what he does before reading the end? Of course you probably can! He challenges Prof. Caulfield to a debate again. He tries to shame him into debating, a favorite tactic of cranks. Truly, he is a one-trick pony.

By Orac

Orac is the nom de blog of a humble surgeon/scientist who has an ego just big enough to delude himself that someone, somewhere might actually give a rodent's posterior about his copious verbal meanderings, but just barely small enough to admit to himself that few probably will. That surgeon is otherwise known as David Gorski.

That this particular surgeon has chosen his nom de blog based on a rather cranky and arrogant computer shaped like a clear box of blinking lights that he originally encountered when he became a fan of a 35 year old British SF television show whose special effects were renowned for their BBC/Doctor Who-style low budget look, but whose stories nonetheless resulted in some of the best, most innovative science fiction ever televised, should tell you nearly all that you need to know about Orac. (That, and the length of the preceding sentence.)

DISCLAIMER:: The various written meanderings here are the opinions of Orac and Orac alone, written on his own time. They should never be construed as representing the opinions of any other person or entity, especially Orac's cancer center, department of surgery, medical school, or university. Also note that Orac is nonpartisan; he is more than willing to criticize the statements of anyone, regardless of of political leanings, if that anyone advocates pseudoscience or quackery. Finally, medical commentary is not to be construed in any way as medical advice.

To contact Orac: [email protected]

32 replies on “Byram Bridle is upset at Timothy Caulfield because he “won’t debate” antivaxxers”

To me, falsus in uno, falsus in omnibus has always been more metaphorical than literal. I interpret it as meaning that if someone has been caught in a lie or distortion about something, everything they say on that subject is suspect.

I think it may be a corollary to their general lack of understanding of the scientific method that leads them into legalistic thinking. And there is a legal principle that if you don’t perform each step in obtaining evidence in accordance with the law, all evidence you obtain from that source (like a search) has to be dismissed.

At least it seems that may be why they are continually going back to relatively minor preliminaries (like the Pfizer whistleblower claim) or calling for longer and more complete trials in new groups like younger children to discredit the approval of the vaccines. At the same time they ignore the huge safety record that has been accumulated since they went into use,

Just like Orac, I find it odd that Dr Bridle wants to debate Covid vaccines with Dr Caulfield, but for a different reason.

Dr. Bridle is a viral immunologist, an expert in vaccinology and virology, and an author of dozens of related scientific studies.

Dr. Caulfield is a professor of law, with zero education pertaining to virology or vaccinology. His level of expertise in vaccines, virology and vaccinology is on par with my own. In other words, he is an amateur to the field of vaccines and viruses.

What Dr Caulfield seems to be good at is collecting grant money propagandizing Covid vaccines, without deep and professional understanding of the related biology. Caulfield is also a “disinformation expert” who is good at making social networks silence opponents and promote the narrative he is paid to promote.

If so, what will these two individuals discuss at any sort of a “debate”?

There is no point in debating vaccinology and virology when the debate is between a vaccinology professor and a law professor.

It is like a debate between a plumber and a pig: a plumber debating plumbing with a pig will not get the pig to understand anything. If they have a mud wrestling debate, the pig will win and will even enjoy it.

I see little point in live debates. My only form of debate is posting long pieces that I thought up to the best of my ability.

I would never go to any sort of a live debate.


blockquote>My only form of debate is posting long pieces that I thought up to the best of my ability.

Thinking up posts explains why your comments never have a smidge of validity: you think you know what you’re talking about, and since nothing in the published reliable research supports what you believe, you intentionally lie and make things up [as you’re afraid of losing support on your disinformation based substack].

All of the crap you post supports what has long been obvious: you paid for a degree but never learned how to study.

What if there was a more emotionally mature way to address those you disagree with…

Another irony meter bites the dust.

Emotionally mature? Sorry john, nothing you or igor say about covid or the vaccines deserves any reserved comment: it’s all bullshit — either straight up lies or grossly misrepresented summaries of data.

Want respect? Start being an honest broker.

When I was doing my undergraduate degree, my dad was adamant that conservation of angular momentum was an optical illusion. Pointing out that he had no idea what he was talking about isn’t “emotionally immature”, but I suppose that accusation has some some saving grace for individuals that are unwilling to confront their own ignorance.

Actually Timohy Cauldfied is Professor of Faculty of Law and School of Public Health, University of Alberta. You forget tha public health part. Bridle is not an exper of viral vacines eit

Why on earth do these people pretend that public discussion only occurs when the parties get up on a debate stage? Surely Bridle knows that by publishing a piece on Substack (or in any Internet forum) he’s disseminating his views, and whoever cares to agree or disagree and responds in a similar manner is engaging in a public discussion. One reason Caulfield may not be interested in a “debate” (beyond the downsides that Orac has mentioned) is that Bridle is too obscure a character to bother with. Tyson at least consented to appear with Del Bigtree, who’s sort of a big fish in the polluted antivax pond. Bridle is scarcely a tiny minnow by comparison.

And another thing: if you accuse someone of defaming you and they haven’t, is that actionable? You can get in trouble for falsely accusing someone of a crime; maybe an attorney can weigh in on if a false accusation of a tort is itself a tort.


blockquote>… by publishing a piece on Substack (or in any Internet forum) he’s disseminating his views, and whoever cares to agree or disagree and responds in a similar manner is engaging in a public discussion.


Exactly. And such an exchange of (hopefully) well-researched, thought-over insights and data with great attention to detail in fact reflects how proper scientific debate should go (although of course Substack is not the ideal environment). NOT just one or two hours of verbal altercations in a contest where the ‘winner’ is the one who can come across as most convincing or (increasingly, alas) most entertaining.

It is not for nothing that properly conducted peer review of even a simple paper takes lots of time and attention.

Even the terrible side of academic debate, where senior professors snipe at each other during department meetings over the interpretation of a minor difference in experimental outcome, isn’t done for the lay public! (I would say it’s not done for an audience, but it’s absolutely a form of dominance display between labs and requires an audience of underlings.) Those are internal debates between people who already know the subject material and are refining the cutting edge.

I’m sure all fields are subject to this nonsense, but I have to feel that medicine and biology get it more than say, advanced mathematics or astrophysics.

Here’s the mental image I get when I see these “debate me!” folks: fence lizards. Specifically male western fence lizards. These lizards have blue scales on their undersides (hence the colloquial name “blue bellies”) that they show off as part of mating displays, in the form of doing pushups. Each lizard wants to show off his blue scales to show that he’s the most fit in the area and you need to leave. But, they’re lizards and not very bright, so they do this to any blue thing that comes into view. Including the blue jeans of a researcher who is 1) 50 times their size, 2) a mammal, and 3) possibly there to collect said lizards.

Like, lizard dude, you’re the size of my hand, I’m not impressed by your pushups.

Gosh, our senior department meetings are practically love-fests — we’re not working on the same things, so we’re not debating science, and when we do talk science we respect each other’s skills and competence (which are, objectively, awesome).

I think the worst examples of this I still see go on in the medical record (yes doctors are still that petty in 2023.)

Hospital tumor boards (where physicians who take part in cancer diagnosis and treatment interact to discuss cases) can be a fount of sniping and interdisciplinary one-upmanship. Those who think that docs march in lockstep on the subject should find a way to sit in on those meetings. Their eyes would be opened.

#Dangerous Bacon

They are both Canadian and Canada is just no where near as litigious as our friends to the South.

Yes we see the occasional SLAP suit and a few who talk about suing anyone who disagrees with them, but I doubt Caulfield even thought about suing him when accused of defamation, mostly cos its probably far beneath him to even acknowledge.

I suspect this is far from the first time Caufield has been challenged by some crank to ‘debate me bro’ and won’t be the last.

Lawsuits by aggrieved scientists are nothing new in Canada. Climatologist Andrew Weaver sued the National Post over a series of articles attacking his work. Not everyone was pleased.

““Libel law in Canada is often seen as the most regressive in the English speaking world today,” Bill Kovarik, professor of communication at Radford University and a 2009 media fellow at the University of Western Ontario, told The Yale Forum. “A case like this, based only on political criticism, would likely be dismissed on a motion for summary judgment in the U.S. In Canada, the burden of proof is on the defendant, not the plaintiff, so the National Post (one of the most conservative papers in Canada) is going to have to prove their claims are either true or fair comment, and this will be difficult in the Canadian system.”

Weaver won his lawsuit.

A similar suit filed in the U.S. by climate expert Michael Mann against the National Review and Competitive Enterprise Institute failed, though from what I can tell there may still be surviving legal action in that case against a couple of individuals.

oh, I’m not saying it never happens, but its a lot less litigious here.

Canada being the worst in the English speaking world is interesting as I was always lead to believe the UK’s liable laws were the worst, its why so many choose to sure for liable there over, say the US where they have a first amendment. Though I admit I’m basing that mostly on reports rather than direct knowledge.

Oh, and at the risk of getting Orac sued, Doesn’t Byram Bridle sound like a comic book villain name? Probably for a character called “The Horse Master”.

Caveat: I do have to ‘push back’ on the idea that if a representative of “scientific consensus” merely appears in any debate forum with a contrarian like Bridle, that’s an automatic win for the bad guys, a legitimation they don’t deserve. That depends. As a tenured professor in a relevant field at a legit university, Bridle is already legitimated. If contrarians aren’t worthy of being engaged in live debate, they’re not worthy of the attention they get from a debunking at RI, either. In truth, any engagement in print or in person has potential downsides as well as potential benefits…

OTOH, Orac’s more specific critiques of live debate are very well taken. Yes, that puts too much weight on rhetorical skills that may or may not be relevant the validity of the proposition. After all, that’s the whole premise of forensics competition: debaters are supposed to be able to win by constructing a superior argument for either the affirmative or the negative. And debate competition judges will likely put more weight on the logos aspect than a general audience.

I was struck by a little rhetorical trick Bridle employed in his complaint, as revealed in the passages Orac quoted. He starts with a very reasonable appeal to a value his audience is likely to share: ‘Not one person who has accused me of disseminating mis/dis-information has offered me the courtesy of a conversation prior to doing so.That would be the respectful, professional thing to do.’ Well yeah, I agree… But a person-to-person conversation could be productive precisely because the participants are only addressing each other, not trying to win over people listening in. IOW those values Bridle starts with do not apply (at least not anywhere equally) to live public debate. But he sneakily slips into that connection in a way you might not notice, especially live in the moment.

FWIW, Del used a similar framing trick with NDT, “hey let’s just have a collegial chat, and then we’ll go out for a brewski.” Nope, you’re going to be playing to the audience, so don’t pretend otherwise.

A bit of wisdom from the arts: a key concept in theater is a “French scene” the bounds of which are defined by the entrance or exit of a character. E.g. if two characters are having a dialog, that scene ends if someone else comes into the room, even if that character doesn’t speak and the first two characters continue their exchange, because their motivations and expression will be altered and have a different meaning because they know someone is listening…

This is an excellent point. I should’ve noticed that rhetorical bait-and-switch used by Bridle and Bigtree. In fact, it’s often used by cranks demanding debate!

Del is always playing to an audience.
@ highway talk today he includes a video of his “preaching” to legislators to secure a religious exemption in Mississippi a few years ago. ( that they finally got now thanks to Aaron Siri ) He notes that his father is a preacher. He tried to be an actor and singer.
If he didn’t become an anti-vaxxer he probably would be ranting on street corners or philosophising on a bar stools. He’s a performer first and foremost.

This passage struck me:

“I learned from members of the public that Mr. Caulfield and his publicly funded group of ‘misinformation’ ‘experts’ within ScienceUpFirst have been defaming me for a very long time. This surprised me because most of these people don’t know me (I certainly didn’t know them) and they never talked to me. Some have openly accused me of spreading disinformation, which implies ill-intent. But how can they know my intents when they don’t even know me on a personal level.”

[Continued – submitted by mistake.]

These are remakable non-sequiters. First, you don’t have to know someone personally to defame them (leaving aside whether he’s actually being defamed, which is very doubtful.)

Second, since when does spreadding disinformation “impl[y] ill-intent”? It just — doesn’t. Inventing disinformation likely does imply ill-intent — it’s basically lying — but someone who sincerely believes a lie they have been told and passes it on can have the best of intent.

Scrambled logic — he has to have it be all about him, and his narrative of unfair treatment.

You notice that Bridle seems to admit that he does spread misinformation, but without ill intent.

@ Igor Chudov

You write: “Dr. Caulfield is a professor of law, with zero education pertaining to virology or vaccinology. His level of expertise in vaccines, virology and vaccinology is on par with my own. In other words, he is an amateur to the field of vaccines and viruses.”

So, why don’t you follow your own advice, that is, “zero education pertaining to virology or vaccinology”, and stop posting stupidly ignorant biased unscientific antivax comments???

You write: “Dr. Bridle is a viral immunologist, an expert in vaccinology and virology, and an author of dozens of related scientific studies.”

Yep; but an overwhelming majority of scientists with similar credentials support vaccines; but, given your ignorance, of course, you prefer Bridle. As I wrote in previous exchanges, even people who contributed to science for some reason adopted unscientific viewpoints; e.g., Linus Pauling on mass doses of vitamin C, Suzanne Humphries, respected kidney specialist, to homeopathy and antivaxxer, Luc Montagnier. co-discoverer of HIV, then claimed didn’t cause AIDS and promoted homeopathy. You don’t have even the minimum basics to decide who is right; but I do and Orac does and as I’ve shown over and over, you misread papers, find a few that go against overwhelming science and/or project ideas into papers that are not even there. So, follow your advice above! ! !

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