Saturday, July 24, 2021

Tucker Carlson Used a Textbook Fallacy to Question the Coronavirus Vaccines

Coronavirus, CDC image
In a recent commentary, Tucker Carlson said: “To say it in unison – and they’re all saying it – that this is a pandemic of the unvaccinated is simply untrue, that’s a lie.” Strong words! However, public health authorities’ point is that the vaccines are highly effective. Carlson’s rebuttal was that the vaccines are not completely effective. Carlson’s point is a classic example of the false dilemma fallacy. That is, Carlson implied that the vaccine is either effective or it is not – all or nothing. That is a fallacy because no vaccine works all the time.

People commit the false dilemma fallacy when they tell us that we only have two choices when, in fact, we have many. A vaccine might be perfect. A vaccine might be imperfect. Those are not, however, the only two choices. As Kathy Katella of Yale Medicine points out, the current vaccines used in the United States are 86%-98% effective in preventing severe coronavirus infections. Although that is an excellent result, it’s not perfect.  In Texas, for example, 99.5% of coronavirus deaths were among persons who were not vaccinated. Similarly, North Carolina health officials report that 94% of new coronavirus cases are among unvaccinated patients.

Still, if a tiny percentage of the serious illnesses occur among vaccinated people, does that prove that the vaccines do not work? Or does it merely prove that they are slightly imperfect?


To perpetuate his false dilemma fallacy, Carlson first cited British public health authority Sir Patrick Vallance, who said that 40% of British coronavirus hospital patients have been fully vaccinated. Carlson’s conclusion: “it makes you wonder how effective are these drugs anyway.”

Carlson contrasted this figure against what he said were promises made by American officials: “In the U.S., they’re telling us that no one who’s been fully vaccinated is fine. The only people getting dangerously sick or dying from COVID are the people who refused to get the vaccine.” In part, of course, Carlson was working with ambiguous or overstated comments by American officials, such as President Joe Biden’s comment that “The only pandemic we have is among the unvaccinated and they’re killing people.” (Biden could, of course, have phrased his point more precisely.)

Did you notice Carlson’s rhetorical trick? “They’re telling us that no one who’s been fully vaccinated is fine.” I assume he meant to say “everyone,” not “no one.” In either case, “everyone” and “no one” are absolutes. The false dilemma fallacy requires us to think in absolutes, in all-or-nothing terms. Carlson was leading his audience astray, for public health doesn’t deal in absolutes.

Carlson next slipped in one additional step: he sarcastically said that we are being told that “the only people getting sick are the ones who for political reasons have refused to get the vaccines. How many times have you heard that in the past month? As they continue to politicize medicine – almost at an irrecoverable point.” Again, notice the trick: “the only people.” Not most people, not almost everyone, but the only people. Another absolute.

Carlson's next target was CDC Director Rochelle Walensky, who said that “This is becoming a pandemic of the unvaccinated. We are seeing outbreaks of cases in parts of the country that have low vaccination coverage because unvaccinated people are at risk.” She continued that: “communities that are fully vaccinated are generally faring well.” She then pointed out that people who are unvaccinated were very much at risk.

Walensky worded her statement pretty carefully. Carlson, however, exaggerated her point just a little bit to get to his fallacious conclusion. What Carlson said is this:
“Our CDC director, Rochelle Walensky, has said the same thing. If you’re vaccinated, Rochelle Walensky has assured us, you’re safe. You’re not just protected from infection – you're protected from serious illness or hospitalization, and even the lurking menace known as the Delta variant.”
There, Carlson didn't refute Walensky’s claim that the vaccines are protective – which they obviously are. Instead, he said that public health authorities are falsely telling us that, if you’re vaccinated, “you’re safe.” All or nothing.

So, if a few people get sick after being vaccinated, does that prove that the vaccines don’t work? Of course not. It does, however, let Carlson introduce a seed of doubt.

Now, I will agree that the public health authorities, who seek for us to avoid illness, sometimes overstate their case a little bit. Wise managers know that it’s smart to under-promise and over-deliver. I certainly understand that public health authorities want to encourage us to get vaccinated and to keep ourselves safe. At the same time, no public health authority can phrase a point so carefully that someone as unscrupulous as Tucker Carlson can’t twist and squirm. 

Conspiracy theories work with fallacies by their nature. A fallacy is, by definition, a flawed argument that can be made to seem reasonable. We hear that a few people got sick after taking the vaccine, and assume that the vaccine is useless. That is a fallacy because the majority of people who take the vaccine are highly protected and safe. In our current atmosphere of political mistrust, illogical arguments find fertile ground in the minds of people who are suspicious and uninformed. Knowing this, Tucker Carlson took full advantage to spread his bizarre conspiracy theory.

I think all of us like to think in absolutes. If I never run a red light, I think I will never be hit at an intersection. If I never drink alcohol, I think I’ll never get liver disease. Unfortunately, the real world gives us few absolutes. The real world faces us with gray areas, probabilities, and risk factors. When we start to think in all-or-nothing terms, we oversimplify our problems and make bad decisions. 


Research Note: The best source about fallacies is still Howard Kahane, Logic and Contemporary Rhetoric. 

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