Category: Health

As the death toll from COVID-19 rose, people on social media started asking if anyone personally knew someone who had gotten COVID or died from it. I first thought they were curious or concerned but then I noticed a correlation: people who asked this question tended to be COVID doubters. For them, the question was not a sincere inquiry but a rhetorical tactic and an attempt to lure people into fallacious reasoning. In this essay I will look at this sort of question as a rhetorical tool.

This question can be raised about things other than COVID, so the generic question is “do you personally know anyone who X?” Used as rhetoric, the purpose is to garner either a “no” responses or no response at all. If this succeeds, it can create the impression that X is rare or does not occur. It can also create the impression that X is not serious. In the case of COVID, one goal was to create the impression that COVID is rare. Another goal was to create the impression that it is not that bad. Future pandemics will see the tactic used again.

Rhetoric is logically neutral in that it neither counts for nor against the truth of a claim. Its purpose is to influence feelings, and this is often aimed at making it easier to get people to accept or reject a claim. To use an analogy, rhetoric is like the flavoring or presentation of food: it makes it more (or less) appealing but has no effect on nutritional value. As flavoring and presentation is compatible with serving nutritional food, rhetoric is compatible with serving plausible claims and good arguments. Rhetoric can be used to influence an audience to accept a true claim. For example, a person who wants to protect sharks might address worries about shark attacks by asking the audience if anyone has been attacked by a shark. They are hoping that no one will say “yes” and plan on using that to make the audience receptive to their boring statistics showing that shark attacks are incredibly rare. 

There is an obvious risk in using this rhetorical device: it can backfire if someone says “yes”, especially if they tell a vivid story. Psychologically, people are influenced more by anecdotes (especially vivid ones) than by dull statistics. This underlies the fallacies of anecdotal evidence (rejecting statistical data in favor of a story) and misleading vividness (estimating likelihood based on how vivid an event is rather than based on how often it occurs). In the case of the shark example, if someone stands up and says a shark bit their arm off, then this will probably outweigh the statistical data about shark attacks in the minds of the audience. As such, this method can be risky to use.

If this tactic backfires and you are making a true claim, you can try to get the audience to accept the statistical data while honestly acknowledging that rare events can occur. If this tactic backfires and you are trying to deceive the audience, then there are various rhetorical tactics and fallacies that can be used. One tactic is to launch an ad hominem attack on the person who says “yes” and the usual approach is to accuse them of lying. If the attack is successful, this can make the rhetoric even more effective as those who fall for it will tend to reject anyone else who says “yes.” This is, of course, unethical.

It must also be noted that this sort of rhetoric can also be aimed at getting a “yes” response, though this is less common than the one aimed at getting “no.” The same general principles apply to this version.

If you want to be a critical thinker, you should recognize the rhetorical device that proves nothing. It must also be noted that its use disproves nothing because it would be an error to reject a person’s claim because they use this (or any) rhetoric. While rhetoric is neutral, fallacies are always bad, and this sort of question can be seen as being fallacy bait. That is, it is aimed at getting people to use or fall for fallacious reasoning.

One possibility is that the question is aimed at getting the audience to engage in the fallacy of anecdotal evidence. This fallacy is committed when a person draws a conclusion about a population based on an anecdote (a story) about one or a very small number of cases. The fallacy is also committed when someone rejects reasonable statistical data supporting a claim in favor of a single example or small number of examples that go against the claim. It has the following forms:

 

Form One

Premise 1: Anecdote A is told about a member (or small number of members) of Population P.

Conclusion: Claim C is inferred about Population P based on Anecdote A.

 

Form Two

Premise 1: Reasonable statistical evidence S exists for general claim C.

Premise 2: Anecdote A is presented that is an exception to or goes against general claim C.

Conclusion: General claim C is rejected.

 

It can also be used to lure people into accepting or making the hasty generalization fallacy. This fallacy is committed when a person draws a conclusion about a population based on a sample that is not large enough. It has the following form:

 

Premise 1: Sample S, which is too small, is taken from population P.

Conclusion: Claim C is drawn about Population P based on S.

 

The person committing the fallacy is misusing the following type of reasoning, which is known variously as Inductive Generalization, Generalization, and Statistical Generalization:

 

Premise 1: X% of all observed A’s are B’s.

Conclusion: Therefore X% of all A’s are B’s.

 

The fallacy is committed when not enough A’s are observed to warrant the conclusion. If enough A’s are observed, then the reasoning would not commit the hasty generalization fallacy. As you might have noticed, anecdotal evidence and hasty generalization are similar: both involve drawing a general conclusion based on a sample that is too small.

The “do you personally know anyone who X?” question can be used to lure people into making or accepting these fallacies in the following ways. If a few people respond “no”, then these can be taken as anecdotes that “prove” that X does not happen often (or is not serious). These “no” responses could also be taken as “disproving” a claim that is based on good statistical evidence. They could also be used as the basis of hasty generalization. For example,  to infer that because a few people said “no” to a question on Twitter, then the same holds true for the general population. A lack of responses could also be used as “evidence” in a hasty generalization. For example, someone might reason like this: no one responded “yes” to a question on Facebook, so the answer must be “no” for the general population.

While I have been focused on people raising the question in contexts in which they can get an answer, the tactic can be used in one-way communication as well (such as a YouTube video or televised speech). A person can ask this sort of question in the hope that their target audience will be influenced. For example, a politician might ask “do you personally know anyone who has died of COVID?” in the hopes of getting the audience to believe that the COVID death toll presented by credible media sources is exaggerated.

It must be noted that the same fallacies can be committed with “yes” answers. To illustrate, if a few people respond with “yes” to a Twitter question, it would also be an error to generalize to the entire population. It must also be noted that if the question is being asked in a properly conducted survey that has a large and unbiased sample, then this would probably not be intended to lure people into a fallacy. The conclusion of such a strong generalization would be reasonable to believe. Of course, the conclusion might be that many people believe something that is untrue, but it would be reasonable to believe that many people (mistakenly) believe that untrue claim.

The tactic of using this rhetorical question to bait people into fallacies is most effective when the X is something that is statistically uncommon so there is a good chance that an individual would not personally know someone who X. If X is common or the truth about X is well accepted, then this tactic will usually fail. For example, asking “do you personally know anyone who has heart disease?” would not be an effective way to get people to engage in fallacious reasoning about heart disease. This is because many people know people who have heart disease, and it is well known that it is common. As such, this tactic usually requires an X that is not too common, and which is not well known. But it is possible to undermine belief and make this tactic work.

This tactic can be effective in situations in which an occurrence is significant or serious, yet it is uncommon enough that many people will not personally know someone who has been affected. Take, for example, COVID-19. Back during the early days of the pandemic, I had 826 friends on Facebook. At that time, I personally knew two people who had been infected and did not (yet) personally know anyone who had died. As such, it would have seemed almost reasonable to infer that COVID-19 was not a big deal. However, I also do not know anyone personally who was killed on 9/11. Although I personally know several people who are active duty or veterans, I do not know anyone personally who was killed in action. I could go through lists of causes of death or serious injuries/illness and note that I do not personally know anyone who died or was other harmed. But it should be obvious that it would be an error to infer that such things do not happen or that they are not serious. In the case of COVID, it is not surprising that I did not personally know someone who died in the early days of the pandemic. Given the scope of who I personally know, it was statistically unlikely that a person who died of COVID would be within that small group. But it does not follow that the death toll from COVID presented by reputable media sources was untrue nor does it follow that COVID was not serious. After all, few would question that 9/11 occurred or was not serious because they did not personally know someone who died that day.

In closing, my main point is to be on guard against being misled by questions like “do you personally know anyone who died of COVID?” While they might be asked sincerely, they can be a rhetorical tactic aimed at baiting you into a fallacy. As the next pandemic is fast approaching, we can expect to see this tactic deployed again.

While most Americans initially supported the lockdown, a fraction of the population  engaged in (often armed) protests. While the topic of protests is primarily a matter for political philosophy and ethics, critical thinking applies here as well. Given the political success of the anti-health movement in America, we can expect protests against efforts to mitigate the next pandemic. Assuming that any efforts are made.

While the protests were miniscule in size relative to the population of the country, they attracted media attention—they made the national news regularly and the story was repeated and amplified. On the one hand, this makes sense: armed protests against efforts to protect Americans from the virus was news. On the other hand, media coverage is  disproportional to the size and importance of the protests.  The “mainstream” media is often attacked as having a liberal bias and while that can be debated, it the media does have a bias for stories that attract attention. Public and private news services need stories that draw an audience. Protests, especially by people who are armed, draw an audience.  It can also be argued that some news services have a political agenda that was served by covering such stories.

While it can be argued that such stories are worth covering in the news, disproportional coverage can lead people to commit the Spotlight Fallacy. This fallacy is committed when a person uncritically assumes that the degree of media coverage given to something is proportional to how often it occurs or its importance. It is also committed when it is uncritically assumed that the media coverage of a group is representative of the size or importance of the group.

 

Form 1

Premise 1: X receives extensive coverage in the media.

Conclusion: X occurs in a frequency or is important proportional to its coverage.

 

Form 2

Premise 1: People of type P or Group G receive extensive coverage in the media.

Conclusion: The coverage of P or G is proportional to how P and G represent the general population.

 

This line of reasoning is fallacious since the fact that someone or something attracts the most attention or coverage in the media does not mean that it is representative or that it is frequent or important.

It is like the fallacies Hasty Generalization, Biased Sample and Misleading Vividness because the error being made involves generalizing about a population based on an inadequate or flawed sample.

In the case of the lockdown protests, the protests were limited in occurrence and size, but the extent of media coverage conveyed the opposite. The defense against the Spotlight Fallacy is to look at the relevant statistics. As noted above, while the lockdown protests got a great deal of coverage, they were small events that were not widespread. This is not to say that they have no importance. As such we should look at such protests not through the magnifying glass of the media but through the corrective lenses of statistics. I now turn to an ad hominem attack on the protesters.

Some critics of the protesters pointed out that the protesters were also being manipulated by an astroturfing campaign. Astroturfing is a technique in which the true sponsors of a message or organization create the appearance that the message or organization is the result of grassroots activism. In the case of the lockdown protests, support and organization was being provided by individuals and groups supporting Trump’s re-election and who were more concerned with a return to making money than the safety of the American people.  While such astroturfing is a matter of concern, to reject the claims of the protesters because they are “protesting on AstroTurf” rather than standing on true grassroots would be to commit either an ad hominem or genetic fallacy.

An ad hominem fallacy occurs when a person’s claim is rejected because of some alleged irrelevant defect about the person. In very general terms, the fallacy has this form:

 

Premise 1: Person A makes claim C.

Premise 2: An irrelevant attack is made on A.

Conclusion: C is false.

 

This is a fallacy because attacking a person does not disprove the claim they have made. In the case of a lockdown protester, rejecting their claims because they might be manipulated by astroturfing would be a fallacy. As would rejecting their claims because of something one does not like about them.

If the claims made by the protesters as a group were rejected because of the astroturfing (or other irrelevant reasons) then the genetic fallacy would have been committed. A Genetic Fallacy is bad “reasoning” in which a perceived defect in the origin of a claim or thing is taken to be evidence that discredits the claim or thing itself. Whereas the ad hominem fallacy is literally against the person, the genetic fallacy applies to groups. The group form looks like this:

 

Premise 1: Group A makes claim C.

Premise 2: Group A has some alleged defect.

Conclusion: C is false.

 

While it is important to avoid committing fallacies against the protesters, it is also important to avoid committing fallacies in their favor. Both the ad hominem and genetic fallacy can obviously be committed against those who are critical of the protesters. For example, if someone dismisses the claim that the protesters are putting themselves and others at needless risk by asserting that the critic “hates Trump and freedom”, then they would be committing an ad hominem. The same will apply to future protests about responses to pandemics. Again, assuming there will be a response.

To many Americans the protests seemed not only odd, but dangerously crazy. This leads to the obvious question of why they occurred. While some might be tempted to insult and attack the protesters under the guise of analysis, I will focus on a neutral explanation that is relevant to critical thinking. This analysis should also be useful for thinking about the next pandemic.

One obvious reason for the protests is that the lockdown came with an extremely high price—people had good reason to dislike it and this could have motivated them to protest. But there is more to it than that. The protests were more than people expressing their concerns and worries about the lockdown. They were political statements and thoroughly entangled with other factors that included supporting Trump, anti-vaccination views, anti-abortion views, second-amendment rights and even some white nationalism. This is not to claim that every protester endorsed all the views expressed at the protests. Attending a protest about one thing does not entail that a person supports whatever is said by other protesters. Because people try to exploit protests for their own purpose it is important to distinguish the views held by various protestors to avoid falling into assigning guilt by association. That said, the protests were an expression of a polarized political view and it struck many as odd that people would be protesting basic pandemic precautions.

One driving force behind this was what I have been calling the Two Sides Problem. While there are many manifestations of this problem, the idea is that when there are two polarized sides, this provides fuel and accelerant to rhetoric and fallacies—thus making them more likely to occur. Another aspect of having two sides is that it is much easier to exploit and manipulate people by appealing to their membership in one group and their opposition to another.

In the case of the protests, there was a weaponization of public health. Those who recommend the lockdown are expert and there is a anti-expert bias in the United States. The weaponization of the crisis to help the political right followed the usual tactics: disinformation about the crisis, claims of hoaxes, scapegoating, anti-expert rhetoric, conspiracy theories and such. Part of what drove this was in-group bias: the cognitive bias that inclines people to assign positive qualities to their own group while assigning negative qualities to others. This also applies to accepting or rejecting claims.

This weaponization was not new or unique to the COVID-19 pandemic. American politics has been marked by politicizing and weaponizing so that one side can claim a short-term advantage at the cost of long-term harm. Critical thinking requires us to be aware of this and to be honest about the cost of allowing this to be a standard tool of politics.

While there were many aspects to the lockdown protests, one of the core justifications was that the lockdown was a violation of Constitutional rights. The constitutional aspect is a matter of law, and I leave that to experts in law to debate. There is also the ethical aspect—whether the lockdown is morally acceptable, and this issue can be cast in terms of moral rights.  This discussion would take us far afield into the realm of moral philosophy, but I will close with an analogy that might be worth considering.

While the protesters were against the lockdown in general, opposition to wearing masks was the focus of the complaints. While there was rational debate about the efficacy of masks, the moral argument advanced was that the state does not have the right to compel people to wear masks. It can also be presented in terms of people having rights that the state must respect. One possibility is that people have the right to decide what parts of the body they wish to cover. If so, the obvious analogical argument is that if this right entitles people to go without masks, it also entitles people to go without any clothes they choose not to wear. If imposing masks is an act of oppression, then so is imposing clothing in general.

Another possible right is the right to endanger others or at least freely expose other people to bodily “ejections” they do not wish to encounter. If there is such a right, then it could be argued that people have a right to fire their guns and drive as they wish, even if doing so is likely to harm or kill others. If there is a right to expose other people to physical bodily ejections that they do not want to be exposed to, then this would entail that people have the right to spit and urinate on other people. This all seems absurd.

As a practical matter, people are incredibly inconsistent when it comes to rights and restrictions, so I would expect some people to simply dismiss these analogies because they did not want to wear masks but probably do not want people running around naked. But if masks were an act of oppression, so are clothes.

When the next pandemic arrives, we can expect similar protests against efforts to combat it. But this assumes that efforts will be taken, which will depend on who is running America during the next pandemic.

One stock argument against social distancing and other restricted responses to the COVID-19  pandemic was to conclude  these measures should not have been taken because we do not take similar approaches to comparable causes of death. In the next pandemic, we can expect the same reasoning which can be formalized as follows:

 

Premise 1: Another cause of death kills as many or more people.

Premise 2: We do not impose X measures to address this cause of death.

Conclusion: We should not impose X measures to address the pandemic.

 

Those making the argument often used the flu as an analogous cause of death, but there were also comparisons to automobile accidents, suicides, heart disease, drowning in pools and so on. While the specific arguments were presented in various ways, they were all arguments from analogy. Or at least attempts.

Informally, an argument by analogy is an argument in which it is concluded that because two things are alike in certain ways, they are alike in some other way. More formally, the argument looks like this:

 

            Premise 1: X and Y have properties P, Q, R.

            Premise 2: X has property Z.

            Conclusion: Y has property Z.

 

X and Y are variables that stand for whatever is being compared, such as causes of death. P, Q, R, and are also variables, but they stand for properties or features that X and Y are known to possess, such as killing people. Z is also a variable, and it stands for the property or feature that X is known to possess, such as not being addressed with social distancing. The use of P, Q, and R is just for the sake of the illustration—the things being compared might have many more properties in common.

An argument by analogy is an inductive argument. This means that it is supposed to be such that if all the premises are true, then the conclusion is probably true. Like other inductive arguments, the argument by analogy is assessed by applying standards to determine the quality of the logic. Like all arguments, there is also the question of whether the premises are true. The strength of an analogical argument depends on three factors. To the extent that an analogical argument meets these standards it is a strong argument.

First, the more properties X and Y have in common, the better the argument. This standard is based on the commonsense notion that the more two things are alike in other ways, the more likely it is that they will be alike in some other way. It should be noted that even if the two things are alike in many respects, they might not be alike in terms of property Z. This is one reason why analogical arguments are inductive.

Second, the more relevant the shared properties are to property Z, the stronger the argument. A specific property, for example P, is relevant to property Z if the presence or absence of P affects the likelihood that Z will be present. It should be kept in mind that it is possible for X and Y to share relevant properties while Y does not actually have property Z. Again, this is part of the reason why analogical arguments are inductive.

Third, it must be determined whether X and Y have relevant dissimilarities. The more dissimilarities and the more relevant they are, the weaker the argument.

These can be simplified to a basic standard: the more like the two things are in relevant ways, the stronger the argument. And the more the two things are different in relevant ways, the weaker the argument. So, using these standards let us consider the cause of death analogy.

One thing that all causes of death do have in common is that they are causes of death. This is true of everything from swimming pools to the flu to COVID-19. Obviously, different causes of death will be more or less like COVID-19 or other pandemic caused deaths and a full consideration would require grinding through each argument to see if it holds up. In the interest of time, I will consider two main categories of causes of death that should encompass most (if not all) causes.

One category of causes of death consists of those that cannot be addressed by social distancing and the other science-based approaches to COVID-19 and other likely pandemic pathogens. These include such things as suicide, traffic fatalities and swimming pool deaths.  We obviously do not use social distancing to address these causes of death because they would not work. As such, arguing that because we do not use social distancing to combat traffic deaths so we should not use it to combat COVID-19 (or another pathogen) would be a terrible analogy. To use an analogy, this would be like arguing that since we do not use air bags and seat belts to address pandemics, we should not use them to reduce traffic fatalities. This would be bad reasoning. 

To be fair, someone could argue that what matters is not the specific responses but the degree of the response. That is, since we do not have a massive and restrictive response to traffic fatalities, we should not have had a massive response to COVID-19 or have a similar response to the next pandemic. While it is rational to make a response proportional to the threat, the obvious reply to this argument is that we do have a massive and restrictive response to traffic fatalities. Vehicles must meet safety standards, drivers must be licensed, there are books of traffic laws, traffic is strictly regulated with signs, lights and road markings, and the police patrol the roads regularly. Even swimming pools are heavily regulated in the United States. For example, fences and self-locking gates are mandatory in most places. Somewhat ironically, drawing an analogy to things like traffic fatalities supports massive and restrictive means of addressing a pandemic.

Horribly, the best (worst) way to argue against a strong response to a pandemic would be to find a cause of death on the scale of the pandemic that we as a nation do little about and then argue that the same neglect should be applied to the pandemic. Poverty and lack of health care are two examples.  This analogy would certainly appeal to evil people.

The second category of deaths consists of causes that could be addressed using the same methods used to address a pandemic. The common flu serves as an excellent example here. The same methods that work against COVID-19 and many other pathogens also work against the flu. As many argued, even in a bad flu year life remains normal: no social distancing, no closing of businesses, no mandatory masks. While this analogy seems appealing, it falls apart quickly because of the relevant differences between COVID-19 and the common flu. The same would also apply to the next dangerous pandemic.

When people started advancing death analogies against pandemic responses, the best available estimate about COVID-19 was that it killed 3-4% of those infected—though there was considerable variation based on such factors as age, access to health care, and underlying health conditions.  In contrast, the flu has a mortality rate well below .1%. It kills too many people but was less dangerous than COVID-19. So, it makes sense to have a more restrictive and extensive response to something that is more dangerous. We also have(or had) measures in place against the flu: people are urged to take precautions and flu shots are recommended. As this is being written, people feel that the threat of COVID is like that of the seasonal flu and acting accordingly. Likewise, if a dangerous strain of flu emerges again, then it would make sense to step up our restrictions.

In closing, this discussion does lead to a matter of ethics and public policy. As those who make the death analogies note, we collectively tolerate a certain number of preventable deaths. We must seriously address the issue of determining the acceptable number of deaths from the next pandemic and match our response to that judgment. And we should not forget that we might be among those tolerated deaths. We should also consider why we do tolerate so many other deaths.

Stay safe and I will see you in the future.

During the COVID-19 pandemic some public figures and social media users attempted to downplay the danger of COVID-19 by comparing the number of deaths caused by the virus to other causes of deaths.  For example, a common example noted that 21,297 people died from 1/2/202 to 3/25/200 from COVID-19 but that 113,000 people died from the flu during the same period.

Downplaying is a rhetorical technique used to make something seem less important or serious. These comparisons seemed aimed at dismissing claims made by experts that the virus was a serious threat. The comparisons were also often used to persuade people that the response was excessive and unnecessary. While comparing causes of death is useful when judging how to use resources and accurately assess threats, the death comparisons must be done with a critical eye. That was true in the last pandemic, and it will be true in the next one.

Before even considering the comparison between pandemic deaths and other causes of death, it is important to determine the accuracy of the numbers. If the numbers are exaggerated, downplayed or otherwise inaccurate, then this undermines the comparison. Even if the numbers are accurate, the comparison must be critically assessed. The methods I will discuss are those I use in my Critical Inquiry class and are drawn from Moore and Parker’s Critical Thinking text. When an important comparison is made, you should ask four questions:

 

1. Is important information missing?
2. Is the same standard of comparison being used? Are the same reporting and recording practices being used?
3. Are the items comparable?
4. Is the comparison expressed as an average?

 

While question 4 does not apply, the other three do. One important piece of missing information in such comparisons is that while the other causes of death tend to be stable over time, the deaths caused by COVID-19 grew exponentially. On March 1 the WHO reported 53 deaths that day. 862 deaths were reported on March 16. On March 30 there were 3215 new deaths. On April 8 the United States alone  had 1,997 deaths and 14.390 people are believed to have died in the United States since the start of the pandemic. The death toll kept rising. In contrast, while seasonal flu deaths fluctuate, they do not grow in this exponential manner. As such, the comparison is flawed. We can expect similar comparisons to be made in the next pandemic and should be on guard against erroneous comparisons of this sort.

Another flaw in the comparison is that the flu and many other causes of death are well established. The COVID-19 virus was still spreading when the comparison was made. It would be like comparing a fire that just started with a fire that has been steadily burning and confidently claiming that the new fire would not be as bad as the old fire.

Death numbers are also most likely an estimate from past yearly death tolls. What the numbers reflect is the number of people who probably died of those causes during a few months based on data from previous years. 

While the death toll from COVID-19 was high, COVID-19 deaths were also likely to be underreported. Since testing was limited for quite some time, some people who died from the virus did not have their cause of death properly reported. Even in the early days of the death comparison, the deaths caused by COVID-19 were most likely higher than reported. This leads to two problems with the comparison. One is that if the other causes of death are accurately reported and COVID-19 deaths were not, then the comparison is flawed. The second is that COVID-19 deaths might have been recorded as being caused by something else (such as the flu/pneumonia) and this would also make the comparison less accurate by “increasing” the number of deaths by other causes. 

While the comparison to other causes of death might have seemed persuasive early in the pandemic, the exponential increase in deaths is like to have robbed the comparison of its persuasive power. In mid-April, COVID-19 was killing more Americans per week than automobile accidents, cancer, heart disease and the flu/pneumonia did in 2018.  Somewhat ironically, a comparison of COVID-19 deaths ended up showing the reverse of what the comparison was originally intended to do.

We can expect similar death comparisons in the early days of the next pandemic. While these comparisons can have merit, they are often used as rhetorical devices to downplay the seriousness of a pandemic. As such, we should be on guard against this tactic during the next pandemic.

In the last essay I looked at the inductive generalization and its usefulness in reasoning about pandemics and ended by mentioning that there are various fallacies that can occur when generalizing. The most common are hasty generalization, appeal to anecdotal evidence, and biased generalization. I will look at each of them in terms of pandemics.

A hasty generalization occurs when a person draws a conclusion about a population based on a sample that is not large enough to adequately support the concussion. It has the following form:

 

Premise 1: Sample S (which is too small) is taken from population P.

Premise 2: In Sample S X% of the observed A’s are B’s.

Conclusion: X% of all A’s are B’s in Population P.

 

In the previous essay I presented a rough guide to sample size,  margin of error and confidence level. In that context, this fallacy occurs when the sample is not large enough to warrant confidence in the conclusion. In the case of a pandemic, one important generalization involves sorting out the lethality of the pathogen. Math for this is easy but the challenge is getting the right information.

During the COVID-19 pandemic, there were large samples of infected people.  As such, inferences from these large samples to the lethality of the virus would not be a hasty generalization. But avoiding this fallacy does not mean that the generalization is a good one as there are other things that can go wrong.

There were also inferences drawn from relatively small samples, such as generalizations from treatments undergoing testing. For example, the initial samples of people treated with hydroxychloroquine for COVID-19 were small, so generalizing from those samples risked committing a hasty generalization. This isn’t to say that small samples are always useless but due care must be taken when generalizing from them.

As a practical guide, when you hear claims about a pandemic (or anything) based on generalizations you need to consider whether the conclusion is supported by an adequately sized sample. While having a sample that is too small does not entail that the conclusion is false (that inference would be fallacious) but the conclusion would not be adequately supported. While a small sample provides weak logical support, an anecdote can have considerable psychological force which leads to a fallacy similar to the hasty generalization.

An appeal to anecdotal evidence is committed when a person draws a conclusion about a population based on an anecdote (a story) about one or very few cases. The fallacy is also committed when someone rejects reasonable statistical data supporting a claim in favor of a single example or small number of examples that go against the claim. There are two forms for this fallacy:

 

Form One

Premise 1:  Anecdote A is told about a member M (or small number of members) of Population P.

Premise 2: Anecdote A says that M is (or is not) C.

Conclusion: Therefore, C is (or is not) true of Population P.

 

Form Two

Premise 1:  Good statistical evidence exists for general claim C.

Premise 2: Anecdote A is is an exception to or goes against general claim C.

Conclusion: C is false.

 

This fallacy is like hasty generalization in that an inference is drawn from a sample too small to adequately support the conclusion. One difference between hasty generalization and anecdotal evidence is that the fallacy of anecdotal evidence involves using a story (anecdote) as the sample. Out in the wild it can be difficult to distinguish as hasty generalization from anecdotal evidence. Fortunately, what is most important is recognizing that a fallacy is occurring. A much clearer difference is that the paradigm form of anecdotal evidence involves rejecting statistical data in favor of the anecdote.

People often fall victim to this fallacy because anecdotes usually have much more psychological force than statistical data. Wanting an anecdote to be true also fuels this fallacy. During the COVID-19 pandemic, there were many anecdotes about alleged means of curing or preventing or curing the disease and the same will happen during the next pandemic. Even if the anecdotes are not lies, they do not provide an adequate basis for drawing conclusions about the general population. This is because the sample is not large enough to warrant the conclusion. As a concrete example, while there were some early positive anecdotes about hydroxychloroquine. Then wishful thinking and Trump’s claims caused some people to accept the anecdotes as adequate evidence, but this was bad reasoning.

Appeals to anecdotal evidence often occur in the context of causal reasoning, such as the case of hydroxychloroquine, and this adds additional complexities.

As with any fallacy, it does not follow that the conclusion of an appeal to anecdotal evidence is false. The error is accepting the conclusion based on inadequate evidence, not in making a false claim. It is also worth noting that anecdotal evidence can be useful for possible additional investigation but is not enough to prove a general claim.

As noted earlier, there were large samples of infected people that allowed generalizations to be drawn without committing the fallacy of hasty generalization. But even large samples can be problematic. This is because samples need to be both large enough and representative enough. This takes us to the fallacy of biased generalization.

This fallacy is committed when a person draws a conclusion about a population based on a sample that is biased to a degree or in a way that prevents it from adequately supporting the conclusion.

 

Premise 1: Sample S (which is too biased) is taken from population P.

Premise 2: In Sample S X% of the observed A’s are B’s.

Conclusion: X% of all A’s are B’s in Population P.

 

The problem with a biased sample is that it does not represent the population adequately and so does not adequately support the conclusion. This is because a biased sample can differ in relevant ways from the population that affects the percentages of A’s that are B’s.

In the case of COVID-19 there was a serious problem with biased samples, although the situation improved over time. I will focus on an inductive generalization about the lethality of the virus.

The math for calculating lethality is easy but the main challenge is sorting out how many people are infected.   Since the start of the pandemic, the United States had a self-inflicted shortage of test kits. Because of this, many of the available tests were being used on people showing symptoms or who were exposed to those known to be infected. This sample was sample was large but biased: it contained a disproportionate number of people who were already showing symptoms and missed many people who were infected but asymptomatic.

If we face a similar situation in the next pandemic, the sample will probably have a lethality rate higher than the real lethality rate. To use a simple fictional example: imagine a population of 1000 people and 200 of them are infected with a virus. Of the 200 people infected, 20 show symptoms and only they are tested.  Of the 20 people tested, 2 die. This sample would show a mortality rate of 10%. But the actual mortality rate would be 2 in 200 which is 1 %.  This would still be bad, but not as bad as the biased sample would indicate. This shows one of the many reasons why broad testing is important: it is critical to establish an accurate lethality rate. An accurate lethality rate is essential to making rational decisions about our response to any pandemic.

As a final point, it is also important to remember that the lethality varies between groups in the overall population—we know this based on the death data. But to determine the lethality for each group, the samples used for the calculation must be representative of the population. While overall lethality is important, making rational decision making also requires knowing the lethality for various groups. For example, pathogens tend to be more lethal for seniors and they would need more protection in the next pandemic.

As always, stay safe and I will see you in the future.

During a White House press briefing President Trump expressed interest in injecting disinfectants as a treatment for COVID-19. In response  medical experts and the manufacturers of Lysol warned the public against attempting this. Trump’s defenders adopted two main strategies. The first was to interpret Trump’s statements in a favorable way; the second was to assert they were “fact checking” the claim that Trump told people to inject disinfectant. Trump eventually claimed that he was being sarcastic to see what the reporters would do. From the standpoint of critical thinking, there is lot going on with rhetorical devices and fallacies. I will discuss how critical thinking can sort through this sort of situation, because the next pandemic is likely to see a repeat performance.

When interpreting or reconstructing claims and arguments, philosophers are supposed to apply the principle of charity. Following this principle requires interpreting claims in the best possible light and reconstructing arguments to make them as strong as possible. There are three reasons to follow the principle. The first is that doing so is ethical. The second is that doing so avoids committing the straw person fallacy, which I will talk more about in a bit. The third is that if I am going to criticize a person’s claims or arguments, criticism of the best and strongest versions also takes care of the lesser versions.

The principle of charity must be tempered by the principle of plausibility: claims must be interpreted, and arguments reconstructed in a way that matches what is known about the source and the context. For example, reading quantum physics into the works of our good dead friend Plato would violate this principle.

Getting back to injecting disinfectants, it is important to accurately present Trump’s statements in context and to avoid making a straw person. The Straw Person fallacy is committed when one ignores a person’s actual claim or argument and substitutes a distorted, exaggerated or misrepresented version of it. This sort of “reasoning” has the following pattern:

 

Premise 1: Person A makes claim or argument X.

Premise 2: Person B presents Y (which is a distorted version of X).

Premise 3: Person B attacks Y.

Conclusion: Therefore, X is false/incorrect/flawed.

 

This sort of “reasoning” is fallacious because attacking a distorted version of a claim or argument is not a criticism of the original. This fallacy often uses hyperbole, a rhetorical device in which one makes an exaggerated claim. A straw serson can be effective because people often do not know the real claim or argument being attacked. The fallacy is especially effective when the straw person matches the audience’s biases or stereotypes as they will feel that the distorted version is the real version.

While this fallacy is usually aimed at an audience, it can be self-inflicted: a person can unwittingly make a Straw Person out of a claim or argument. This can be done entirely in error (perhaps due to ignorance) or due to the influence of prejudices and biases.

The defense against a Straw Man, self-inflicted or not, is to get a person’s claim or argument right and to apply the principle of charity and the principle of plausibility.

Some of Trump’s defenders claimed Trump was the victim of a straw person attack; they set off on a journey of “fact checking” and asserted that Trump did not tell people to drink bleach. Somewhat ironically, they might have engaged in Straw Person attacks when attempting to defend Trump from alleged Straw Person attacks. Warning people to not drink bleach or inject disinfectants is not the same thing as claiming that Trump told people to do these things.

The truth is that Trump did not tell people to drink bleach. His exact words, from the official White House transcript, are: “And then I see the disinfectant, where it knocks it out in a minute. One minute. And is there a way we can do something like that, by injection inside or almost a cleaning. Because you see it gets in the lungs and it does a tremendous number on the lungs. So it would be interesting to check that. So, that, you’re going to have to use medical doctors with. But it sounds — it sounds interesting to me.”

Trump did not tell people to drink bleach or inject disinfectant. As such, the “Clorox Chewables” and similar memes were a form of visual Straw Person attack against Trump. But they can also be seen as the rhetorical device of mockery. To avoid committing the Straw Person fallacy, we need to use Trump’s actual statements and attacking him for advocating drinking bleach would be an error.

While Trump does not directly tell people inject disinfectants, he can be seen as engaging in a form of innuendo, a rhetorical technique in which something is suggested or implied without directly saying it. Anyone who understands the basics of how language and influence works would get that Trump’s remarks would cause some people to believe that this was something worth considering. There is evidence for this in the form of calls to New York City poison control centers and similar calls in Maryland and other states. A feature of innuendo is that it allows a person to deny they said what they implied or suggested, after all, they did not directly say it. Holding someone accountable requires having adequate evidence that they intended what their words implied or suggested. Doing this can be challenging since it requires insights into their character and motives. There is also a moral issue here about the responsibility of influential people to take care in what they say, something that goes beyond critical thinking and into ethics. But a president needs to be careful in what they say.

Trump used words indicating he thought medical doctors should test injecting disinfectants into peoples’ lungs as a possible treatment for COVID-19. Given Trump’s well-established record of dangerous ignorance, interpreting his words as meaning what they state does meet the conditions of the principle of charity and the principle of plausibility: these are his exact words, in context and with full consideration of the source.

Some of Trump’s defenders also tried to use what could be called the Steel Person fallacy. The Steel Person fallacy involves ignoring a person’s claim or argument and substituting a better one in its place.  This sort of “reasoning” has the following pattern:

 

Premise 1: Person A makes claim or argument X.

Premise 2: Person B presents Y (a better version of X).

Premise 3: Person B defends Y.

Conclusion: Therefore, X is true/correct/good.

 

This sort of “reasoning” is fallacious because presenting and defending a better version of a claim or argument does not show the original is good. A Steel Person can be effective because people often do not know the real claim or argument being defended. The fallacy is especially effective when the Steel Person matches the audience’s positive biases or stereotypes, they will feel the improved version is the real version and accept it. The difference between applying the principle of charity and committing a Steel Person fallacy lies in the intention: the principle of charity is aimed at being fair, the Steel Person fallacy is aimed at making a person’s claim or argument appear much better and so is an attempt at deceit.

While this fallacy is generally aimed at an audience, it can also be self-inflicted: a person can unwittingly make a Steel Person out of a claim or argument. This can be done in error (perhaps due to ignorance) or due to the influence of positive biases. The defense against a Steel Man, self-inflicted or not, is to take care to get a person’s claim or argument right and to apply the principle of plausibility.

In the case of Trump, he was clearly expressing interest in injecting disinfectants into the human body. Some of his defenders created a Steel Man version of his claims, contending that what he really was doing was presenting new information about using light, heat and disinfectant killing the virus. To conclude that Trump was right because of this better version would be an error in logic. While light, heat and disinfectant will destroy the virus, Trump’s claim was about injecting disinfectant into the human body—which, while not telling people to drink bleach, is a dangerously wrong claim.

Trump himself undermined these defenders by saying “I was asking a question sarcastically to reporters like you just to see what would happen.” If this is true, then his defenders’ claims that he was not talking about injecting disinfectant would be false. He cannot have been saying something dangerously crazy to troll the press and making a true and rational claim about cleaning surfaces.  Trump seems to have  used a rhetorical device popular with the right (although anyone can use it). This method could be called the “just kidding” technique and can be put in the meme terms “for the lulz.”

One version of the “just kidding” tactic occurs when a person says something that is racist, bigoted, sexist, or otherwise awful and does not get the positive response they expected. The person’s “defense” is that they did not really mean what they said, they were “just kidding.” As a rhetorical technique, it is an evasive maneuver designed to avoid accountability. The defense against this tactic is to assess whether the person was plausibly kidding. Did they intend to be funny without malicious intent and fail or are they trying to weasel out of accountability? This can be difficult to sort out, since you need to have some insight into the person’s motives, character and so on.

Another version of the “just kidding” tactic is similar to the “I meant to do that” tactic. When someone does something embarrassing or stupid, they will often try to reduce humiliation by claiming they intended to do it. In Trump’s injection case, he claimed he intended to say what he said and that he was being sarcastic. He meant to do it but was just kidding.

If Trump was just kidding, he thought it was a good idea to troll the media during a pandemic—which is a matter for ethics rather than critical thinking. If he was not kidding, then he was attempting to avoid accountability for his claim, which is the point of this tactic. The defense against this tactic is to assess whether the person was plausibly kidding, that is, did they really mean to do it and what they meant to do was just kidding? This requires having some insight into the person’s character and motives as well as considering the context. In the case of Trump, the video shows him addressing his remarks to the experts rather than the press and he seems completely serious. There is also the fact that a president engaged in a briefing on a pandemic should be serious rather than sarcastic. As such, he does not seem to be kidding. But Trump put himself in a dilemma of awfulness: he was either seriously suggesting a dangerous idea or trying to troll the press during a briefing on a pandemic that was killing thousands of Americans. Either way, that would be terrible. While this essay focuses on Trump and the COVID-19 pandemic; we should expect something similar, if not worse, should another pandemic arise during Trump’s reign.