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Equivocation Fallacy Explained, with Examples

Updated on
July 18, 2022
Writing Tips
Equivocation Fallacy Explained, with Examples

How many is a few? 

As you’ve most likely heard people say (and quite likely said yourself), a few can mean three. Or four. Or seven. Because there’s no real cutoff for what makes “a few” of something. Nor is there a concrete cutoff for “a couple of things” or “several things.” 

But if somebody told you they’re a great student because they slept through class only a few times, what would you think? And then what would you think if you asked them to clarify their statement and found out they slept through class twelve times during the semester?

You’d probably feel deceived, and you might point out that they purposely used the phrase’s ambiguity to hide just how many times they actually slept through class. Because that’s exactly what they did. There’s a name for this kind of deception: equivocation. 

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What is the equivocation logical fallacy?

Equivocation, aka “calling two different things by the same name,” is the logical fallacy of using a word or phrase in an argument either:

  • In an ambiguous way
  • To mean two or more things

Here’s an example:

  • Salad is healthy, and taco salad is a salad. Therefore, taco salad is healthy. 

Obviously, taco salad isn’t a dish most people would consider healthy. Sometimes, equivocation is used for a humorous effect. In other cases, it’s employed as a way to make a bad faith argument. For example, when asked about an overdue assignment, a student might tell their teacher that they worked on the assignment the night before. It’s technically true, but while the student assumes the teacher thinks they mean “finished,” they actually meant that they merely did some work on the still-unfinished assignment. 

The phrase “bad faith argument” means a statement or position that the arguer knows isn’t honest or fair. Generally, individuals make bad faith arguments in attempts to avoid having to think critically about the issues they’re discussing and to avoid acknowledging that their opponents’ positions are well-reasoned and understandable. Equivocation isn’t the only logical fallacy that can be employed in a bad faith argument or an argumentative essay. Other fallacies that often arise in these kinds of discussions include the straw man fallacy and red herring fallacy

Equivocation is an informal fallacy, which means the illogical part of the argument lies with how the argument is applied rather than the structure of the argument itself. 

Equivocation is often spelled out in this format: “If X is Y, and Y is Z, then Z must be X.” Here are a few examples:

  • Soil is natural. Natural things are good for you. So it’s okay to ingest soil. 
  • All men are created equal. Women aren’t men, so all women aren’t created equal. 
  • Cats make great pets. Tigers are big cats. That means tigers make great pets.

Equivocation is easy to spot when it’s spelled out like this. It can even seem comically simple, so much so that it feels ridiculous to group it with other logical fallacies you might encounter in writing

But equivocation isn’t always formatted this way. Sometimes, as we discussed in our example of the student telling their teacher that they’d worked on their assignment the night before, it’s used as a strategy to lie by omission. Here are a few examples:

  • A driver who gets pulled over tells the officer that they drank only a few beers when in reality they had a few beers plus two mixed drinks. 
  • A consultant tells you they haven’t worked for your direct competitor but fails to mention that they’ve worked for other competitors. 
  • A pharmaceutical company states that a drug could have minor side effects when they know that the drug can actually cause heart attacks.

What is the purpose of the equivocation fallacy?

Equivocation is often used as an obfuscation strategy. Another term you might know, doublespeak, refers to equivocation. A few common instances of doublespeak in English include:

  • Ill-advised instead of flawed idea
  • Person of interest instead of suspect
  • Reducing costs instead of cutting jobs

Doublespeak often involves euphemisms, but it doesn’t always. Because there are so many ways to use equivocation, it can be one of the trickier logical fallacies to pick out in a piece of writing. 

You can identify equivocation in writing by examining an argument closely to find the gap between the arguer’s initial claim and their final conclusion. This can take some dissecting, especially when you’re facing an argument that isn’t as clearly spelled out as those in the first set of examples we provided. Take a look at this example: 

  • A self-defense class teaches participants how to fight better, but fighting is wrong. So we shouldn’t have a self-defense class on campus. 

The arguer begins with the premise that self-defense classes teach their participants how to fight more effectively. Whether this is true or not, this is the arguer’s assertion. Remember, dismantling a logical fallacy involves pointing out the flaw in how the argument is constructed, not proving it wrong. Whether a statement is true or false has nothing to do with whether it’s fallacious or not. 

Next, look at the arguer’s final conclusion: we shouldn’t have self-defense classes on campus. They don’t claim this is because the classes would teach participants how to fight better but because fighting is wrong. That second claim, that fighting is wrong, does not logically follow the first claim. Again, whether it’s true or not is irrelevant here—logically, a more sound claim would be that making students better fighters would lead to more interpersonal violence. 

Working through an instance of equivocation requires some critical thinking to identify fact versus the writer’s opinion. Similarly, it requires you to take a nuanced look at the argument—while you might agree that fighting is wrong in most circumstances, you likely also agree that knowing how to defend oneself from an unprovoked attack can be an important skill. 

When you’re facing equivocation in a written discussion or a face-to-face debate, ask your opponent to clarify their statement. Tell them that you can’t respond critically to vague claims, so in order to continue the discussion in good faith, you need specific examples or concrete figures. You can also ask them to explain how they came to the conclusions they’re stating—which, if they’re open to it, might cause them to see the flaw in their own argument. 

Examples of equivocation logical fallacy

Equivocation can look like this:

  • I told my family that I’d miss the reunion because I’m coming home from vacation that week. I get home Thursday, and the reunion is Friday, but I didn’t lie to them about when I would be home. 
  • Raspberries are fruits, so raspberry sherbet counts as a serving of fruit. 

It can also look like this: 

  • Our company prides itself on efficiency, which is why we’ve decided to reduce costs this year.
  • I have the right to free speech, so it’s right for me to say whatever I want. 

Equivocation logical fallacy FAQs

What is the equivocation logical fallacy?

Equivocation is the logical fallacy of using a word or phrase in an argument in either an ambiguous way or to mean two or more things

How does the equivocation logical fallacy work?

The equivocation fallacy works by relying on a word’s ambiguous meaning or distinct meanings to confuse and withhold information from the reader or listener. 

How can you identify the equivocation fallacy?

You can identify equivocation in writing by examining an argument closely to find the gap between the arguer’s initial claim and their final conclusion. In some cases, it requires you to take a nuanced look at the argument and separate the writer’s opinion from fact. 

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