The Logical Fallacies Wrecking Our Discourse

This entry is part 5 of 6 in the series Logical Fallacies and Cognitive Biases
TL;DR: When intelligent people make terrible arguments, logical fallacies are usually the culprit. These systematic errors in reasoning do more than weaken individual debates; they are destroying our capacity for productive conversation, and social media has turned the destruction into a spectator sport. I run into them constantly, in public discourse and in the manuscripts I ghostwrite, where a client will build a brilliant argument for three chapters and then undermine it with a single fallacy they cannot see because it feels true. Feeling true and being true are different things, and the gap between them is where most bad thinking lives. Here are the ten I see most often, with the fixes.

A fallacy is a counterfeit argument. It has the shape of reasoning, the weight and the confident delivery, but there is nothing real backing it, and like counterfeit currency it works fine until someone inspects it. The trouble is that most people never inspect, because a fallacy that confirms what they already believe passes through without a second glance.

Learning to spot the ten below is learning to hold each argument up to the light before you accept it, especially when the argument is your own and especially when you want it to be true.

What is the ad hominem fallacy?

Someone proposes a policy. Instead of addressing whether it would work, the response targets their divorce, their weight, their past failures, or their motivations. The underlying logic is that this person is flawed, therefore the argument is flawed. It is satisfying because it is easy. Engaging with a complex argument takes effort. Dismissing the person who made it takes a sentence.

Personal attacks tell you nothing about whether an idea has merit. A terrible person can have a good idea, and a wonderful person a terrible one. I see this constantly in political commentary. Someone with legitimate policy concerns wraps them in personal insults, and the insults are all anyone remembers while the concerns disappear.

The fix: Ask whether the criticism would be valid regardless of who made the argument. If not, you are attacking the person, not the idea.

How does confirmation bias cherry-pick reality?

A company’s stock drops 14% and the headlines scream disaster. The same company has gained 800% over five years and nobody mentions it. A CEO makes one bad decision and it becomes proof of incompetence while a decade of good decisions vanishes from the analysis. That is intellectual hoarding, not analysis. You collect the evidence that supports your conclusion and throw away everything else. The result looks convincing because you built it to look convincing.

Writers fall into this trap researching nonfiction. They start with a thesis and gather only supporting evidence. The book sounds authoritative until someone with a different collection of facts tears it apart in a review.

The fix: Before publishing any argument, ask what evidence would change your mind. If you cannot think of anything, bias is driving your conclusion.

Why is the false dilemma so seductive?

“You’re either for government regulation or you want corporations to run everything.” “You either support the military or you hate the troops.” “You’re either with us or against us.” False dilemmas force complex issues into binary choices that do not exist. Most real problems have dozens of possible approaches, and the best solutions usually combine elements the false dilemma treats as incompatible.

You can support government oversight and believe some agencies waste money. You can respect the military and oppose a specific war. You can admire someone’s work in one area and criticize it in another. Those positions are not contradictory. They are how adults think about complicated subjects.

The fix: Watch for “either/or” framing. If someone presents only two options on a complex issue, they have probably eliminated the most useful ones.

What happens when emotion replaces evidence?

What happens when emotional language replaces evidenceWords like toxic, disgusting, clown show, unacceptable and nightmare are not arguments. They are grenades designed to bypass thinking and trigger a reaction. Emotional language works because angry or disgusted brains do not reason well: when the amygdala is firing the prefrontal cortex takes a back seat, so the certainty that results came from the emotion instead of from the evidence. It is the intellectual equivalent of junk food, immediately satisfying and nutritionally empty. Emotions are not irrelevant, and moral outrage about real injustice is appropriate. The outrage should follow the evidence instead of replacing it. When somebody leads with inflammatory language instead of facts, they are asking you to feel your way to their conclusion.When emotion replaces evidenceOutrage should follow the evidence, not replace it.1The loaded word arrives"Toxic." "Disgusting." "Nightmare."These are not arguments2The reaction fires firstThe amygdala is faster than the argument3Reasoning steps backAn angry brain does not reason wellThe prefrontal cortex takes a back seat4You feel certainAnd the certainty came from the emotioninstead of from anything you checkedLeading with inflammatory language asks you to feel your way to a conclusion.
What happens when emotional language replaces evidenceWords like toxic, disgusting, clown show, unacceptable and nightmare are not arguments. They are grenades designed to bypass thinking and trigger a reaction. Emotional language works because angry or disgusted brains do not reason well: when the amygdala is firing the prefrontal cortex takes a back seat, so the certainty that results came from the emotion instead of from the evidence. It is the intellectual equivalent of junk food, immediately satisfying and nutritionally empty. Emotions are not irrelevant, and moral outrage about real injustice is appropriate. The outrage should follow the evidence instead of replacing it. When somebody leads with inflammatory language instead of facts, they are asking you to feel your way to their conclusion.When emotion replaces evidenceOutrage should follow the evidence, not replace it.1The loaded word arrives"Toxic." "Disgusting." "Nightmare."These are not arguments2The reaction fires firstThe amygdala is faster than the argument3Reasoning steps backAn angry brain does not reason wellThe prefrontal cortex takes a back seat4You feel certainAnd the certainty came from the emotioninstead of from anything you checkedLeading with inflammatory language asks you to feelyour way to a conclusion.

Words like “toxic,” “disgusting,” “clown show,” “unacceptable,” and “nightmare” are not arguments. They are grenades designed to bypass your thinking and trigger a reaction. Emotional language works because angry or disgusted brains do not reason well. When your amygdala is firing, your prefrontal cortex takes a back seat. You feel certain, and the certainty came from emotion. It is the intellectual equivalent of junk food: immediately satisfying, nutritionally empty.

Emotions are not irrelevant. Moral outrage about real injustice is appropriate. The outrage should follow the evidence instead of replacing it. When someone leads with inflammatory language instead of facts, they are asking you to feel your way to their conclusion instead of thinking your way there.

The fix: Replace emotional adjectives with specific descriptions. “This policy is a disaster” becomes “This policy has three specific consequences worth examining.” The second is harder to write and more useful to read.

Why does one bad experience become a universal rule?

“I hired a freelancer and the work was terrible, so freelancers are unreliable.” “My friend’s startup failed, so entrepreneurship is a scam.” “That restaurant gave me food poisoning, so all restaurants in that neighborhood are unsanitary.” Hasty generalizations take limited observations and inflate them into sweeping conclusions. They feel logical because the first observation is real. The food poisoning happened. The freelancer was terrible.

Jumping from one experience to a universal rule ignores every other data point in existence. This is the fallacy behind most stereotypes. A few examples become “all of them,” and you write off a whole category on a sample size of one or two.

The fix: Use qualifying language, “this suggests,” “this pattern indicates,” “in my experience.” If your argument needs “always,” “never,” or “everyone,” you are probably overgeneralizing.

What makes the strawman such a cheap win?

Someone argues that schools should update their curriculum, and the response is “So you want to throw out everything that’s ever been taught?” Someone suggests a business could reduce costs, and the response is “You want to fire everyone and destroy morale?” Strawman arguments misrepresent the original position to make it easier to attack. Instead of engaging with what someone said, you build a weaker, more extreme version and demolish that. It looks like you won the argument. You won an argument with yourself.

The opposite approach, the steel-man, is far more powerful. Present your opponent’s strongest argument before you address it. Defeat the best version of their position and you have accomplished something. Defeat a caricature and you have proven only that you fight easy battles.

The fix: Before responding, restate the argument in the strongest possible terms. If the other person says “that’s not what I meant,” you were probably building a strawman.

How does an argument eat itself?

Someone writes three paragraphs about how a public figure is incompetent and dangerous, then adds a line about their “impressive innovations that benefit humanity.” If the person is incompetent, how are they producing innovations that help people? The argument contradicts itself. Contradictions usually mean emotion is driving the analysis. The writer feels something is wrong, works backward to justify the feeling, and never notices when the justifications conflict.

I catch these in manuscripts all the time, a client arguing two incompatible positions in different chapters without noticing. The fix is always the same. Decide what you believe and build from there instead of collecting every criticism and hoping nobody notices they do not fit together.

The fix: Read your argument as if you disagreed with it. Would the internal logic hold up?

Why do we mistake memorable for representative?

A plane crashes and flying feels dangerous, even though you were safer in the plane than in the car you drove to the airport. A company has one bad quarter and people forget the ten good ones before it. A public figure makes one mistake and a whole career gets reframed around that moment. Our brains overweight recent, dramatic, emotionally charged events and underweight gradual, boring, statistically significant ones. We mistake “easy to remember” for “important” and “vivid” for “representative.”

This availability heuristic is why 24-hour news cycles distort our understanding of risk: the dramatic story gets airtime while the slow, boring trend that matters gets ignored.

The fix: Ask whether a data point is representative of a larger pattern or an outlier that sticks in memory because it is unusual.

What is circular reasoning?

“He makes bad decisions because he’s incompetent, and we know he’s incompetent because he makes bad decisions.” “This book is a classic because everyone reads it, and everyone reads it because it’s a classic.” “Trust me because I’m trustworthy.” Circular reasoning feels logical because it is internally consistent, and internal consistency has nothing to do with truth. You can build a perfectly circular argument about anything. It will sound airtight and prove nothing.

The fix: Trace your reasoning backward. If your evidence for a claim is just a restatement of the claim itself, you are going in circles.

Why can’t consequences decide what is true?

“If this policy doesn’t work, the consequences would be terrible, so it must work.” “If evolution were true, life would be meaningless, so it can’t be true.” “If our strategy is wrong, we’ve wasted two years, so our strategy must be right.” The consequences of a belief do not decide whether it is true. Reality does not rearrange itself around what we would prefer. A policy can have wonderful goals and still fail. A theory can be uncomfortable and still be correct.

The desirability of an outcome and the truth of a claim are independent questions.

The fix: Separate “Is this true?” from “Do I like the implications?”

What do better arguments really look like?

The point of learning the fallacies is to think more clearly about things that matter, not to win debates. Strip the fallacies out of most arguments and what remains is usually more interesting than what you removed. Better criticism is specific instead of personal, contextual instead of absolute, precise instead of emotional, and internally consistent. “This policy’s rapid implementation raises questions about due process” is a real argument. “This policy is a clown show run by idiots” is noise.

Before you write or share anything argumentative, run it through three tests. The mirror test: would you accept this quality of reasoning if it supported a position you opposed? The steel-man test: can you present the strongest version of the opposing argument? The consistency test: do all parts of your argument support each other?

Our capacity for rational discourse is degrading in real time, and every fallacy-laden post that goes viral makes it worse. The challenges ahead, from technology to climate to governance, need the best of human reasoning. We will not think our way through complex problems by screaming past each other with grenades and strawmen. We can do better, and it starts with recognizing these fallacies the next time they try to hijack our thinking, especially when they are our own.

This is the flip side of the echo chambers that keep us certain, part of the same fight against shallow thinking, and the psychology of writing hub covers the wider picture. If you want arguments built to survive inspection, that is the work I do. Hold each one up to the light. The counterfeits show themselves.

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Frequently Asked Questions

Are logical fallacies always wrong?
Not necessarily. Sometimes fallacious reasoning reaches a correct conclusion by accident. But the reasoning process itself is unreliable, making it impossible to distinguish lucky guesses from sound analysis. Even when a fallacious argument lands on the right answer, it weakens your ability to persuade others and to understand why the conclusion is correct.
How can I identify my own biases?
Actively seek disagreement. Find the smartest people who disagree with you and try to understand their reasoning. If you cannot steel-man their position, present it in its strongest form, you probably do not understand the issue well enough. Ask yourself regularly what evidence would change your mind; if you cannot think of anything, bias is driving your conclusions.
What is the difference between logical fallacies and cognitive biases?
Logical fallacies are errors in how arguments are constructed. Cognitive biases are systematic errors in how we think. They overlap: confirmation bias, a cognitive bias, can lead to cherry-picking evidence, a logical fallacy. Think of cognitive biases as the underlying mental processes and logical fallacies as how those processes show up in arguments.
Can emotions ever be valid in arguments?
Yes, when they are relevant. Moral outrage about injustice can be appropriate and important. Emotions become problematic when they replace logical reasoning instead of supplementing it. The key is using emotion to motivate good reasoning, not as a substitute for it, so the outrage follows the evidence instead of standing in for it.
Why do smart people fall for logical fallacies?
Intelligence does not protect against fallacious thinking. Smart people can be better at rationalizing bad arguments and finding sophisticated ways to defend flawed positions. The sharper the mind, the more airtight the rationalization, so spotting fallacies in your own reasoning matters more than spotting them in everyone else’s.
What is the single fastest way to test an argument?
The mirror test: would you accept this quality of reasoning if it supported a position you opposed? If the answer is no, the argument is doing emotional work instead of logical work. Pair it with the steel-man test and the consistency test, and most fallacies reveal themselves before you hit publish.

The book on this: Ridiculous Things People Actually Believe is 298 pages on the reasoning people accept without checking, which is the same failure a loaded word is designed to produce.

📁︎ Critical Thinking

🏷︎ Bias🏷︎ Communication🏷︎ Critical Thinking🏷︎ Philosophy

📝 Disclaimer

The views and opinions expressed in this blog post are solely those of Richard Lowe and are based on personal experience and research. This content is for informational purposes only and should not be construed as professional legal, financial, accounting, or business advice. Always consult with qualified professionals before making important business or legal decisions. Richard Lowe is not a lawyer, accountant, or licensed professional advisor, and this content does not establish any professional relationship.

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