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Red Herring Fallacy: How to Spot a Change of Subject

A red herring is an irrelevant point introduced to divert attention from the issue under discussion. This guide explains how it differs from a straw man and an ad hominem, shows how it appears in debates and interviews, and gives a method for returning to the question without sounding defensive.

Updated 2026-11-04

What is the red herring fallacy?

A red herring is a point that is irrelevant to the issue being argued but is introduced as if it bore on it. It leads the discussion down a side path. The term comes from the idea of a strong-smelling fish used to distract hunting dogs, though the etymology is disputed and is not needed to understand the fallacy.

The new point may be true, interesting, or even important. It is a fallacy because it does not address the claim in question. The effect is to avoid a hard point, to run down the clock or to shift the argument to ground where the speaker is stronger.

The pattern to look for

It tends to follow a predictable sequence.

  1. Topic A is under discussion.
  2. Someone raises topic B, which is linked in a loose or emotional way.
  3. The discussion moves to B.
  4. A is never resolved.

Examples in everyday talk and debate

The same error appears in different settings. These examples show the pattern and what is missing from each.

Red herrings and the question they dodge
QuestionReplyWhy it is a red herring
“Should the city fund more bus lanes?”“What about all the potholes?”A different transport issue; does not address bus lanes.
“Did the company mislead customers?”“Look at how many jobs we created.”Jobs do not answer whether customers were misled.
“Why was the report late?”“Everyone knows we are short of staff.”Explains a condition but does not answer why this report was late or what will change.
“Is this policy fair?”“The opposition’s policy is far worse.”Whataboutism: a comparison that avoids the question.
“Should we ban the product?”“Think of the children who rely on it.”An emotional point that is unrelated to the safety data.
“Do you agree with the claim?”“That is a very interesting question. Let me tell you about my work.”A pivot to a prepared message.

Why it is persuasive

Conversations are fluid, and a new point can feel like a natural follow-up. Many listeners will not notice that the original question was dropped. A red herring is especially effective if it touches something emotional or timely, because people follow the stronger feeling.

It is also hard to challenge. If you object, you may seem to be refusing to discuss an important issue. A speaker who raises a red herring can then present you as narrow-minded.

Watch it explained

A short video can make the pattern easier to spot the next time you hear it.

Watch: Red Herring: Critical Thinking Fallacies (Wireless Philosophy). How a change of subject passes for an answer.

When it is not a fallacy

Not every change of topic is a fallacy. Sometimes a point that looks like a tangent is relevant: it may reveal a hidden assumption, or it may be the real issue under the stated one. A good discussion sometimes needs to explore related questions, especially if the two sides disagree about what the question is. The test is whether the new point actually bears on the conclusion.

Context matters too. In a free-flowing discussion, a tangent can be enjoyable and harmless. In a structured debate, where time is limited and the motion is fixed, a tangent is costly.

How to respond

The aim is to return to the question without making it a fight.

  1. Acknowledge the new point in a few words: “That is an important issue.”
  2. Say why it is separate: “It does not change whether the policy is fair.”
  3. Restate the original question.
  4. Offer to return to the side issue later: “Happy to come back to that.”
  5. If the speaker repeats the move, ask the moderator to bring the discussion back to the motion.

Using this in a debate

In a judged round, every speech is supposed to bear on the motion. Teams that wander lose marks for relevance, and a rebuttal that fails to answer the argument will be counted as dropped. If an opponent introduces a red herring, say briefly that it is off-topic and that their original argument remains unanswered. If they have raised something related but not on point, a short response is enough: “Even if that is true, it does not answer our argument that…”

Moderators of public debates face this constantly. A good moderator restates the question and asks the speaker to answer it. If you moderate, keep a list of the questions asked and tick them off as they are answered.

Red herring, straw man, or ad hominem?

These three are often confused because all of them dodge the argument. The difference is what they do to it. A straw man changes your claim into a weaker one and answers that. An ad hominem attacks you and ignores the claim. A red herring leaves your claim alone and starts a different conversation. If the reply addresses a version of your point, however distorted, it is a straw man. If it addresses you, it is ad hominem. If it addresses something else entirely, it is a red herring. Naming the right one helps you answer precisely: for a red herring, the fix is to restore the question.

Related fallacies

These are easy to confuse with this one, or often appear alongside it.

  • Whataboutism: “What about X?” used to deflect criticism.
  • Straw man: distorts your claim instead of ignoring it.
  • Ad hominem: attacks the speaker, not the claim.
  • Non sequitur: a conclusion that does not follow, without a deliberate distraction.

Frequently asked questions

What is a red herring fallacy?

It is the introduction of an irrelevant point that diverts attention from the issue being discussed, so the original question goes unanswered.

What is an example of a red herring?

Asked whether a company misled customers, the spokesperson says, “Look at how many jobs we have created.” The reply does not address the question.

What is the difference between a red herring and a straw man?

A straw man distorts your argument and attacks the distortion. A red herring ignores your argument and changes the subject.

Is whataboutism a red herring?

Often, yes. “What about X?” shifts attention to another wrong without answering the original criticism, though it can be fair when it points to a real inconsistency in a principle.

How do you respond to a red herring?

Briefly acknowledge the new point, explain why it is separate, restate the original question, and ask for an answer to it.

Sources and further reading