What's wrong with "You're just a kid, so your opinion doesn't count"?
Someone makes a good argument about recycling. Instead of responding to their points, you say "You're too young to understand." You attacked the PERSON, not their ARGUMENT. This is called an ad hominem fallacy.
AD HOMINEM (Latin: "to the person") = attacking the person making the argument instead of addressing the argument itself. It's a distraction tactic that avoids engaging with ideas!
Whether someone is young, old, rich, poor, famous, or unknown is IRRELEVANT to whether their argument is TRUE! A good argument stands on its own logic and evidence, not on who said it.
• "You're not a scientist, so you can't comment on climate"
• "She's biased because she works there"
• "He changed his mind before, so he's unreliable"
• "That website has ads, so it's not trustworthy"
Attack IDEAS, not people!
EXCEPTION: Expertise can matter for complex topics! "I'm not a doctor" is relevant for medical diagnosis. But even then, focus on the REASONING: Why is this doctor's conclusion sound? What's the evidence?
Ad hominem is attacking the person instead of addressing their argument - it's a logical fallacy!
What it looks like:
• Dismissing ideas based on age, appearance, background
• Questioning motives instead of evidence
• Bringing up past mistakes unrelated to current argument
• Using insults or labels to avoid engagement
Why it's wrong:
• Truth isn't determined by WHO says it
• It avoids addressing the actual argument
• It shuts down productive discussion
• Anyone can have a good idea or make a valid point
How to respond:
• Focus on the ARGUMENT, not the person
• Ask: "Even if that's true about them, is their reasoning sound?"
• Evaluate evidence and logic, not credentials
Critical thinking skill: Always separate the messenger from the message. Judge ideas on their merits!
🤔 Which thinking lens(es) did you use?
Select all the lenses you used:
🌱 A Small Everyday Story
In a discussion, someone presents an argument.
Another person responds: "You always say that."
The first person waits.
The argument itself remains unaddressed.
Something shifted, but nothing was answered.
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🧠 Thinking habits this builds:
- Separating the messenger from the message
- Noticing when discourse shifts from ideas to identity
- Recognizing deflection as a signal, not a rebuttal
- Maintaining focus on reasoning even under personal attack
🌿 Behaviors you may notice (and reinforce):
- Calling out fallacies without hostility ("That's about me, not my point")
- Redirecting conversations back to the argument
- Catching themselves before using ad hominem
- Spotting this pattern in media, politics, or peer conflicts
How to reinforce: Name the skill, not just the catch. "You noticed they changed the subject from your argument to you."
🔄 When ideas are still forming:
Some learners may use "that's ad hominem" as a weapon rather than a tool for clarity, or struggle to distinguish between relevant credibility questions and irrelevant personal attacks.
Helpful response: Explore the grey zone together. When IS someone's identity relevant? (A doctor's opinion on medicine vs. their opinion on cars.)
🔬 If you want to go deeper:
- Watch political debates and count ad hominem instances
- Role-play: respond to an argument with ad hominem, then properly
- Explore: When DO credentials matter? When don't they?
Key concepts (for adults): Logical fallacies, argument vs arguer, genetic fallacy, poisoning the well, appeal to authority, media literacy.