Linguistic

Ad Hominem

What it is

Attacking the person making the argument rather than the argument itself.

How it works

By discrediting the speaker through personal attacks, the persuader shifts focus from the validity of the argument to the character, motives, or circumstances of the person presenting it. The audience conflates the messenger with the message.

Real-world examples

  • "You can't trust his economic plan, he went bankrupt ten years ago."
  • Dismissing a scientist's findings because of their political affiliations.
  • "Of course she'd say that, she works for the competition."

Ethical guidelines

  • Address arguments on their merits, not the character of the speaker.
  • Personal credibility is relevant only when the claim depends on testimony.
  • Separate factual disagreements from personal animosity.

How to defend against it

  • Redirect: "Let's focus on the argument itself, not who is making it."
  • Point out the logical fallacy directly.
  • Evaluate whether the personal information is actually relevant to the claim.

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