Debates Master
Relevance FallacyArgumentum Ad Hominem Tu QuoqueRhetorical Impact: 8/10

Tu Quoque (Appeal to Hypocrisy)

Discrediting an opponent's valid argument or ethical position simply by claiming that they fail to act in accordance with their own advice.

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Formal Logic Architecture

Person A argues that behavior X is harmful. Person B points out that Person A previously engaged in behavior X. Therefore, behavior X is asserted not to be harmful.

Real-World Tournament Debate Dialogue Example

Debater A: 'Smoking tobacco causes severe cardiovascular disease and lung cancer.'

Debater B: 'Why should we listen to you? You were smoking a cigarette outside the auditorium twenty minutes ago!'

Adjudication Breakdown: Debater A's personal smoking habit does not invalidate the medical science demonstrating that tobacco causes cancer.

3 Championship Counter-Tactics

  • Distinguish personal hypocrisy from objective truth: 'A hypocrite can still state an incontrovertible medical fact.'
  • Reiterate the factual warrant: 'The medical reality of lung disease remains identical regardless of my personal vices.'

Explore More Logical Fallacies

Relevance

Straw Man Fallacy

Misrepresenting, oversimplifying, or caricaturing an opponent's argument to make it easier to attack, refute, and dismiss, while ignoring their actual claims.

Relevance

Ad Hominem (Personal Attack)

Attacking the character, motives, intelligence, background, or identity of the person making an argument rather than evaluating the empirical facts and logical warrants of the argument itself.

Presumption

Slippery Slope Fallacy

Asserting without evidentiary proof that a relatively modest initial action or policy step will trigger an inevitable, catastrophic chain reaction of extreme consequences.