Definition
The Tu Quoque fallacy (Latin for “you too”) is an attempt to justify a wrong action or an invalid argument by pointing out that someone else (often the opponent) has done the same thing. It is a specific form of the Ad Hominem Fallacy that focuses on perceived hypocrisy rather than the logic of the argument itself.
Why It Matters
This fallacy is used to deflect criticism by pointing at the opponent’s hypocrisy. Recognizing it is essential for maintaining the focus on the argument itself rather than the character of the messenger, preventing the derailment of productive debate.
Core Concepts
- Hypocrisy as a Shield: Using the opponent’s behavior to deflect criticism of one’s own position. “My evidence may be bad, but so is yours.”
- Diversionary Tactic: Redirecting the focus from the validity of a claim to the character or consistency of the person making it.
- Alternative Medicine Defense: Frequently used by proponents of unproven therapies who argue that mainstream medicine also lacks evidence for some treatments, as if this justifies the lack of evidence for their own.
- False Equivalence: Often involves a false premise that the “badness” or “lack of evidence” on both sides is equal, when it is usually not.