Tu quoque //, (Latin for "you, too" or "you, also") or the appeal to hypocrisy, is a logical fallacy that attempts to discredit the opponent's position by asserting the opponent's failure to act consistently in accordance with that position; it attempts to show that a criticism or objection applies equally to the person making it. This dismisses someone's point of view based on criticism of the person's inconsistency, and not the position presented, whereas a person's inconsistency should not discredit their position. Thus, it is a form of the ad hominem argument. To clarify, although the person being attacked might indeed be acting inconsistently or hypocritically, this does not invalidate his argument.
The International Criminal Tribunal for the former Yugoslavia heard several cases in which the accused tried to justify their crimes by insisting that the opposing side had also committed such crimes. The tribunal rejected this argument, holding that tu quoque, from the basis of international humanitarian law, is completely irrelevant.
- Bluedorn, Nathaniel (2002, 2003). The Fallacy Detective. p. 54. ISBN 0-9745315-0-2.
- Logical Fallacy: Tu Quoque
- Judgment of the Trial Chamber in Case Kupreškić et al.. (January 2000), para. 765.
- Judgment of the Trial Chamber in Case Kunarac et al.. (February 2001), para. 580.
- Judgment of the Appeals Chamber in Case Kunarac et al.. (January 2002), para. 87.
- Judgment of the Trial Chamber in Case Limaj et al. (November 2005), para. 193.