4 ms·Tu quoque is not a logical fallacy. There's no logical step that's violated. It's an informal fallacy.by speakeron 8y agoTu quoque is not a logical fallacy. There's no logical step that's violated. It's an informal fallacy.davesque 8y agoTechnically, yes. It's an informal logical fallacy. The point is that it's a pretty ineffective means of advancing the discussion.hueving 8y agoRight FTA: it's an "informal logical fallacy.