ignoratio elenchi(redirected from Irrelevant thesis)
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ignoratio elenchi(ˌɪɡnəˈreɪʃɪəʊ ɪˈlɛŋkaɪ)
1. (Logic) a purported refutation of a proposition that does not in fact prove it false but merely establishes a related but strictly irrelevant proposition
2. (Logic) the fallacy of arguing in this way
[Latin: an ignorance of proof, translating Greek elenchou agnoia]
ig•no•ra•ti•o e•len•chi(ˌɪg nəˈreɪ ʃiˌoʊ ɪˈlɛŋ kaɪ, -ki)
a fallacy in logic of offering proof irrelevant to the proposition in question.
[1580–90; < Latin ignōrātiō elenchī literally, ignorance of the refutation]