In the form "you must accept either A, or B" — here A and B are propositions each leading to some further conclusion — and applied incorrectly, the dilemma constitutes a false dichotomy, that is, a fallacy. Traditional usage distinguished the dilemma as a "horned syllogism" from the sophism that attracted the Latin name "cornutus". The original use of the word "horns" in English has been attributed to Nicholas Udall in his 1548 book "Paraphrases", translating from the Latin term "cornuta interrogatio".