non-sequitur完全不相干;推论掉效;无推断式
fallacy of non sequitur没有推理的谬误
N-VAR（有变体名词） A non sequitur is a statement, remark, or conclusion that does not follow naturally or logically from what has just been said. 不合逻辑的推论 [正式]
Had she missed something important, or was this just a non sequitur?
她是漏掉了什么重要的东西，还是瞎猜呢？