sequitur
論理的帰結
解説 Definition
論理的に前提から導かれる結論。「non sequitur（論理の飛躍）」の表現で多く使われる。
A sequitur is a statement or result that follows logically from something said before. It is used in formal or academic contexts when talking about reasoning and argument. You may also see it in the phrase "non sequitur," which means something that does not follow logically.
覚え方のコツ Memory Tip
sequence（順序）や sequel（続編）を知っていると、sequitur も「前のものに続いて出てくるもの」と捉えやすいです。そこから「前提にきちんと続いて出てくる結論」＝論理的帰結、と覚えると定着します。単独ではあまり見かけず、まずは non sequitur で覚えるのが実用的で、「話がつながっていない」「結論が前提から follow していない」という感覚を持つと逆に本来の意味も押さえやすいです。
Connect it to `sequence` or `sequel`, both of which carry the idea of something following. That makes `sequitur` easier to remember as something that properly follows from what came before. It is especially useful to learn it through `non sequitur`, which highlights the idea of a broken connection.
例文
His conclusion was a logical sequitur that followed naturally from the evidence.
彼の結論は証拠から自然に導かれる論理的帰結だった。
The comedian's act relied heavily on non sequitur humor to get laughs.
そのコメディアンの芸は笑いを取るために論理の飛躍に大きく頼っていた。
In formal logic, a valid sequitur means the conclusion necessarily follows the premises.
形式論理学において、有効な帰結とは結論が前提から必然的に導かれることを意味する。
sequitur の類義語・関連語
sequitur の語源・成り立ち Etymology
sequitur はラテン語 sequitur「それは続いて起こる・従う」に由来し、語幹 sequ- は「従う」を表します。sequence や sequel も同根で、前の事柄のあとに当然ついてくるものだから「論理的帰結」なのだと見えてきます。
Sequitur comes directly from Latin sequitur, meaning "it follows," from a root meaning "follow." It belongs to the same family as sequence and sequel. The idea is that something comes after something else in a natural or logical way, which led to its use for a logical conclusion.
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