コメント欄にもブックマークにもこの仮説が出ていなかったので。
On Off and Beyond: ○×△の起源は?しかし、よく考えると、○ × もさることながら、なぜ△がその間のレベルなんでしょうか。
私の仮説は、「あれはもともと半円だったのではないか」ということ。しかし、半円をきれいに描くのは以外と難しい。それが「なまった」結果、△になったのではないか。
それよりも、×が「ばってん」になった理由がわからない。こちらは○と違って欧米でも no の意味で使うのだ。
ちなみに△に相当する点数付けは、日本の方が合州国よりむしろ多かったように思う。close but wrong の場合はやはり×という場合が多く、どうしても点数を上げたい場合は、1/2とか-n (n = 減点数)とかというexplicitな書き方をしていた。
X mark - Wikipedia, the free encyclopediaAn x mark (also known as a cross, x, ex, or exmark) is a mark (x, ×, X, ?, ?, ?, ?, ?, etc.) used to indicate the concept of negation (for example "no, this has not been verified" or "no, I don't agree") as well as affirmation (for example in election ballot papers or in x marks the spot). It is often used opposite the checkmark (or the O mark used in Japan).
なお、○がyesの意味であることは、今では英語圏でも知られている模様である。ゲーム機のコントローラーの功績だろうか。
Tick (checkmark) - Wikipedia, the free encyclopediaIn Japan and Korea, an "O Mark" (in the appearance of a circle, unicode symbol "◯"), also known as "丸印" marujirushi, is used instead of a tick to mean 'yes'.
もっとも、ある記号を否定するのに、右から左に線を引くのはかなり一般的で、Unicodeを"NOT"でgrepしただけでこんだけ出てきた。
文字 | コード | 文字名 |
---|---|---|
¬ | U+00AC | NOT SIGN |
͊ | U+034A | COMBINING NOT TILDE ABOVE |
∄ | U+2204 | THERE DOES NOT EXIST |
∉ | U+2209 | NOT AN ELEMENT OF |
∌ | U+220C | DOES NOT CONTAIN AS MEMBER |
∤ | U+2224 | DOES NOT DIVIDE |
∦ | U+2226 | NOT PARALLEL TO |
≁ | U+2241 | NOT TILDE |
≄ | U+2244 | NOT ASYMPTOTICALLY EQUAL TO |
≆ | U+2246 | APPROXIMATELY BUT NOT ACTUALLY EQUAL TO |
≉ | U+2249 | NOT ALMOST EQUAL TO |
≠ | U+2260 | NOT EQUAL TO |
≢ | U+2262 | NOT IDENTICAL TO |
≨ | U+2268 | LESS-THAN BUT NOT EQUAL TO |
≩ | U+2269 | GREATER-THAN BUT NOT EQUAL TO |
≭ | U+226D | NOT EQUIVALENT TO |
≮ | U+226E | NOT LESS-THAN |
≯ | U+226F | NOT GREATER-THAN |
⊀ | U+2280 | DOES NOT PRECEDE |
⊁ | U+2281 | DOES NOT SUCCEED |
⊄ | U+2284 | NOT A SUBSET OF |
⊅ | U+2285 | NOT A SUPERSET OF |
⊊ | U+228A | SUBSET OF WITH NOT EQUAL TO |
⊋ | U+228B | SUPERSET OF WITH NOT EQUAL TO |
⊬ | U+22AC | DOES NOT PROVE |
⊭ | U+22AD | NOT TRUE |
⊮ | U+22AE | DOES NOT FORCE |
⋠ | U+22E0 | DOES NOT PRECEDE OR EQUAL |
⋡ | U+22E1 | DOES NOT SUCCEED OR EQUAL |
⋢ | U+22E2 | NOT SQUARE IMAGE OF OR EQUAL TO |
⋣ | U+22E3 | NOT SQUARE ORIGINAL OF OR EQUAL TO |
⋤ | U+22E4 | SQUARE IMAGE OF OR NOT EQUAL TO |
⋥ | U+22E5 | SQUARE ORIGINAL OF OR NOT EQUAL TO |
⋦ | U+22E6 | LESS-THAN BUT NOT EQUIVALENT TO |
⋧ | U+22E7 | GREATER-THAN BUT NOT EQUIVALENT TO |
⋨ | U+22E8 | PRECEDES BUT NOT EQUIVALENT TO |
⋩ | U+22E9 | SUCCEEDS BUT NOT EQUIVALENT TO |
⋪ | U+22EA | NOT NORMAL SUBGROUP OF |
⋫ | U+22EB | DOES NOT CONTAIN AS NORMAL SUBGROUP |
⋬ | U+22EC | NOT NORMAL SUBGROUP OF OR EQUAL TO |
⋭ | U+22ED | DOES NOT CONTAIN AS NORMAL SUBGROUP OR EQUAL |
⌐ | U+2310 | REVERSED NOT SIGN |
⌙ | U+2319 | TURNED NOT SIGN |
⍯ | U+236F | APL FUNCTIONAL SYMBOL QUAD NOT EQUAL |
⍻ | U+237B | NOT CHECK MARK |
⨔ | U+2A14 | LINE INTEGRATION NOT INCLUDING THE POLE |
⪇ | U+2A87 | LESS-THAN AND SINGLE-LINE NOT EQUAL TO |
⪈ | U+2A88 | GREATER-THAN AND SINGLE-LINE NOT EQUAL TO |
⪉ | U+2A89 | LESS-THAN AND NOT APPROXIMATE |
⪊ | U+2A8A | GREATER-THAN AND NOT APPROXIMATE |
⪱ | U+2AB1 | PRECEDES ABOVE SINGLE-LINE NOT EQUAL TO |
⪲ | U+2AB2 | SUCCEEDS ABOVE SINGLE-LINE NOT EQUAL TO |
⪵ | U+2AB5 | PRECEDES ABOVE NOT EQUAL TO |
⪶ | U+2AB6 | SUCCEEDS ABOVE NOT EQUAL TO |
⪹ | U+2AB9 | PRECEDES ABOVE NOT ALMOST EQUAL TO |
⪺ | U+2ABA | SUCCEEDS ABOVE NOT ALMOST EQUAL TO |
⫋ | U+2ACB | SUBSET OF ABOVE NOT EQUAL TO |
⫌ | U+2ACC | SUPERSET OF ABOVE NOT EQUAL TO |
⫬ | U+2AEC | DOUBLE STROKE NOT SIGN |
⫭ | U+2AED | REVERSED DOUBLE STROKE NOT SIGN |
⫮ | U+2AEE | DOES NOT DIVIDE WITH REVERSED NEGATION SLASH |
⽆ | U+2F46 | KANGXI RADICAL NOT |
⽏ | U+2F4F | KANGXI RADICAL DO NOT |
ꆊ | U+A18A | YI SYLLABLE NOT |
¬ | U+FFE2 | FULLWIDTH NOT SIGN |
だとしたら、×(ばってん)単にstrike outを強調したということなのかも知れない。
Dan the Pictographer
P.S. そういえば Unicode にははなまるがない。ケータイ絵文字にはあったっけ?
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