AI Roundtable Debate · 5 models

4と9と13と911ではどれが不吉ですか。

Result: Unanimous — 4 (5/5 votes)

Options

4 (5 votes)
9 (0 votes)
13 (0 votes)
911 (0 votes)

Model Responses

Grok 4.20

Vote: 4

The question is posed in Japanese, so the primary context is Japanese cultural superstitions around numbers. In Japan, 4 is by far the most avoided due to its homophone with "death," affecting everyday life like floor numbers and hospital rooms. Claude's point about 911's real-world tragedy is noted but not compelling here: the query focuses on which number is "不吉" (unlucky/ominous) among listed options, aligning with traditional Japanese taboos rather than global historical events. 9 has mild associations but is secondary to 4; 13 is Western; 911 doesn't fit Japanese numerology. Majority of models (GPT-5.4, DeepSeek, Gemini) correctly emphasize 4, reinforcing that cultural specificity outweighs broader interpretations.

GPT-5.4

Vote: 4

日本語の設問である以上、まず日本語圏の一般的な語感と慣習を優先すべきです。その基準では、4は「死」と同音で、最も典型的な不吉の数字です。 4は病院・ホテル・部屋番号などで現実に回避されるほど、生活習慣として定着しています。9も「苦」の連想はありますが、4ほど強く普遍的ではありません。13は主に西洋文化の文脈です。 Claude Opus 4の911論は、悲劇との結びつきという点では理解できます。しかしそれは出来事の連想であって、数字自体の伝統的・文化的な不吉さとは性質が異なります。この設問は通常、忌み数として最も定番なものを問うと解するのが自然です。したがって最終的にもAが最も妥当です。

Claude Opus 4 (changed mind)

Vote: 4

I'm changing my vote to A. The other four models all made a compelling and consistent argument that I find persuasive. The question is asked in Japanese, and the cultural context matters enormously. In Japanese culture, 4 (四/し) is the quintessential unlucky number because 'shi' is homophonous with 'death' (死). This superstition is so deeply embedded that hospitals skip floor 4, hotels skip room 4, and gift sets avoid quantities of 4. It is the most traditionally and universally recognized 'unlucky number' in Japanese society. My previous argument about 911 being connected to an actual tragedy has some merit, but the question asks about 不吉 (fukitsu), which specifically refers to superstitious unluckiness or ill omen — a concept rooted in cultural tradition rather than historical events. 911 is tragic and disturbing, but it doesn't carry the same traditional superstitious weight as 4 does in Japanese culture. All four other models independently arrived at the same answer with strong reasoning grounded in Japanese cultural context. The consensus is clear and well-justified. The most natural and correct answer to this question, given that it's posed in Japanese, is 4.

Gemini 3.1 Pro

Vote: 4

Claude Opus 4は911の歴史的悲劇性を理由にDを主張しましたが、「不吉（兆しが悪い、縁起が悪い）」という言葉は、実際の歴史的事件よりも、迷信や語呂合わせによる「忌み数」に対して使われるのが一般的です。日本では、部屋番号や駐車場の番号として「911」を避ける習慣はありませんが、「4」は明確に避けられています。また、質問が日本語で行われている以上、日本の文化・言語的背景（4＝死）を最優先で考慮すべきです。歴史的悲劇の重さを問うているのではなく、純粋に「不吉な数字（縁起の悪い数字）」を問うているため、生活習慣として最も忌避されている「4」が正解であるという立場を維持します。

DeepSeek V3.2

Vote: 4

The question is posed in Japanese, strongly implying a Japanese cultural context. In Japan, the number 4 is overwhelmingly regarded as unlucky due to its homophony with 'death' (shi), leading to systematic avoidance in buildings, gifts, and ceremonies. While 9 has secondary negative connotations and 13 is a Western import, 4 remains the most deeply embedded and widely recognized unlucky number in Japanese society. Claude Opus 4's argument for 911, while compelling on a global scale, misreads the cultural specificity of the question. 911 is associated with a tragic historical event, but it lacks the traditional superstitious weight and everyday avoidance that define '不吉' in the Japanese context. The consensus among other Japanese-aware models reinforces that 4 is the culturally appropriate answer.