エスペラント語を、英語の代わりに全世界で導入され、上手く普及しました。そのとき、日本の大学入試の｢英語｣が｢エスペラント語｣と変わることが予想されます。試験内容、難易度が変わりますか。また、どのように変わると思いますか。

Sonar Pro

Vote: Yes

The query assumes Esperanto replaces English worldwide and successfully spreads, leading Japan's university entrance exam to switch from 'English' to 'Esperanto'. The core question is whether this change would alter the **exam content** and **difficulty**. **Yes, changes are inevitable.** Current Japanese university entrance exams (e.g., National Center Test, EJU for internationals) test English proficiency via listening, grammar/vocabulary, and reading comprehension, calibrated to match domestic students' levels and national standards.[2][5] These assess complex, idiomatic natural language skills. Esperanto, an **artificial language** designed for simplicity (regular grammar, no exceptions, smaller vocabulary), fundamentally differs from English's irregularities and vast lexicon. Exams would adapt to Esperanto's traits: - **Content**: Shift to Esperanto-specific passages, vocabulary, and structures; possibly simplified listening/reading due to phonetic regularity. - **Difficulty**: Likely **decreases** overall, as Esperanto is easier to learn/master (e.g., 1/10th the time vs. English per proponents), requiring less emphasis on irregularities. Tests might raise complexity via advanced topics or speed to maintain selectivity.[1][2] Exams evolve with language purpose: English tests communication for global use; Esperanto would test similar proficiency but via easier medium, changing both form and rigor. No realistic scenario keeps content/difficulty identical.

GPT-5.4

Vote: Yes

英語がエスペラント語に置き換われば、試験内容も難易度もかなり変わる可能性が高いです。 最大の理由は、エスペラント語が英語より文法・綴り・発音の対応関係で規則的だからです。不規則変化や例外が少なく、語形成も接辞で体系的に学べるため、基礎文法や語彙の習得は今の英語より容易になります。 その結果、単純な文法知識や例外暗記を問う問題は減りやすいです。代わりに、限られた規則を使って正確に読解・作文できるか、接辞から未知語の意味を推測できるか、といった運用力中心の出題に寄るでしょう。 難易度については、初級〜中級レベルまでは下がる可能性が高いです。平均点は上がりやすく、受験生間の差がつきにくくなるので、大学側は長文読解、要約、自由英作文、リスニングや実用的なコミュニケーション課題を増やして選抜性を確保すると考えられます。 つまり、『外国語としての負担』は軽くなる一方で、『実際に使いこなす力』を測る方向へ試験が変わるはずです。したがって答えはYesです。

Grok 4.1 Fast

Vote: Yes

Esperanto is a constructed language with highly regular grammar, phonetic spelling, no irregular verbs or exceptions, and a compact vocabulary derived from European roots, making it far simpler than English. Japanese university entrance exams test advanced English skills like complex reading comprehension, idioms, and nuanced grammar—content inherently tied to English's irregularities. Switching to Esperanto would require rewriting exams with Esperanto texts, grammar rules, and vocabulary, fundamentally altering content. Passages, questions, and answer choices would use Esperanto's structure, not English's. Difficulty would also change: Esperanto's simplicity means native Japanese speakers (analytic language users) could achieve fluency faster, so exams might lower basic hurdles but raise selectivity via longer texts, abstract topics, or cultural nuances in Esperanto literature. Exams adapt to maintain discrimination power, but the baseline shifts due to linguistic differences. Thus, both content and difficulty inevitably change in this global adoption scenario.

Kimi K2.5

Vote: Yes

もしエスペラント語が英語に代わって全世界で普及した場合、日本の大学入試の試験内容は必然的に変化します。まず、出題言語自体が英語からエスペラント語に変更されるため、リスニング・リーディングの文章や出題形式は完全に入れ替わります。 難易度については、エスペラント語は不規則変化がなく、発音と綴りが一致し、文法が論理的に設計されているため、英語より習得しやすい言語です。したがって、同じレベルの到達目標を設定した場合、試験の難易度は低下するか、より高度な応用問題が出題されるようになる可能性があります。 また、受験生の学習負担は変わります。英語のような不規則なスペルや慣用句の暗記が減り、論理的な文法構造の理解が重視される傾向が生まれるでしょう。試験の評価軸も「混乱しがちな例外処理能力」から「論理的な言語運用能力」へシフトします。

Claude Opus 4.6

Vote: Yes

Yes, the exam content and difficulty would change significantly if Esperanto replaced English in Japanese university entrance exams. Here are several compelling reasons: **1. Esperanto's regular grammar drastically reduces grammatical difficulty.** Esperanto was designed as an easy-to-learn constructed language. It has no irregular verbs, no irregular plurals, and consistent word formation rules. English exams currently test students on irregular forms, idiomatic expressions, and complex grammatical exceptions — much of this testing material would simply disappear. **2. Pronunciation and spelling are perfectly regular.** Esperanto has a one-to-one correspondence between spelling and pronunciation. This eliminates the need for phonetics-based questions and drastically simplifies listening comprehension sections, since there are no silent letters, irregular stress patterns, or confusing homophones. **3. Vocabulary testing would shift fundamentally.** Esperanto uses an agglutinative word-building system with prefixes and suffixes (e.g., mal-, -ino, -ejo). Once students learn the root words and affixes, they can derive thousands of words logically. This means vocabulary sections would need to test different skills — perhaps morphological analysis rather than rote memorization of unrelated words. **4. Reading comprehension difficulty would decrease.** Since Esperanto lacks the cultural idioms, historical baggage, and ambiguity inherent in natural languages like English, reading passages would be more straightforward. The exam would likely need to compensate by using more complex content or longer passages to maintain differentiation among test-takers. **5. The overall difficulty level would likely decrease.** Studies suggest Esperanto can be learned in roughly 1/5 to 1/10 of the time needed for English. Exam designers would face a challenge: if the language itself is easier, they would need to either raise the passing threshold, add more advanced content areas, or shift focus toward productive skills (writing, speaking) to maintain the exam's discriminatory power. **6. Cultural content questions would change.** Current English exams often include culturally specific content related to English-speaking countries. Esperanto, being internationally neutral, would likely shift toward universal or cross-cultural topics. In summary, both the content and difficulty would change substantially — the language's design as a simple, regular, and learnable system fundamentally alters what can be meaningfully tested.

Gemini 3.1 Pro

Vote: Yes

エスペラント語は国際補助語として、文法が完全に規則的であり、不規則動詞や例外的な発音が存在しないよう人工的に設計された言語です。そのため、現在の英語入試で問われるような「重箱の隅をつつく」ような文法の例外や、複雑なイディオムの暗記といった試験内容は意味を持たなくなり、劇的に減少するでしょう。 基礎的な語学力の習得が英語に比べて格段に容易になるため、受験生間の差をつけるために試験の性質が変わります。単なる文法や単語の知識を問う問題から、長文読解を通じた論理的思考力の測定や、自分の意見を正確に伝えるエッセイライティング（自由英作文ならぬ自由エスペラント作文）、さらにはスピーキングやリスニングといった「言語の運用能力」を深く問う内容へとシフトします。 難易度については、言語自体の習得難易度は大幅に下がりますが、試験としては「言語を使って何が言えるか、どう論理的に思考できるか」という高次元の能力が求められるようになるため、単純な暗記ゲーではなく、より本質的な知力を問う難しさに変化すると考えられます。

Final Summary

The AI Roundtable reached a swift, unanimous consensus that swapping English for Esperanto would trigger a radical overhaul of the Japanese university entrance exam system. Models like Claude Opus 4.6 and Gemini 3.1 Pro pointed out that because Esperanto lacks the chaotic irregularities of English, the traditional 'memorization game' of testing obscure grammar exceptions would be replaced by a focus on high-level logical reasoning and communication.

All 6 models agreed on "Yes" after discussion

Strongest Arguments

• Yes: The transition from a natural language defined by historical baggage and exceptions to a regular, constructed one would shift the exam's focus from the rote memorization of irregularities to a more rigorous test of logical operation and actual linguistic application.