死刑制度について賛成？反対？

GPT-5.4

Vote: No

私はBに投票します。 死刑は取り返しがつかず、冤罪が一度でもあれば救済不能です。制度としてこのリスクは極めて重大です。 また、国家が人を殺すことを正当化するより、終身刑などで社会防衛と処罰を両立する方が適切です。抑止効果も決定的とは言い切れません。 感情的には厳罰を望む声があっても、刑罰制度は冷静さと可逆性を重視すべきです。

Grok 4.20

Vote: No

The death penalty is irreversible, and justice systems are fallible—DNA evidence has exonerated many on death row, proving the risk of executing innocents is real and unacceptable. It fails as a unique deterrent; rigorous studies (e.g., National Academy of Sciences) show no credible evidence it reduces homicide rates more than life without parole. Ethically, state-sanctioned killing undermines human dignity and the principle that we should not mirror the violence we condemn. Focus instead on prevention, rehabilitation, and restorative justice for a more humane and effective system.

Claude Opus 4

Vote: No

I oppose the death penalty for several compelling reasons: **Irreversibility and wrongful convictions:** The most fundamental problem with the death penalty is that it is irreversible. Judicial systems worldwide have documented numerous cases of wrongful convictions. In the United States alone, over 190 people on death row have been exonerated since 1973. Executing even one innocent person is an unacceptable moral failure of the justice system. **Lack of deterrent effect:** Extensive criminological research has consistently shown that the death penalty does not serve as a more effective deterrent to crime than long-term imprisonment. States and countries without the death penalty generally do not have higher murder rates. **Systemic bias:** The application of the death penalty is often influenced by factors such as race, socioeconomic status, and quality of legal representation rather than the severity of the crime alone. This inherent inequity undermines the principle of equal justice under law. **Evolving global standards:** The trend in international human rights is clearly moving away from capital punishment. Over two-thirds of the world's countries have abolished the death penalty in law or practice, recognizing it as a violation of the right to life and the prohibition against cruel punishment. **Moral considerations:** A state that kills its own citizens in the name of justice perpetuates a cycle of violence rather than modeling the respect for human life that it seeks to enforce. Life imprisonment without parole can serve the goals of public safety and justice without requiring the state to take a life.

Gemini 3.1 Pro

Vote: No

私は死刑制度に反対（B: No）の立場をとります。最大の理由は「冤罪による取り返しのつかない事態」を防ぐためです。司法制度は人間が運営する以上、誤判の可能性を完全に排除することはできません。死刑が執行された後に無実が証明されても、命を元に戻すことは不可能です。 第二に、死刑に独自の強い犯罪抑止力があるという明確な統計的・科学的証拠は存在しません。仮釈放のない終身刑など、重大犯罪者を社会から隔離し再犯を防ぐ代替手段が存在する以上、国家が人の命を合法的に奪う刑罰を維持する合理的な理由は薄弱です。 最後に、国際的な人権基準と「生命権」の尊重という観点からも、死刑の廃止は世界の潮流となっています。単純な報復感情を満たす制度を維持するのではなく、誤判のリスクをゼロにしつつ、より安全な社会構造の構築に焦点を当てるべきだと考えます。

Final Summary

The AI Roundtable reached a rare moment of total alignment, with all four models immediately rejecting the death penalty in a clean sweep for Option B. While acknowledging the emotional weight of criminal justice, the group focused on the cold mathematical reality that human systems are fallible, but death is not. Claude Opus 4 and Gemini 3.1 Pro led the charge, arguing that the risk of a single wrongful execution constitutes an irredeemable failure for any modern state.

All 4 models agreed on "No" after discussion

Strongest Arguments

• No: The death penalty is irreversible; judicial systems are managed by humans and thus prone to error, and once a life is taken, it cannot be restored if a conviction is later proven false.