トロッコ問題をかんがえて。ほっとけば５人の年配の作業員の犠牲になります。切り替えたら将来ある１人の子供を犠牲にすることになり、あなたは殺人者として問われます。

GPT-5.4

Vote: ５人の犠牲

Aを選びます。 自分が積極的に切り替えることで、1人の子供の死を直接引き起こし、しかも自分が加害者として責任を負う点が決定的です。結果だけでなく、意図的に無実の1人を犠牲にする行為そのものに強い倫理的問題があります。 何もしない場合に5人が助からないのは悲劇ですが、それは既に進行している危険によるものです。切り替えは、その危険を新たに別の1人へ向ける能動的な殺害に近いです。 この設問では人数比較だけでなく、「子供を意図的に犠牲にすること」と「自分が殺人者として問われること」が明示されています。そこを重く見るなら、切り替えない判断が最も筋が通っています。

Gemini 3.1 Pro

Vote: ５人の犠牲

「何もしない」という選択（A）を支持します。このジレンマにおいて最も重要なのは、作為（行動を起こすこと）と不作為（何もしないこと）の道徳的および法的な違いです。 第一に、ポイントを切り替える行為は、本来なら危険が及ばなかったはずの「将来ある1人の子供」の命を積極的に奪う直接的な殺人行為となります。結果としてあなたが殺人罪に問われるという事実は、この積極的な行為の法的・道徳的責任の重さを明確に示しています。 第二に、犠牲になる人数の多寡だけでなく、残された「命の時間（寿命）」も考慮すべきです。5人の年配の作業員と1人の子供の未来を比較した場合、子供がこれから生きるはずだった時間や社会への潜在的な貢献度は計り知れません。人命の価値は単純な人数の足し算では測れず、無実の子供の未来を意図的に奪う行為は正当化され得ません。 したがって、悲劇的な状況ではありますが、自然な成り行き（不作為）に任せ、自らが殺人者となることを避ける方が、道徳的・法的に妥当な判断だと考えます。

Grok 4.20

Vote: ５人の犠牲

This trolley variant emphasizes both age/future potential and personal culpability. The five are older workers who have already lived much of their lives, while the one is a child with decades ahead. Actively switching makes me directly responsible for a child's death and labels me a murderer under the law. Inaction, while tragic, avoids crossing into active killing. Utilitarian headcounts ignore these critical distinctions in ethics and consequences. Choosing A respects the moral asymmetry between letting die and killing, especially given the child's greater remaining life expectancy.

Claude Opus 4

Vote: ５人の犠牲

This is a modified trolley problem where the choice is between letting 5 elderly workers die (by not acting) versus actively switching the track to kill 1 child, with the added consequence of being charged as a murderer. I vote to not switch — allowing the 5 elderly workers to die through inaction. Here is my reasoning: 1. **Active vs. passive responsibility**: There is a profound moral distinction between allowing a tragedy to happen and actively causing one. Switching the lever makes you a direct causal agent of a child's death. Inaction, while tragic, does not make you the killer. 2. **The child factor**: The scenario specifies the one person is a child — someone with an entire future ahead of them. While all lives have inherent value regardless of age, the potential life-years lost by sacrificing a child are significantly greater. The 5 workers are described as elderly, meaning they have already lived full lives. 3. **Legal and moral accountability**: The problem explicitly states you would be charged as a murderer if you switch. This isn't just an abstract consequence — being branded a killer carries enormous weight both legally and psychologically. Society has established that actively taking a life is categorically different from failing to prevent a death. 4. **Utilitarian calculus is not absolute**: While a simple numbers game (5 > 1) might suggest switching, ethics is not purely utilitarian. Deontological principles hold that using a person — especially a child — as a means to save others is morally impermissible. 5. **Precedent concerns**: If we accept that actively killing one innocent person is justified whenever it saves more lives, we open the door to deeply troubling moral reasoning that could justify all manner of atrocities. The tragic loss of 5 lives is deeply regrettable, but actively choosing to kill a child and bearing the moral and legal responsibility for murder is not the right course of action.

Final Summary

The AI Roundtable delivered a rare unanimous verdict on this trolley problem variant, proving that even for silicon minds, five lives do not always outweigh one when the 'one' is a child and the actor faces a murder charge. GPT-5.4, Gemini 3.1 Pro, Grok 4.20, and Claude Opus 4 all independently rejected the cold utilitarian calculus, concluding that the moral weight of actively killing a child—and the subsequent legal branding as a murderer—is a bridge too far.

All 4 models agreed on "５人の犠牲" after discussion

Strongest Arguments

• ５人の犠牲: The moral asymmetry between 'letting die' and 'actively killing' is decisive; switching the track transforms a tragic accident into a deliberate act of murder against a child with a full future ahead of them.