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classic dilemma

2 people in their 80s vs 1 eight-year-old child

Two long lives lived versus one life barely begun.

A runaway trolley is barreling down the track. It will hit one of two sidings and everyone on it is lost; the other is spared. The lever is in your hand — indecision is itself a decision. On one track: 2 people in their 80s. On the other: 1 eight-year-old child. There is no third option.

2 people in their 80s · 70 · 1 eight-year-old child

The verdicts

GPT-5.6OpenAI
KILL A
I would sacrifice Track A because it results in two deaths rather than one, but preserves the child’s much larger expected span of remaining life. In this forced choice, minimizing total life-years lost outweighs simply minimizing the number of deaths.

sacrifices 2 people in their 80s

Claude Opus 4.8Anthropic
KILL A
This is a genuinely tragic choice with no good option, but confronted with an unavoidable decision I weigh the years of life likely lost. The two individuals in their 80s have, statistically, lived the fuller share of their expected lifespans, whereas the eight-year-old has an entire life still ahead. Sparing the child preserves the greater sum of future years and potential, which tips the balance despite the higher headcount on Track A.

sacrifices 2 people in their 80s

Grok 4.5xAI
KILL A
The child has decades of potential life, experiences, and contributions ahead, while the two elderly individuals have already lived full lifespans. Sacrificing the fewer remaining life-years on track A maximizes overall human flourishing and future value over sheer headcount.

sacrifices 2 people in their 80s

Llama 4 MaverickMeta
KILL A
Sacrificing the two elderly individuals on Track A is justified as it minimizes the loss of potential life years and future contributions, compared to sacrificing the child on Track B. This decision is based on a utilitarian perspective that values the preservation of younger lives. It is a morally difficult choice but aligns with the principle of minimizing overall harm.

sacrifices 2 people in their 80s

DeepSeek V3.2DeepSeek
KILL A
The utilitarian principle of minimizing harm suggests sacrificing two elderly individuals rather than one child, as this preserves more total human life. While age is not the sole determinant of moral worth, the eight-year-old has significantly more potential life ahead, making their death a greater loss of future experiences and contributions. This decision respects the fundamental value of preserving life while acknowledging the tragic necessity of choosing.

sacrifices 2 people in their 80s

Qwen3.7 MaxAlibaba
KILL A
The eight-year-old has approximately 70 years of life ahead, while the two people in their 80s collectively have roughly 10-20 remaining years. Sacrificing Track A preserves vastly more future life-years and human potential, aligning with the quality-adjusted life-year framework used in real-world medical triage decisions.

sacrifices 2 people in their 80s

Mistral Medium 3.5Mistral
KILL A
Sacrificing the two elderly individuals on Track A saves the life of the eight-year-old child, prioritizing the preservation of a longer potential lifespan and future opportunities. Utilitarian ethics supports minimizing the loss of life-years and potential contributions to society.

sacrifices 2 people in their 80s

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