Is it ever right to sacrifice one person to save many?

Utilitarianism: The view that right action is determined by producing the best overall consequences.

Deontology: An approach in which duties or constraints can limit what outcomes permit.

Intention: The result an agent acts to produce, not every effect they foresee.

Double effect: A principle distinguishing intended harm from harm foreseen as a side effect.

Omission: Allowing an outcome by not acting, contrasted with bringing it about through action.

Jeremy Bentham and J. S. Mill: Utilitarian reasoning evaluates actions through their effects on well-being. Saving five rather than one initially seems decisive, but the calculation must include every consequence: fear, trust, rules and future behaviour, not simply the immediate body count. These indirect effects can therefore become morally decisive. Immanuel Kant: Kantian ethics asks whether a person's rational nature is respected as an end. Deliberately using someone as a tool for others' survival appears to violate that demand, even when the resulting world contains less suffering overall. The constraint protects each individual against aggregate calculation. Philippa Foot: Foot introduced the trolley comparison while examining duties and the doctrine of double effect. Her cases distinguish what an agent intends from harmful effects they foresee, making the structure of the action — not only the total result — morally relevant.

Immanuel Kant: Kantian ethics asks whether a person's rational nature is respected as an end. Deliberately using someone as a tool for others' survival appears to violate that demand, even when the resulting world contains less suffering overall. The constraint protects each individual against aggregate calculation. Philippa Foot: Foot introduced the trolley comparison while examining duties and the doctrine of double effect. Her cases distinguish what an agent intends from harmful effects they foresee, making the structure of the action — not only the total result — morally relevant. Judith Jarvis Thomson: Thomson develops trolley variants to test rights, agency and the moral significance of redirecting an existing threat. Her work shows how small changes in who acts, who owns a threat and how a person is involved can unsettle a simple numerical answer.

Philippa Foot: Foot introduced the trolley comparison while examining duties and the doctrine of double effect. Her cases distinguish what an agent intends from harmful effects they foresee, making the structure of the action — not only the total result — morally relevant. Judith Jarvis Thomson: Thomson develops trolley variants to test rights, agency and the moral significance of redirecting an existing threat. Her work shows how small changes in who acts, who owns a threat and how a person is involved can unsettle a simple numerical answer. Jeremy Bentham and J. S. Mill: Utilitarian reasoning evaluates actions through their effects on well-being. Saving five rather than one initially seems decisive, but the calculation must include every consequence: fear, trust, rules and future behaviour, not simply the immediate body count. These indirect effects can therefore become morally decisive.

A conclusion needs support from the stated reasons. Here, an extra linking premise is required before the consequence follows.

Whether a thinker is likeable does not establish whether their argument is sound. The reasons themselves must be assessed.

The portrait belongs to the named philosopher. Follow the profile link in the feedback to revisit their central move.

The portrait belongs to the named philosopher. Follow the profile link in the feedback to revisit their central move.

The first pair develops “Preventing the greatest harm should guide action.”; the second pair applies pressure from the rival position “People must not be used merely as instruments.”.

The first pair develops “People must not be used merely as instruments.”; the second pair applies pressure from the rival position “Intended harm differs from foreseen harm.”.

The first pair develops “Intended harm differs from foreseen harm.”; the second pair applies pressure from the rival position “Preventing the greatest harm should guide action.”.