Doctrine of Double Effect, as developed by Aquinas and refined by Foot and Thomson, already separates foreseen-but-unintended consequences from intended ones without requiring action.

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Reasons For

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Reason for

1.Moral agency requires distinguishing intended effects from merely foreseen harms; DDE preserves this crucial distinction without collapsing all consequences into intentionality.
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2.DDE explains our intuition that a surgeon performing necessary amputation differs morally from an aggressor causing identical injury, despite identical physical outcomes.
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3.The doctrine provides actionable moral guidance by clarifying when agents bear direct responsibility versus indirect causal involvement in harmful outcomes.
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Reasons Against

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Reason against

1.The intention/foresight distinction is psychologically unstable; agents routinely rationalize foreseen harms as merely incidental when intentions align with their interests.
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2.DDE permits morally troubling outcomes (accepting civilian deaths as foreseen-but-unintended) that seem indistinguishable from intending harm in their practical effects.
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3.Without requiring action or proportionality constraints, DDE allows harmful foreseen consequences merely by mental categorization rather than genuine moral justification.
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Key Terms

Aquinas: Thomas Aquinas was a medieval Italian priest and philosopher (1225-1274) who became one of the most influential thinkers in Western history. He attempted to show that Christian faith and human reason are compatible, arguing that we can use logic and observation to understand God and the natural world. His ideas deeply shaped Catholic theology and continue to influence how religious and secular institutions think about ethics, knowledge, and the relationship between science and belief.
Doctrine of Double Effect(Proposed as one explanation for differing moral judgments in trolley-type cases): A moral principle that distinguishes between harm that is strictly intended (as a means or end) and harm that is merely foreseen as a side effect of an action
Foot(as a philosopher's name): Philippa Foot was a 20th-century British philosopher who wrote influential work on ethics and moral dilemmas, especially about the difference between actively harming someone versus letting harm happen.
Foreseen-but-unintended consequences(as used in ethics): Results of your action that you can predict will happen, but that you don't actually want to happen—the difference between knowing something bad will occur versus actually aiming for it.
Thomson(as the philosopher whose theory is being discussed): Judith Jarvis Thomson is a philosopher famous for writing about rights and ethics, especially through thought experiments like the 'violinist argument' about bodily autonomy.
intended(in philosophy of language): What someone actually meant or had in mind, as opposed to other possible meanings.

Connections

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Consequentialism1 linked

Agent-relative obligations require both intention and action (causation) to cons...DDE explains our intuition that a surgeon performing necessary amputation differ...DDE permits morally troubling outcomes (accepting civilian deaths as foreseen-bu...Moral agency requires distinguishing intended effects from merely foreseen harms...

Details

Type: claim
Perspectives: 2 (1 for, 1 against)
Edits: 1 edit