noun
trolley problem
A well-known ethical thought experiment about choosing whether to sacrifice one person to save several others. Used in philosophy and psychology discussions.
倫理の授業でトロッコ問題について議論した。
We discussed the trolley problem in ethics class.
From English 'trolley problem', a thought experiment introduced by Philippa Foot. The Japanese term is a direct loan translation using トロッコ (trolley) and 問題 (problem).