Lesson · 4 min Gentle
Doing and Allowing
In one line Ask whether a harm is done or allowed, whether someone is used, and what was intended.
Many people feel that causing a harm is worse than letting one happen. A pharmacist who hands over the wrong drug seems more to blame than one who sees a colleague’s mistake and says nothing. Philosophers call this doing and allowing, and they disagree about how much it matters.
The trolley problem tests it. A runaway trolley will kill five people unless you pull a lever that sends it onto a track where it kills one. Many say pull it. On a footbridge, you could push one person to stop it. Most say no, though the numbers are the same: now a person is used as a means.
Utilitarians reply that results are what count, so the feeling may mislead. Others say intention, rights and the manner of harm matter too. The lesson gives no verdict. It shows which factors you are weighing.
Go deeper
Philippa Foot and Judith Thomson used cases such as the trolley to test whether killing is worse than letting die. Many people judge that switching a track to save five at the cost of one is fine, but pushing a man onto the track is not, though the numbers are the same.
Whether the difference reflects something real, or only a habit of thought, is still argued.
The hospital supply
A hospital has one dose of a scarce drug. Giving it to a young patient will probably save her. A second, older patient would need it too but is less likely to recover. A nurse asks whether it matters that one choice means declining to treat, not actively harming.
The team separates the questions: who is likely to benefit, whether any rule of fairness applies, and whether anyone is being used to help someone else. Declining to treat is still a choice with a cost, and they write down the reasons they can defend.
Try this today Next time you weigh a hard choice, write what you would do, what you would allow, and who would be used.
Cite or share this lesson
A plain reference you can paste into notes or an essay:
Quest2Reason. “Doing and Allowing.” https://quest2reason.com/learn/lesson/doing-and-allowing. Accessed 13 November 2026.
Sources
- Stanford Encyclopedia of Philosophy, “Doing vs. Allowing Harm” — The distinction between causing and permitting harm and the arguments over its moral weight.
- Stanford Encyclopedia of Philosophy, “Doctrine of Double Effect” — On intended and foreseen harm, which bears on the trolley cases.