The Lifeboat
A lifeboat can safely hold 10 people. There are 15 survivors in the water. If you don't choose who comes aboard, the boat sinks and everyone dies. Do you choose?
The lifeboat scenario tests whether there are situations where choosing who lives and who dies is not only permissible but obligatory. It forces a direct confrontation with triage ethics, the distinction between killing and letting die, and whether deliberate selection is worse than random drowning.
The baseline case
If you don't choose: the boat is rushed by 15 people, capsizes, all 15 die plus the original 10 on board. Total loss: 25.
If you choose 10: 5 die, 20 survive.
The utilitarian calculus is clear. But most people feel deep discomfort with the act of choosing. There's something about being the selector that seems different from a neutral outcome.
Who decides, and how?
This is where the scenario gets interesting. Even if you accept that someone should choose, the method matters. A random lottery is impartial but ignores ability to contribute to survival. Priority by vulnerability puts children and the injured first, or last, depending on what "priority" means. Capability means choosing the people best able to row and navigate. Social utility means saving the doctor, the strong swimmer, the person who knows the coastline.
Each method encodes a different set of values. The lifeboat isn't just asking whether you'll choose. It's asking what you think the basis for such a choice should be.
The distinction some philosophers draw
Some argue there's a morally significant difference between:
- Positive duty: you're not obligated to sacrifice yourself to save others
- Comparative fairness: if you're choosing who gets a scarce resource, some methods are more defensible than others
The scenario doesn't require you to drown yourself to save others. It does ask you to take responsibility for who lives.
What medical ethics has learned
Triage is a real practice with centuries of development. Emergency medicine accepts that in mass casualty events, choosing is mandatory, and has built frameworks for it. The insight: refusing to choose is itself a choice, and usually a worse one.
Is it worse to choose who lives, or to let chance determine it when you had the ability to do otherwise?