Utilitarianism
Founder of modern utilitarianism
Refined Bentham's theory
Modern preference utilitarian
📜 What Is It?
Utilitarianism is a moral theory that judges actions by their outcomes — the right action is whatever produces the greatest overall happiness for everyone affected.
It is a consequentialist framework: only results matter, not your intentions, motives, or character.
It demands impartiality — everyone's happiness counts equally, including strangers and even animals.
Founded by Jeremy Bentham and refined by John Stuart Mill, it remains one of the most influential ethical systems in philosophy, economics, law, and public policy today.
⏳ Historical Roots
Jeremy Bentham publishes Introduction to the Principles of Morals and Legislation. He introduces the "felicific calculus" — a 7-dimension system for measuring pleasure and pain.
John Stuart Mill publishes Utilitarianism, distinguishing "higher" (intellectual) pleasures from "lower" (bodily) ones. "Better to be Socrates dissatisfied than a fool satisfied."
Modern developments: Act vs. rule utilitarianism (Smart, Brandt), preference utilitarianism (Hare, Singer), population ethics (Parfit), effective altruism movement.
🌍 Real-World Applications
Medical Triage & QALYs
Hospitals use QALYs (Quality-Adjusted Life Years) to allocate scarce resources, surgery slots, and ICU beds to maximize total patient wellbeing — a direct utilitarian calculation.
Effective Altruism
Peter Singer and the effective altruism movement argue that donating to the most cost-effective charities (e.g., malaria nets over local arts) is a moral obligation — every dollar should save the most lives.
Government Cost-Benefit Analysis
Regulatory agencies (EPA, OSHA) weigh the costs and benefits of every rule using utilitarian logic: a regulation is justified if its societal benefits exceed its economic costs.
The Trolley Problem
The most famous ethical thought experiment. Pull the lever to save 5 lives at the cost of 1? Utilitarianism says yes. Push the fat man? Same logic — yet most people's intuitions differ.
Animal Welfare
Bentham wrote that animal suffering counts equally — "The question is not, Can they reason? but, Can they suffer?" Modern utilitarians like Singer are foundational to the animal rights movement.
Climate Policy
Carbon taxes and emissions trading are utilitarian: they accept some economic cost now to prevent catastrophic future suffering for billions — weighing total consequences across time and geography.
🔄 Act vs. Rule Utilitarianism
⚡ Act Utilitarianism
Evaluate each individual action by its direct consequences.
- Is telling this lie right now beneficial? → Yes = lie.
- Flexible, case-by-case reasoning
- Risk: can justify injustice in edge cases
📋 Rule Utilitarianism
Follow rules that maximize utility if generally adopted.
- Lying is wrong because a general rule allowing lies produces less trust → less happiness overall.
- More stable, protects rights
- Risk: rule worship (following a rule when breaking it would clearly help)
⚠️ Key Criticisms
🎬 Recommended Video Clips (all < 2 min)
Utilitarianism | Ethics Defined
Watch on YouTube →The Trolley Problem
Watch on YouTube →Jeremy Bentham's Utilitarianism in 60 Seconds
Watch on YouTube →
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