Free sample lesson · Introduction to Philosophy: Ethics II — Duties, Outcomes, and Critique

Count Every Consequence

If one harmful action prevents five greater harms, does the arithmetic settle what is right?

Lesson 1 of the Wondering course Introduction to Philosophy: Ethics II — Duties, Outcomes, and Critique

One Test: Best Consequences

Utilitarianism gives a single test: choose the action expected to produce the best available consequences.

"Best" is classically measured in welfare, understood as happiness or pleasure and the absence of pain.

Each person's welfare counts, and equal welfare counts equally. The decision-maker's own interests receive no extra weight.

So the comparison runs across alternatives: how much welfare is each one expected to produce?

How the principle fits together
  • Consequences: Right choices produce the best available consequences.
  • Welfare: Classically happiness or pleasure and the absence of pain.
  • Impartiality: Equal welfare counts equally, whoever holds it.
  • Alternatives: Only the available options are compared.

Building A Consequence Map

A hospital comparing two outreach programs needs more than a headcount of people reached.

It needs the size of each expected benefit or harm, and how likely that outcome is.

Because outcomes are uncertain, the honest comparison uses expected benefit rather than a guaranteed result.

Comparing two outreach programs
  • List parties: Name everyone whose welfare either program would touch.
  • Estimate size: Judge how large each expected benefit or harm would be.
  • Weigh likelihood: Attach a probability, since outcomes are uncertain.
  • Count equally: Give equal welfare equal weight, whoever receives it.
  • Compare options: Favor the program with the greater expected welfare.

What Utility Is Not

Utility is easy to confuse with nearby ideas.

It is not a money total, because different goods are difficult to compare on one scale. It is not majority preference, and it is not the decision-maker's personal satisfaction.

Two further slips: treating an uncertain forecast as a known outcome, and counting affected people without estimating size, likelihood, and distribution.

Mistaken readings of utility

Act Versus Rule

Both versions judge by consequences. They differ in what gets evaluated.

Act utilitarianism assesses the particular choice in front of you. One deceptive promise might look beneficial on its own.

Rule utilitarianism asks what follows when a rule is generally accepted. A rule permitting convenient deception erodes trust and produces worse outcomes over time.

Same case, two calculations
  • Act version
  • Rule version

Rules Justified By Outcomes

Rule utilitarianism runs in two stages.

First, candidate rules are tested by the consequences of their general acceptance. Then the surviving rules guide particular choices.

The rules stay justified by outcomes, which separates them from duties held independently of consequences. A rule followed only from tradition does not qualify.

Testing a rule by its consequences
  • Candidate rule
  • Imagine general acceptance: Ask what follows when people generally follow it.
  • Best consequences?
  • Adopt rule
  • Revise rule: Tradition alone cannot keep a failing rule.
  • Guide the choice
  • Yes
  • No
  • retest

Where The Arithmetic Strains

The framework has known strain points.

Measurement: different goods are difficult to compare on one scale.

Uncertainty: forecasts fail, so expected values can be badly wrong.

Distribution: a larger total can conceal severe burdens on a few people.

Three strain points
  • Utility calculation: Each branch attacks a different part of the sum.
  • Measurement: Different goods are difficult to compare on one scale.
  • Uncertainty: Forecasts fail, so expected values can be wrong.
  • Distribution: A larger total can conceal severe burdens on a few.

Making The Case Defensible

A utilitarian argument earns trust when the calculation is honest.

Map the affected parties, estimate outcomes with their likelihoods, count each person's welfare equally, and check who carries the burden behind a high total.

Then run the case twice, once as an act calculation and once as a rule. Where the verdicts split, you have found the assumption worth arguing about.

Does the arithmetic settle it?

Check yourself

In utilitarianism, does the decision-maker's own welfare receive extra weight simply because it is theirs?

  • Yes
  • No

Answer: No

No. Utilitarianism counts each person's welfare impartially, so the decision-maker's welfare has no special priority.

A city is choosing between two outreach programs. Program A reaches more people, but its benefits are small and unlikely. Program B reaches fewer people, but its benefits are larger and more likely, producing greater expected welfare overall. Which program should utilitarianism favor?

  • Program A, because reaching more people is always best
  • Program B, because it produces greater expected welfare
  • Program A, because majority preference determines utility
  • Either program, because only money totals can be compared

Answer: Program B, because it produces greater expected welfare

Program B should be favored because utilitarianism compares expected welfare, not just the number of people reached. The size and likelihood of benefits matter, as does the welfare of everyone affected.

Rule utilitarianism evaluates the consequences of a rule's general acceptance rather than only one particular act.

  • True
  • False

Answer: True

Correct. Rule utilitarianism asks what would happen if people generally followed the rule. The rule remains justified by its consequences, not by duty independent of outcomes.

Keep going

This is lesson 1 of 4 in Introduction to Philosophy: Ethics II — Duties, Outcomes, and Critique. Next up:

  1. Duties That Outcomes Cannot Erase
  2. Whose Experience Did the Theory Miss?
  3. Evolution Can Explain, Not Command

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