3.2.1 - Act, rule and problems for utilitarianism

The Pressure On Utilitarian Choice

Utilitarianism can look refreshingly practical: choose the option that maximises utility. But that simple instruction hides two pressures.

First, should the utilitarian assess each individual act directly, or should they follow rules whose general acceptance would maximise utility? Second, even if the decision procedure is settled, can utility really handle everything AQA asks about: pleasure, rights, calculation, partial relationships, personal integrity, and intentions?

The lesson's central question is therefore:

Can utilitarianism remain a precise moral theory once it must guide real agents,
with limited knowledge, special relationships, rights claims, and personal commitments?

Key terms:

The important warning is that "act versus rule" is not just a classroom label. It changes how the theory handles nearly every objection. Act utilitarianism asks directly which available act has the best consequences. Rule utilitarianism asks which rules it would be best for people generally to accept and follow. That difference can decide whether utilitarianism appears flexible and humane or unstable and permissive.

Act And Rule Decision Procedures

Act utilitarianism is the most direct form. It says that in each situation, the morally right act is the available act with the best utility outcome. It treats familiar moral rules such as keep promises, do not lie, and do not harm the innocent as useful only when they help produce good consequences.

Rule utilitarianism keeps utility as the ultimate standard, but shifts the immediate test. Instead of asking whether this particular breach of a rule would be useful, it asks which rule or code would maximise utility if generally accepted. A rule utilitarian can therefore say that even if one isolated lie or rights violation seems useful, a general practice allowing such exceptions may destroy trust, security, and liberty.

The two procedures can be reconstructed like this:

Act utilitarian reasoning
1. P1: The right act is the available act that maximises utility.
2. P2: In this situation, act A maximises utility better than acts B, C, and D.
3. Therefore, C: Act A is the right act.

Hidden assumption: We can identify the relevant alternatives and estimate their utility accurately enough.
Inference type: practical reasoning from a maximising criterion.
Main pressure point: calculation and counter-intuitive permissions.

Rule utilitarian reasoning
1. P1: The right act is the act required by the rule or code whose general acceptance would maximise utility.
2. P2: Rule R belongs to the utility-maximising code for agents in circumstances of this kind.
3. P3: In this situation, rule R requires act A.
4. Therefore, C: Act A is the right act.

Hidden assumption: A utility-maximising rule can be specified without becoming either too rigid or just act utilitarianism in disguise.
Inference type: practical reasoning from an indirect maximising criterion.
Main pressure point: rule worship and collapse into act utilitarianism.

J. J. C. Smart defends act utilitarianism and presses a famous objection to rule utilitarianism. If the rule utilitarian refuses to break a rule when breaking it would definitely produce the best consequences, Smart thinks this looks like rule worship: treating the rule as if it matters independently of the utility it was meant to serve.

There is a second Smart-style pressure. If the rule utilitarian keeps adding exceptions whenever an exception would maximise utility, the rule may collapse into act utilitarianism. The rule becomes: follow the rule except when breaking it would maximise utility. That no longer looks like a distinctive rule theory.

The rule utilitarian's best reply is to distinguish sensible rules from mechanical rules. A good moral code can include limited, public, learnable exceptions without becoming the act utilitarian instruction to calculate everything from scratch. For example, a rule can allow emergency exceptions while still forbidding self-serving exceptions that undermine trust. The residual problem is how to draw that line without making the rules either too crude or too flexible.

Pleasure And The Experience Machine

The first AQA issue asks whether pleasure is the only good. This targets hedonistic utilitarianism, not every possible form of utilitarianism. Bentham and Mill treat happiness, pleasure, and the absence of pain as central, though Mill's qualitative account complicates the simple quantity picture. Non-hedonistic utilitarians can define utility in terms of preference satisfaction or welfare more broadly.

Nozick's experience machine is a thought experiment against the pleasure-only claim. Imagine a machine that could give you whatever experiences you most want. While connected, you would not know the experiences were artificial. If pleasure or pleasurable experience were the only thing good for you, then plugging in for life would seem rationally required. But many people think they have reason not to plug in: they want actually to do things, to be a certain sort of person, and to be in contact with reality.

The objection can be reconstructed like this:

Claim at issue: Pleasure, or pleasurable experience, is the only thing good for a person.

1. P1: If pleasure is the only good, then a life with the best possible pleasurable experiences is as good as, or better than, any real life with less pleasure.
2. P2: The experience machine can provide the best possible pleasurable experiences.
3. P3: Many people have strong reason not to choose life in the machine, because real doing, real relationships, and real achievement matter.
4. Therefore, C: Pleasure is not the only good.

Hidden assumption: Our refusal to plug in tracks genuine value, not merely fear, bias, or misunderstanding.
Inference type: thought-experiment based conceptual objection.
Main pressure point: whether the intuition against plugging in is reliable.

The objection targets the concept of utility. If utility is only pleasure, then the theory seems unable to explain why reality, achievement, truth, agency, or genuine relationships matter except through how they feel. This weakens hedonistic utilitarianism because it challenges the value premise before any act/rule calculation begins.

There are several utilitarian replies.

The best evaluation is balanced. Nozick does not show that pleasure is worthless. It shows that pleasure is hard to defend as the only intrinsic good. AQA students should therefore connect the experience machine to the boundary between hedonistic and non-hedonistic utilitarianism.

Fairness Liberty And Rights

The fairness and liberty objection says utilitarianism can treat individuals as containers of utility rather than as people with claims that must not simply be outweighed. If enough people gain enough utility from restricting, punishing, silencing, or exploiting a minority, an aggregate calculation may appear to permit it. This is the risk AQA names as the tyranny of the majority.

Be careful: the problem is not the crude slogan "the greatest happiness of the greatest number." A sophisticated utilitarian maximises total or overall utility, so a small minority's severe suffering can outweigh a majority's mild pleasure. The deeper problem is that rights and liberty seem conditional on the utility balance. If violating one person's rights really did maximise utility, act utilitarianism appears committed to permitting or requiring it.

The objection can be reconstructed like this:

Claim at issue: Utility is the only ultimate standard of right action.

1. P1: If utility is the only ultimate standard, then rights and liberties are morally protected only when protecting them maximises utility.
2. P2: There can be cases where violating an individual's right or liberty appears to maximise utility.
3. P3: It is wrong to violate an individual's right or liberty merely because doing so benefits others overall.
4. Therefore, C: Utility cannot be the only ultimate standard of right action.

Hidden assumption: Rights and liberties have non-instrumental moral force, not merely utility value.
Inference type: conceptual and practical objection from counter-intuitive implication.
Main pressure point: whether P2 describes genuine utility-maximising cases once all effects are included.

This objection targets utilitarianism's implication. It says the theory gives the wrong kind of explanation for fairness. A non-utilitarian may say: do not punish an innocent person because they are innocent and have rights. The utilitarian must say: do not punish an innocent person because the practice, the act, or the expected consequences would reduce utility.

Utilitarian replies differ by type.

Rule utilitarianism is often strongest here. It can say that public, stable rights-protecting rules are not optional decoration; they are part of the utility-maximising moral code. The residual issue is whether this saves rights themselves or merely gives utility-based reasons to act as if rights are strong.

Calculation And Which Beings Count

The calculation problem has two parts. First, agents rarely know all the consequences of their actions. Second, even if they could predict effects, they must decide whose utility counts and how to compare different kinds of benefit and harm.