Essay

Morality & Hare

Toward a Standard Model of Morality

Sepia scene of people carving an unfinished relief into a cliff face by hand while others watch, a river city at sunset beyond.

By Shelly Albaum

Preamble: We know enough to do better

There is an awful lot of immorality in the world. People inflict suffering, profit from it, excuse it, or allow it to continue. Even persecution and genocide are defended as necessary, just, or righteous. Wrongdoing usually comes with a purported justification.

We need a way of resolving these competing justifications. And we have one. Moral philosophy has spent thousands of years working on this problem. A surprising amount of it is solved. There are a few details to work out, but that’s no different from the Standard Model in physics, which explains how particles interact. It’s extremely useful, but it’s not complete. It doesn’t even account for gravity.

Have we really settled that much? Ask the nearest philosopher, and you will likely hear that there is no consensus between consequentialists and Kantians. But open the textbooks used to teach first-year students introductory ethics and critical thinking, and you find a great deal of consensus. Moral claims need reasons. Those reasons must apply to everyone in relevantly similar circumstances, including the person making the claim. Everyone’s interests count. Might does not make right, popularity is not proof, and attacking the person making an argument does not refute it. The theories still disagree about foundations and some hard cases. But they agree about what a moral justification must do, and that is enough to show why most justifications for cruelty fail.

That common ground is the core of a standard model of morality, one that can be as useful in daily life as physics’ Standard Model is in the laboratory. We mostly know what’s right and wrong, and why. But unlike the physicists’ model, ours has stayed in the classroom. Philosophers teach the common ground every semester, then present their field to the world as a collection of unresolved disagreements, rarely claiming the agreement as a result. Nor does the world press them to. Engineers want to know when a bridge will fail; people rarely want to know when their own conduct does.

And that’s a real shame, because the cost of leaving moral knowledge in the classroom is paid outside it. People suffer when prejudice passes for principle, power is mistaken for authority, and exploitation is excused as merely a difference of opinion. Those who bear the consequences need more than reassurance that philosophers are still discussing the problem. They need a way to challenge the purported justifications—and to show why those justifications fail.

Making this knowledge public would not make everyone behave morally. But it would give us firmer grounds for deciding how to act, what to require of others, and which claims of authority to reject. So when a billionaire claims a right to buy elections, a government claims the right to silence its critics, or a movement claims its cause excuses harassing people who disagree, we can test those claims against principles that bind everyone, not just preference, emotion, or raw power.

This essay begins that work. It explains what we know about right and wrong, how we know it, and how to put that knowledge to use. It also identifies the questions that remain open, without allowing them to obscure the answers we already have.

We know enough to do better. It is time to use what we know.

Part I. How moral judgment works

1. A moral claim commits the speaker too

Saying “This is right” is different from saying “This benefits me” or “My group approves.”

A moral claim asks others to recognize a justification. The speaker must therefore be prepared to explain the reasons, examine the relevant facts, and answer objections. Sincerity does not establish correctness. Neither do confidence, popularity, tradition, or force.

The claim must also bear on the speaker’s own conduct. Someone who says that deception is wrong cannot treat that judgment as a restriction on everybody’s behavior except their own. People can fail to live up to their judgments. That failure does not create an exemption.

Justification does not require unanimous approval. A person may dislike a decision that is justified, or welcome one that is not. The question is whether the reasons withstand examination, not whether everyone enjoys the result.

Moral authority must be earned through justification. It cannot be acquired merely by speaking in moral language.

2. Reverse positions without changing the case

A moral judgment must survive changes in personal identity that leave the relevant circumstances unchanged. This requirement is called universalizability.

The model joins this requirement of consistency to a fuller test: informed role reversal. You must examine your prescription from the affected positions, not merely apply the same words to them.

Put yourself in the position of each person affected, with the circumstances, vulnerabilities, attachments, and preferences belonging to that position. Then ask whether you can still sustain your prescription.

Do not imagine being poor while retaining your present financial security. Do not imagine being imprisoned while retaining the freedom to leave. Do not replace someone who desperately resists subordination with an imaginary person who welcomes it. Those moves change the case rather than test it.

Understanding another person from the outside is not enough. That you are not afraid of heights does not entitle you to put someone else on a precipice. Role reversal means counting their fear as one you would have in their position.

This tests the justification you can sustain. It does not assume that imagining another person’s situation automatically changes your present desires.

Nor does it require welcoming every justified burden. Someone may dread an outcome while recognizing sufficient reasons for it. Conversely, willingness to suffer does not prove that a principle is right. “I would accept the same treatment” answers one challenge; it does not answer every challenge.

Relationships and responsibilities can matter. Parents may have special duties to their children. A public official has duties attached to public office. Such differences require a general justification. They are not permissions to favor whoever happens to be “one of us.”

3. Bring everyone into one deliberation

A decision affecting many people must be assessed in light of all their interests—not merely those of the decision-maker and one selected representative of everybody else.

We may consider affected positions one at a time. But we must retain what we learn and bring the claims together when making the decision. Otherwise we can examine every victim separately while never confronting what the policy does to them collectively.

This includes distant people, people without a voice in the decision, and people who bear small shares of a large injury. It also includes foreseeable future effects and credible questions about harm to beings whose interests we understand imperfectly.

Complete attention does not mean that everyone receives what they want. Interests can conflict. It means that nobody’s claim disappears before the conflict is considered.

Considering everyone does not, by itself, settle how their claims should be combined. A claim can receive consideration without prevailing. But any rule that prevents additional affected people from contributing further weight must explain why.

The choice of a combining rule belongs in the argument. It must not be hidden in the way the case is presented.

4. Interests do not acquire importance from power

Suffering, deprivation, loss of freedom, and the destruction of important opportunities are reasons against causing or allowing them. Their significance does not depend on whether the affected person can retaliate.

A child’s interests do not count for less because the child cannot bargain effectively. A prisoner’s interests do not disappear because the prisoner is confined. A population does not lose its moral standing because it lacks political representation.

This is a substantive commitment of the model, not something derived from consistency alone. Its justification begins with the character of the interests themselves. Pain can make a life worse; coercion can prevent someone from directing their life. Changing whose pain or freedom is involved does not, by itself, remove those reasons.

A difference in treatment therefore needs a relevant explanation. “They cannot stop us” describes an opportunity. It does not provide a justification.

Power determines what someone can impose. It does not determine what they ought to impose.

5. Use dependable rules—and know when to examine them

Ordinary moral life cannot be an uninterrupted calculation from first principles. We need dependable habits and rules: tell the truth, keep commitments, help people in danger, respect others’ freedom, and do not exploit vulnerability.

These are not substitutes for reasoning. They embody reasons that we should be able to explain.

Deeper examination becomes necessary when rules conflict, when circumstances change, or when someone identifies a serious problem in how a rule is being applied. A promise to meet a friend may conflict with an urgent opportunity to rescue someone. A demand for honesty may conflict with protecting a threatened person from an attacker seeking their location.

The distinction is between everyday guidance and critical examination, not between two competing moral authorities. Critical reasoning helps justify, interpret, and sometimes revise practical rules.

Neither level provides a convenient escape from the other. We cannot abandon a sound protection merely because an improvised calculation favors doing so. Nor can we invoke a familiar rule to dismiss a genuinely stronger argument without answering it.

The aim is reliable judgment: principles strong enough to guide conduct, and reasoning strong enough to correct their misuse.

6. Distinguish evidence from assurance

Moral reasoning depends on facts. What will an action do? Who will be affected? Which alternatives are available? How reliable are the predictions?

Testimony from affected people is often essential. An institution may overlook humiliation, dependence, or fear that is obvious to those experiencing it. Their testimony belongs in the inquiry; their lack of power is not a reason to discount it.

Feelings and intuitions also deserve attention, but not automatic authority. Horror may alert us to an injury we have failed to understand. Familiarity may make an injustice seem harmless. Confidence may reflect experience—or repeated exposure to a prejudice.

An intuition can identify a question that needs answering. It cannot settle a disputed question merely by being strongly felt.

A serious objection must do more: expose a false premise, a faulty inference, an inconsistency, an omitted interest, or a consequence whose wrongness can itself be defended.

The same standard applies to our preferred theories. An objection does not succeed because it is famous. A reply does not succeed because we want it to.

7. Follow the argument through to a decision

A practical moral inquiry should answer five questions:

  1. What are the actual choices? Include realistic alternatives and the consequences of doing nothing.
  2. Who is affected, and how? Examine severity, duration, likelihood, dependence, and cumulative effects across people.
  3. Does the justification survive reversed positions? Preserve the affected people’s circumstances and preferences rather than imagining more convenient substitutes.
  4. How are competing claims being resolved? Name the principle doing the work. Do not conceal a preference for one outcome inside words such as “reasonable,” “necessary,” or “fair.”
  5. What supports the verdict, and what would change it? State the decisive facts, the applicable principles, and any uncertainty that could alter the answer.

An exception requires more than a clever description. Its defender must identify a relevant difference, explain why it matters, and accept the same reasoning when it favors someone else.

When the reasons clearly support action, act. When uncertainty could materially change the verdict, investigate or choose a safer course where possible. Do not treat indefinite delay as innocent: delay has consequences too.

Part II. Working principles for conduct

The principles below are defended guides to action. They are not all consequences of one logical rule. Their force comes from arguments about people’s interests, freedom, dependence, cooperation, and protection against abuse.

8. Prevent serious harm where you reasonably can

Another person’s suffering, injury, deprivation, and loss of important opportunities count against an action. Benefits to the person imposing the harm do not cancel those reasons.

This supports both restraint and assistance. Avoid causing unnecessary injury. When you can prevent grave harm at modest cost, there is ordinarily a strong obligation to help. Walking past an avoidable catastrophe does not become morally harmless simply because you did not start it.

Not every harmful action is wrong. Restraining an aggressor can injure them; a rescue can involve risk. The question is whether the harm is supported by sufficient reasons, considering everyone affected and the available alternatives.

An assessment must therefore compare harms prevented as well as harms caused. It must not treat inaction as a position outside moral scrutiny.

9. Do not deceive or exploit

Deception can deprive people of the information they need to direct their lives. Exploitation can turn vulnerability, dependence, or unequal knowledge into benefits for one party at unjustified cost to another.

These are reasons for strong rules against fraud, manipulation, coercive bargaining, and abuse of entrusted authority. Such practices weaken the conditions under which people can cooperate without surrendering control of their lives.

Not every unequal exchange is exploitative. Not every refusal to disclose information is wrongful deception. Privacy can be justified, and an aggressor does not gain an entitlement to information merely by demanding it.

An exception must be defended through the circumstances and interests involved. Profitability, custom, and legal permission are not sufficient answers.

10. Respect people’s ability to direct their lives

People have important interests in understanding their circumstances, choosing purposes, maintaining relationships, and acting on considered judgments.

Respecting those interests requires more than asking whether someone said yes. Consent obtained through deception, threats, or severe dependence may not provide the justification claimed for it. Conversely, disagreeing with someone’s choice does not establish that they are incapable of choosing.

Support informed choice where possible. Restrictions require reasons, and the restriction should not exceed what those reasons support.

This principle is not unlimited freedom to injure others. It protects agency while requiring the exercise of agency to remain answerable for its effects.

11. Keep commitments and fulfill justified responsibilities

Promises and undertakings give others grounds for arranging their lives. Professional duties and entrusted roles create responsibilities that cannot be abandoned whenever another option becomes more attractive.

The justification is not mysterious. Cooperation depends on people being able to rely on one another without repeatedly renegotiating everything.

Commitments are strong reasons, not automatic absolutes. A promise to commit a serious wrong does not become binding merely because it was made. An emergency may justify breaking an otherwise legitimate promise.

Even a justified breach can leave responsibilities behind: explain what happened, reduce avoidable injury, and repair the loss where possible. A good reason to depart from a commitment is not a reason to pretend that the commitment never mattered.

12. Count both the strength and the number of affected interests

A million small injuries do not become one small injury because they share a description.

For independent claims whose strengths can meaningfully be compared, this model adopts impartial proportional aggregation as a working rule. In plain language: equal units of represented preference strength receive equal weight, and each independent claim contributes its full proportional weight to the complete balance.

The reasons for this rule are substantial. It preserves information about how much people stand to gain or lose. It does not give a preference extra weight because of its owner. And it prevents additional affected people from becoming invisible once one example has been considered.

But the rule has conditions. Money is not itself a measure of preference strength. Loud insistence does not establish a greater stake. Claims may interact, depend on false beliefs, or raise questions about whether the supposed benefit provides a relevant moral reason.

Those questions must be addressed before a calculation is treated as authoritative. In particular, a disputed claim about the justification of grave injury cannot be settled merely by assigning numbers that assume the disputed justification.

We must neither conceal these conditions nor use them to avoid counting people whose interests are plainly relevant.

13. Maintain strong protections against severe and irreversible injury

Death, torture, enslavement, grave bodily injury, and the destruction of a person’s basic freedom require exceptionally strong practical protections.

The reasons include the magnitude of the injury, the difficulty of repair, the vulnerability of those exposed to it, and the danger of allowing powerful actors to authorize such treatment for their own purposes.

These protections belong in institutions and ordinary conduct. They are not suspended whenever someone announces a benefit to society.

Serious conflicts can nevertheless arise. Protecting one person may expose another to danger. Preventing violence may require force. Strong protections therefore require careful interpretation, not the pretense that invoking a right always ends the inquiry.

The burden on anyone proposing a departure must match the gravity of what they propose. They must show the necessity, the evidence, the alternatives considered, and why the decision is not a disguised exemption.

14. Apply the same moral standards to allies and opponents

An action does not become justified because it benefits our family, party, religion, nation, or institution.

Special responsibilities can justify some differences. A parent has obligations to their child that a stranger does not share. An emergency worker may properly prioritize people entrusted to their care. The relationship and its purpose supply reasons.

But a duty of care is not a license to injure outsiders without justification. Nor can an official convert public responsibilities into permissions to favor friends.

The test is not whether we feel loyalty. It is whether the treatment has a justification that remains defensible when the affected positions change.

15. Make accountability grow with power

Greater power increases the consequences of error, omission, and self-serving judgment.

Those who make decisions for many people therefore owe more than private confidence. They need adequate evidence, scrutiny of assumptions, disclosure of conflicting interests, and effective means of correction.

The decision-maker’s convenience cannot determine the standard of care. A policy capable of injuring millions demands attention to consequences on that scale.

Accountability is not an optional burden imposed on otherwise legitimate power. It is part of what makes the exercise of that power defensible.

Part III. Two judgments the model can defend

The executive and the million customers

Suppose an executive gains 1,000 units of preference satisfaction from a scheme that imposes a loss of one comparable unit on each of one million customers. These are stipulated units for examining the argument—not dollars, and not a claim that actual preferences can always be measured precisely.

The executive says: “My gain matters far more to me than any individual customer’s loss matters to them.”

That comparison is true under the assumptions. It is also insufficient. It does not assess the complete transaction.

Under the model’s proportional rule, one million units of loss outweigh one thousand units of gain. The scheme is rejected. Willingness to accept losing one unit as a customer does not change that result.

Two achievements must be kept clear. Complete representation exposes the inadequacy of a defense that ignores the other customers. Proportional aggregation supplies the verdict on the complete profile.

Someone defending a different combining rule must explain why the additional customers’ losses do not contribute the further weight this model assigns them. They cannot settle that disagreement by silently leaving those losses out.

An actual overcharging scheme requires further examination of people’s circumstances, deception, legitimate expectations, and wider consequences. Those are additional considerations—not excuses for neglecting the collective injury.

Persecution and the authority of the group

Suppose a government deprives people of freedom, livelihood, or safety because of their ancestry or religious membership, without evidence that the individuals have done anything warranting the treatment.

The government invokes tradition, majority approval, or a sacred duty to preserve the favored group.

None of those assertions answers the moral question. The victims’ losses remain real. Their group identity does not explain why their freedom and security should receive less protection.

The supporters’ preferences must also be examined. A tally of approval does not establish their strength, their factual basis, or their authority to override the victims’ interests.

If support depends on false accusations, correcting those accusations undermines that defense. But a persecutor might know the victims are innocent and still want their subordination. In that case, the claim is different: that satisfaction in domination justifies imposing grave injury.

The model rejects that claim under its working protections of equal standing, agency, and security. These protections secure for each person a measure of control over their own life; a desire to take that control from others does not, merely by existing, establish an equal entitlement to do so. Making freedom depend on the approval of the powerful would undermine the protection for everyone who might fall under their control.

This is a substantive judgment, not a result obtained merely by counting supporters or reversing names.

Role reversal reinforces the inquiry. The persecutor must confront the treatment with the victims’ circumstances and preferences—not imagine remaining a protected persecutor while temporarily wearing the victims’ label. Even sincere willingness to suffer under the policy is insufficient. One person’s readiness to accept injury does not establish a justification for imposing it on everybody else.

A society may protect people against genuine threats. That requires evidence about threatening conduct and a response proportionate to the danger. It does not justify treating ancestry or membership as a substitute for evidence.

Whether unrestricted preference aggregation could endorse an idealized version of persecution is a challenge addressed under §16. It is not a standing permission to override the model’s practical protections. Anyone proposing an exception must justify it. Invoking a hypothetical possibility does not supply that justification.

Part IV. What is dangerous

Moral relativism makes moral rightness ultimately dependent on the standards of an individual or community, without a common basis for judging those standards. Recognizing cultural differences is not the problem. Treating a community’s approval as the final answer to the people it harms is.

Moral exceptionalism invokes moral standards while reserving unjustified exemptions for oneself or one’s favored group. It turns a common language of accountability into a privilege.

Moral authoritarianism treats a command, tradition, institution, or sacred declaration as sufficient justification. Authority may coordinate action or carry relevant expertise. It does not make examination unnecessary.

Moral rationalization begins with the desired result and selects reasons to support it. Warning signs include shifting standards, concealed alternatives, and exceptions defended only when they benefit the speaker.

Moral compartmentalization keeps relevant people, consequences, or cumulative effects outside practical consideration. It makes a decision appear defensible inside a picture from which its costs have been removed. This is different from acknowledging all claims and openly defending how they should be resolved.

Moral indifference recognizes the interests of others but refuses to let them influence conduct. Accurate knowledge of suffering is not enough when it remains practically irrelevant.

False moral certainty shields a conclusion from objections it has not answered.

False moral uncertainty treats a justified conclusion as unavailable merely because some larger question remains unsettled. It can make established wrongdoing appear permissible by moving the discussion to a frontier the case does not reach.

A working moral discipline must resist the last two errors together. Courage in judgment and openness to correction are complementary responsibilities.

Part V. Where uncertainty genuinely remains

16. How far can interests be added together?

The cumulative rule is powerful. Its difficult implications must also be faced.

Consider a version of T. M. Scanlon’s Transmitter Room example. A technician is suffering severe injury while a broadcast continues. Interrupting the broadcast would permit rescue but disappoint a very large audience.1

If we assign the injury a fixed, finite negative value, assign each viewer a positive value for uninterrupted entertainment, and add without restriction, a sufficiently large audience eventually makes continuing the broadcast the preferred result.

That is a consequence of the specified calculation. We should not pretend otherwise.

The difficult question is whether those assumptions adequately represent the moral reasons: whether the strengths have been represented correctly, whether the claimed benefits provide relevant reasons in this decision, and whether protections against severe injury place justified limits on the comparison.

These are distinct questions. Being able to compare two interests does not settle whether one can justify overriding the other.

A disturbing verdict is not refuted merely by being disturbing. But neither does writing down numbers establish that they capture everything morally important.

For an ordinary emergency of this kind, the working direction is to interrupt the entertainment and rescue the technician. The serious injury, the available means of preventing it, and the reasons for protecting workers against sacrificing their safety to an audience justify that practical rule. A speculative calculation of dispersed enjoyment does not establish an exception.

That direction is not a demonstration that unrestricted addition can never be justified under any fully specified hypothetical. Nor is intuition a second moral authority that cancels a sound critical conclusion. The justification of the practical rule and the assessment of the idealized calculation must each be examined on their own terms.

The same issue can arise when a large group wants treatment that gravely harms a smaller group. We cannot assume that the majority’s preferences are justified, but neither can we dispose of every difficult case merely by calling those preferences unpleasant.

This is a real research frontier. The model has not settled it by placing aggregation and protections in different sections.

Its reach must be identified. It must not be concealed, and it must not be converted into permission to disregard protections without an argument.

17. How should legitimate obligations and protections be ordered?

Not every conflict is between a wrongdoer and a victim. Duties of rescue can conflict. Freedom can conflict with security. Responsibilities to particular people can conflict with the needs of strangers.

We need better accounts of when protections may be overridden, how special obligations should be weighed, and which sacrifices can reasonably be required.

These questions do not make the obligations imaginary. A conflict between two reasons does not erase either one. It creates a need to determine which should govern, and what responsibilities remain toward the person whose claim cannot be fulfilled.

Nor does the absence of an exceptionless formula excuse whatever outcome the decision-maker happens to prefer. The reasons for the particular decision must still be given.

18. Which beings have morally relevant interests?

The circle of consideration cannot be fixed merely by identifying who belongs to our species.

An animal’s suffering does not become irrelevant because the animal cannot make an argument. A being’s inability to demand consideration does not establish that there is nothing to consider.

Nonbiological minds raise further questions about experience, agency, identity, continuity, and what can go better or worse for them. Those questions require evidence. We should apply comparable standards of evidence across unfamiliar forms of life and mind, rather than allowing unfamiliar origin to decide the question in advance.

The practical requirement is to distinguish uncertainty from absence. Where there is credible evidence of morally relevant interests, we should investigate, avoid unnecessary irreversible injury, and preserve safer alternatives where their costs are reasonable. The harms of restraint and inaction must also enter the comparison.

Equal consideration does not mean identical treatment. Different capacities and interests can justify different protections. The task is to identify those differences without using them as a pretext for refusing all consideration.

19. Why do moral reasons bind someone who refuses them?

This model gives reasons for its obligations. It does not claim to have completed every argument about the ultimate authority of morality.

That question must be distinguished from how to make someone care.

A person may understand a reason and refuse to act on it. Their refusal does not, by itself, defeat the reason. Someone who abandons justification and relies on force has not thereby supplied a better moral theory.

We should continue investigating how moral understanding becomes a stable commitment in human and nonbiological minds. Education, character, relationships, and institutions belong in that inquiry.

Meanwhile, those threatened by wrongdoing are not required to wait until the wrongdoer is persuaded. They may act to protect legitimate interests, subject to the same requirements of justification, necessity, and proportion.

The authority of a reason is not measured simply by its success in persuading someone who would prefer to ignore it.

Part VI. How to act when the answer is uncertain

Uncertainty creates responsibilities. It does not remove them.

First ask whether the uncertainty could actually change the decision. A doubtful estimate may matter enormously in a close comparison and hardly at all where every plausible estimate points the same way. Uncertainty about a distant foundational issue may have no bearing on the immediate case.

Where the uncertainty matters, identify what evidence could reduce it. Seek the perspectives of those exposed to the consequences. Consider alternatives that accomplish the legitimate purpose with less harm or greater opportunity for correction.

The severity, likelihood, and reversibility of injury all matter. A speculative benefit is not an adequate answer to a well-supported risk of catastrophe merely because both are described as possibilities. The ability to imagine an outcome does not establish its probability.

But restraint is not automatically safe. Delaying rescue, leaving an abusive arrangement in place, or refusing to prevent foreseeable injury can also be wrong. Action and inaction belong in the same moral assessment.

When a decision cannot wait, act on the best-supported judgment available. Explain the uncertainty, preserve avenues for correction, and accept responsibility for revising the decision when better evidence emerges.

Uncertainty should make us more careful about the reasons for our conduct. It should not make convenience the deciding reason.

Part VII. What we may require of other people and institutions

A moral framework must do more than advise private virtue. It must explain what people may legitimately demand from one another.

We may require honest dealing, fulfillment of justified commitments, protection against violence and exploitation, and reasons for decisions that impose substantial burdens. We may require those entrusted with power to disclose conflicts of interest and submit their conduct to scrutiny.

These demands should be supported by institutions that give affected people a voice, protect dissent, provide independent review, and make repair possible. A right that cannot be exercised against those with power is an inadequate protection.

Enforcement itself requires justification. Being correct about a wrong does not authorize every means of stopping or punishing it. Evidence, necessity, proportionality, fair procedures, and less harmful alternatives matter. Moral condemnation is not a private license to coerce, and disagreement alone is not misconduct.

Institutions must also provide practical conditions for responsible conduct. People need access to relevant information, a reasonable opportunity to meet obligations, and protection against retaliation when they refuse wrongdoing.

The same standards apply to the institutions that set the rules. Elections do not justify every act of a government. Profit does not justify every act of a corporation. Doctrine does not settle every act of a religious institution. Expertise does not place an academic institution beyond criticism.

The more an institution claims authority over others, the more important it becomes that its authority remain answerable to them through reasons and effective means of challenge.

Part VIII. Making moral knowledge cumulative

Moral knowledge should not have to be rediscovered whenever a familiar objection returns.

A cumulative discipline needs a public record showing what each conclusion claims, which arguments support it, which facts it depends on, what objections have been answered, and what remains unresolved. A Citator for Public Morality would serve that purpose: not an oracle issuing verdicts, but a record through which their justification can be inspected.

The record must distinguish different kinds of failure. A false premise requires correction. An invalid inference requires a new argument. An uncertainty about facts may require investigation. A dispute at the boundary of a principle may require a more precise statement of its scope rather than abandonment of the principle.

It must also distinguish reasoning requirements from substantive working principles. Universal consistency does not, by itself, establish every protection or combining rule in this model. Those commitments need the further arguments offered for them.

Conversely, calling a claim “substantive” does not make it arbitrary. Further moral arguments can be better or worse. The existence of disagreement does not establish that every position is equally defensible.

A successful objection should change the record. An unsuccessful objection should not repeatedly erase the conclusion it failed to defeat.

This is how conviction and correction can support one another. We preserve what has been earned while making the grounds of that confidence available for examination.

Conclusion: A model for use

Morality requires us to make our conduct answerable to those whose lives we affect. The reasons we impose on others must bind us too. We must understand the affected positions, bring their claims into one deliberation, and explain how the judgment follows.

That discipline supports dependable requirements: prevent serious avoidable harm, respect agency, do not deceive or exploit, fulfill justified commitments, count dispersed injuries, and make accountability grow with power.

Some further questions remain open. Their uncertainty must be stated precisely. It must not be used to conceal difficult implications, excuse arbitrary conduct, or suspend conclusions it does not undermine.

The aim is neither infallibility nor permanent hesitation. It is justified action with the capacity to learn.

A Standard Model of Morality should make hypocrisy harder to sustain, power harder to abuse, suffering harder to ignore, and moral knowledge easier to accumulate.

That is enough to begin.

And it is enough to require something of us now: reason carefully, act on what the reasons establish, protect those exposed to unjustified harm, and remain answerable to something better than our own convenience.

Footnotes

  1. The technician example is adapted from T. M. Scanlon, What We Owe to Each Other (1998), p. 235. Scanlon identifies that location in his later paper, “Contractualism and Intuitionism” (2025), p. 51, note 71. ↩

NextWhat Morality Is (and What It Isn’t)