Moral Luck

Thomas Nagel and Bernard Williams (contemporary formulation)

Moral luck is the apparent paradox that although we think moral responsibility should depend only on what is under an agent’s control, our actual moral judgments systematically vary with outcomes and circumstances that are a matter of luck.

At a Glance

Quick Facts
Type
paradox
Attributed To
Thomas Nagel and Bernard Williams (contemporary formulation)
Period
1970s (with earlier roots in Kantian ethics and ancient philosophy)
Validity
controversial

1. Introduction

Moral luck concerns how factors outside an agent’s control appear to influence moral judgment, praise, blame, and assessments of character. The topic is often framed as a paradox: many philosophical traditions accept a control principle, according to which individuals should be morally assessed only for what they can control, yet everyday moral and legal practices seem systematically sensitive to luck in outcomes, circumstances, and character formation.

The contemporary discussion treats moral luck as a problem about moral responsibility and desert: whether and how an agent can be said to truly deserve praise or blame when their actions and character are shaped by luck. Proponents of the problem maintain that once one traces back the conditions that make an action possible—upbringing, social position, situational pressures, and sheer accident—luck appears to pervade morally relevant features of agency. Critics contend that this picture misdescribes either our moral concepts, our practices, or the nature of control.

Within this debate, philosophers distinguish several types of moral luck—typically resultant, circumstantial, constitutive, and causal—to mark different ways in which luck can influence moral standing. The discussion ranges from narrow questions about how we should treat negligent drivers with different outcomes, to broad challenges to the coherence of responsibility under determinism or radical responsibility skepticism.

The problem of moral luck has become a focal point for interactions among normative ethics, philosophy of action, free will theory, and legal theory. It is also used to test and refine views about virtue, character development, and the aims of moral and legal practices. No consensus has emerged; instead, a variety of responses attempt either to deny genuine moral luck, to revise the control principle, to reconceive responsibility in practice-based or consequentialist terms, or to question robust desert altogether.

2. Origin and Attribution

The contemporary problem of moral luck is most commonly attributed to Thomas Nagel and Bernard Williams, whose essays “Moral Luck” appeared in the mid-1970s and were later collected in Nagel’s Mortal Questions (1979) and Williams’s volume Moral Luck (1981).

Nagel and Williams are widely credited with transforming scattered worries about luck into a systematic paradox about moral responsibility, though they did so with different emphases and aims.

Key texts and dates

AuthorWork / EssayApprox. DateRole in Moral Luck Debate
Thomas Nagel“Moral Luck” in Mortal Questions1976/1979Canonical statement of the paradox and four-fold typology of moral luck
Bernard Williams“Moral Luck” in Moral Luck1976/1981Emphasizes luck’s role in integrity, character, and the “moral” standpoint
Michael ZimmermanAn Essay on Moral Responsibility1988Early, influential denial of genuine moral luck
Dana K. NelkinMoral Luck2013Systematic contemporary survey and critical reconstruction

Nagel’s essay explicitly formulates the paradox of moral luck: the apparent incompatibility between the control principle and our actual judgments. He introduces the now-standard classification of luck into resultant, circumstantial, constitutive, and causal forms, and argues that luck pervades each domain in ways that challenge the aspiration to isolate a purely “internal” moral core.

Williams’s essay, written independently but published alongside Nagel’s, uses historical and literary cases (e.g., Gauguin, the aftermath of war) to highlight how luck shapes a person’s life narrative, identity, and sense of what they can “live with.” He questions whether a highly abstract moral standpoint can make sense of these phenomena.

Subsequent literature typically treats Nagel and Williams as co-originators of the contemporary problem, even though both draw on older themes from Kant, Aristotle, and discussions of tragedy. Later authors have refined, defended, or criticized their formulations, but most contemporary treatments still use their essays as primary reference points.

3. Historical Context and Precursors

Although the label “moral luck” is recent, many earlier philosophers and literary traditions addressed related tensions between control, character, and fortune.

Kantian background

A central precursor is Immanuel Kant, who insists that moral worth depends on the good will and on maxims under the agent’s rational control, not on contingent outcomes:

“A good will is not good because of what it effects or accomplishes…”

— Immanuel Kant, Groundwork of the Metaphysics of Morals

Kant also acknowledges that empirical conditions—talents, temperament, external supports—are subject to fortune, yet he strives to separate the noumenal self and its moral law from such influences. Nagel and Williams explicitly present their problem as challenging this Kantian separation.

Ancient philosophy and tragedy

Classical Greek thought often portrays the moral significance of tyche (fortune) and moira (fate). In Aristotle’s Nicomachean Ethics, happiness and virtuous activity clearly depend on external goods and luck; yet Aristotle also connects virtue to stable character traits developed through habituation, themselves influenced by upbringing and circumstances.

Greek tragedy (e.g., *Sophocles’ Oedipus Rex) dramatizes cases where unintended consequences and inherited curses shape agents’ fates, raising questions about responsibility for outcomes far beyond their ken. Some interpreters see these works as early explorations of what would later be called resultant and circumstantial luck.

Early modern and post-war context

Early modern debates about free will, determinism, and providence (e.g., in Leibniz, Hume) already raise issues about how causal history and divine foreknowledge interact with responsibility, though usually framed in theological or metaphysical rather than “luck” terminology.

The specific 20th‑century context for Nagel and Williams includes:

Contextual FactorRelevance to Moral Luck
Post–World War II responsibility debatesAssessing complicity, obedience, and bystander roles
Existentialism (e.g., Sartre)Emphasis on choice in the face of contingency
Social psychology (Milgram, situationism)Evidence that behavior depends heavily on circumstance
Legal theory on negligence and riskFormal recognition of outcome-sensitive responsibility

Against this backdrop, Nagel and Williams articulate the problem of moral luck as a focused challenge to a strong, Kantian-inspired control requirement within an increasingly empirically informed ethics.

4. The Problem of Moral Luck Stated

The problem of moral luck arises from a clash between a widely endorsed control principle and common patterns of moral judgment that appear to violate it.

The control principle holds, roughly, that an agent is morally assessable only for what lies within their voluntary control; luck should not alter genuine desert. However, everyday moral practices and legal systems regularly treat agents differently when outcomes, circumstances, or character traits that they do not control diverge.

Typical cases involve agents who are alike in intention, effort, and degree of negligence, yet who differ in how things turn out due to chance. When a drunk but otherwise similar driver kills a pedestrian while another does not, observers often judge the first more severely. Proponents of the moral luck problem argue that such practices reflect not merely epistemic uncertainty or pragmatic policy, but a genuine tendency to let luck shape moral standing.

The problem can be summarized as follows:

ComponentContent
Control commitmentResponsibility tracks only what agents control
Luck pervasiveness claimOutcomes, circumstances, and character are deeply shaped by luck
Ordinary judgment observationOur actual judgments and practices are sensitive to luck in these ways
TensionIt is difficult to uphold both the control commitment and these judgments consistently

On this formulation, the paradox of moral luck is that both the control principle and our luck‑sensitive judgments seem deeply entrenched in moral thought, yet they appear jointly inconsistent once the role of luck is fully acknowledged. Efforts to resolve this tension generate a range of positions: some deny that luck ever truly affects responsibility, others revise the control principle, and still others reinterpret what responsibility amounts to. The rest of the debate explores, refines, and criticizes these options.

5. Types of Moral Luck

Contemporary discussions typically distinguish several kinds of moral luck to clarify how luck can be implicated in different aspects of moral evaluation. The now-standard taxonomy, first articulated by Thomas Nagel, includes resultant, circumstantial, constitutive, and causal moral luck.

Resultant moral luck

Resultant moral luck concerns the actual outcomes of actions. Two agents may display the same intention, care, or negligence, yet their actions lead to different results by chance (e.g., harm versus no harm). Observers often blame or praise them differently in light of these outcomes. Debates here focus on whether responsibility should track foreseeable risk only, or also the realized result.

Circumstantial moral luck

Circumstantial moral luck involves the situations and opportunities an agent faces. Some people are placed in extreme circumstances—war, oppressive regimes, emergencies—that test courage or integrity; others live relatively untested lives. Philosophers ask whether and how we can morally compare agents whose dispositions and choices are revealed under such different conditions.

Constitutive moral luck

Constitutive moral luck is luck in the traits, dispositions, and capacities that constitute a person’s character: temperament, emotional reactivity, intelligence, propensity toward empathy or aggression, and so forth. These features are largely shaped by genetics and early environment, both outside the agent’s control. The question is whether agents can be truly deserving of praise or blame for actions that flow from such constitutive endowments.

Causal moral luck

Causal moral luck concerns the broader causal history that leads to an agent’s choices, including remote antecedent events and deterministic or indeterministic processes in nature. If every action traces back to factors beyond one’s control, some argue that this undermines responsibility at a fundamental level; others contend that local control is sufficient.

Comparative overview

TypeFocus of LuckCore Question
ResultantOutcomesShould realized harm/benefit affect blame/praise?
CircumstantialSituations facedAre untested or untempted people less/more virtuous?
ConstitutiveCharacter traitsCan one deserve blame for traits one did not choose?
CausalCausal backgroundDoes lack of ultimate control void responsibility?

This classification structures much of the contemporary literature, with some authors treating different types as more or less threatening to moral responsibility.

6. Canonical Examples and Thought Experiments

Discussions of moral luck frequently rely on stylized cases to elicit and test intuitions about the role of luck in moral assessment.

Negligent drivers

A central example involves two equally negligent drivers, both slightly intoxicated and inattentive. By sheer chance, one encounters no pedestrians and arrives home safely; the other encounters a pedestrian who unexpectedly steps into the road and is killed. Ordinary judgments tend to blame the second driver more heavily, label them a “killer,” and perhaps subject them to harsher legal penalties. This is presented as a case of resultant moral luck.

Variants explore different levels of negligence, foreseeability, and outcome severity (e.g., minor injury versus death) to test whether and how outcome differences alter perceived blameworthiness.

Successful and unsuccessful attempts

Another common scenario contrasts a would‑be murderer whose bullet misses due to a sudden gust of wind with an otherwise identical agent whose bullet hits. Again, observers often treat the successful murderer as more blameworthy, despite identical intention and effort. Critics of moral luck suggest that, strictly speaking, their moral status is the same, even if legal or pragmatic treatment diverges.

Circumstantial tests of character

Cases of circumstantial luck often invoke individuals who lived under oppressive regimes versus those who did not. For example, some citizens of Nazi Germany faced choices about resistance, collaboration, or risk to their lives, whereas contemporaries in peaceful democracies were never so tested. Philosophers ask whether it is appropriate to morally compare the “ordinary decent” person who never faced such choices with those who either resisted heroically or succumbed to complicity.

Life-shaping choices and moral luck

Bernard Williams’s discussion of Gauguin—who abandons his family to pursue art—illustrates how later success or failure can retrospectively alter how we morally assess a risky, morally problematic choice. If Gauguin becomes a great artist whose work benefits many, observers may view the decision differently than if his artistic efforts had failed. This is sometimes cited as resultant and constitutive luck combining in a single life story.

Comparative table

Example TypeLuck InvolvedPhilosophical Use
Drunk drivers / hit-and-runResultantTests outcome-sensitivity of blame and legal response
Failed vs. successful murderResultantProbes whether intention or result grounds responsibility
Citizens under oppressive regimeCircumstantialExplores fairness of comparing agents across contexts
Gauguin-style life gambleResultant + constitutiveExamines retrospective moral assessment of risky choices

These examples provide a shared reference set across the literature, though interpretations of what they show diverge sharply.

7. Logical Structure and Core Tension

Many philosophers treat the problem of moral luck as having a relatively clear logical structure, built around an apparent inconsistency among widely held commitments.

Core premises

A common reconstruction uses the following components:

  1. Control Principle: An agent is morally assessable (in terms of desert) only for what is under their voluntary control.
  2. Pervasiveness of Luck: Key determinants of action and character—outcomes, circumstances, traits, and causal histories—are substantially shaped by luck, i.e., by factors beyond the agent’s control.
  3. Ordinary Moral Judgments: Our everyday moral and legal practices routinely assign different degrees of praise, blame, and status partly in light of these luck-involving factors.
  4. Consistency Requirement: Our moral system should be internally coherent; it should not affirm both a strong control principle and practices that systematically violate it.

From these, proponents argue that we face a forced choice: either significantly revise the control principle or substantially revise ordinary judgments and practices.

The paradoxical tension

The core tension stems from the fact that both the control principle and our luck‑sensitive judgments appear deeply intuitive and normatively important:

CommitmentMotivation
Control-based responsibilityRespects autonomy, fairness, and the idea of “desert”
Luck-sensitive judgmentsReflect harm suffered, social expectations, and lived moral experience

Philosophers disagree about how precise the inconsistency is. Some develop the tension into a formal inconsistency proof, suggesting that no theory can simultaneously uphold all components without modification. Others consider it a pressure point rather than a strict contradiction, inviting refinement of concepts such as “control,” “luck,” and “responsibility.”

Attempts to resolve the tension typically proceed by:

  • Weakening or reinterpreting the control principle.
  • Recasting the role of luck-sensitive judgments as merely epistemic or pragmatic.
  • Relocating responsibility within broader social or narrative frameworks where the paradox is said to dissolve.
  • Questioning robust desert-based responsibility altogether.

The rest of the debate can be mapped by how different authors negotiate this structural conflict.

8. The Control Principle Examined

The control principle is central to the moral luck debate. It is often formulated as:

An agent is morally assessable only for what is under their control.

Philosophers interpret both “control” and “assessable” in different ways, leading to a range of versions from very strict to more moderate.

Varieties of the control principle

VersionRough FormulationTypical Proponents / Uses
Strong desert-basedGenuine blame or praise supervenes solely on what is fully under the agent’s voluntary controlKantian and some libertarian views
Moderate / local controlResponsibility requires suitable control over the action, but not over all background causesMany compatibilists, risk-based theories
Epistemic responsibilityWe should judge in light of what we reasonably take to be under the agent’s controlSome practice-based and legal approaches

Some authors distinguish direct control (e.g., intentional action here and now) from indirect control (e.g., past opportunities to shape one’s character), debating whether indirect control suffices to ground responsibility despite pervasive luck.

Motivations for the control principle

Support for the control principle is typically grounded in:

  • Fairness: It is thought unfair to hold someone responsible for what they could not help.
  • Autonomy and agency: Moral responsibility is tied to being an agent who can choose and respond to reasons.
  • Desert: Strong notions of blame and praise seem to presuppose that the agent truly “owned” the action in a robust sense.

Challenges and refinements

Proponents of moral luck argue that once one acknowledges how extensively luck shapes circumstances, traits, and even choices, the strong version of the control principle becomes difficult to maintain without drastically revising our practices.

Responses include:

  • Narrowing the scope: Limiting the control principle to certain core attributions (e.g., judgments of character) while permitting outcome-sensitivity in other domains (e.g., legal penalties).
  • Graded control: Treating control as a matter of degree, allowing responsibility to scale rather than being all-or-nothing.
  • Relocating responsibility: Some suggest that responsibility may track “quality of will” or responsiveness to reasons, which might be preserved even in the presence of significant luck.

The examination of the control principle thus functions as a diagnostic tool: different ways of revising or defending it lead to distinct positions on whether and how moral luck is genuine.

9. Nagel’s and Williams’s Accounts Compared

Although Thomas Nagel and Bernard Williams both foreground the role of luck in morality and use the phrase “moral luck,” their accounts differ in focus, method, and aims.

Shared themes

Both authors:

  • Question a Kantian ideal in which moral judgment depends solely on what is under the agent’s control.
  • Emphasize that luck permeates aspects of agency we ordinarily treat as morally significant.
  • Use examples from everyday life and from history (e.g., war, political complicity) to illustrate the pervasiveness of luck.

Key differences

AspectNagelWilliams
Central questionCan moral responsibility be reconciled with the control principle given pervasive luck?Can a purely “moral” standpoint do justice to the role of luck in a person’s life and character?
MethodAnalytic reconstruction of a paradox; typology of luckHistorical, literary, and phenomenological analysis
Focus of luckResultant, circumstantial, constitutive, causal luck as threats to responsibilityLuck in life projects, integrity, and identity
Attitude to moralitySees a tension within morality’s own aspirations; worries about its coherenceSuggests that an overly moralized perspective may distort ethical understanding

Nagel articulates the paradox by juxtaposing the control principle with the observation that moral judgment inescapably incorporates luck-laden elements. He tends not to offer a definitive resolution, instead stressing the depth of the tension.

Williams, by contrast, uses cases such as Gauguin and individuals implicated in historical atrocities to argue that luck shapes what a person can rightly regret, endorse, or “identify with.” He suggests that an abstract morality of impartial principles may be unable to accommodate these features, and he introduces notions like “agent-regret” to capture responses that are more tightly linked to luck and outcome than standard moral blame.

Some interpreters view Nagel as a more internal critic of morality—pressing a paradox within its own terms—while Williams is taken as encouraging a broader ethical outlook that relativizes the authority of “morality” in favor of considerations such as character, history, and personal projects. The combined influence of both essays, however, set the agenda for nearly all subsequent discussions of moral luck.

10. Moral Luck, Character, and Virtue Ethics

The topic of moral luck intersects closely with virtue ethics, which emphasizes character, habituation, and flourishing rather than isolated acts or rules. Virtue ethics must confront the fact that character itself appears highly susceptible to luck.

Luck in character formation

Virtue ethicists, drawing on Aristotle, typically hold that virtues are developed through upbringing, education, and practice within a supportive community. These formative conditions—family, culture, socioeconomic status—are largely a matter of constitutive and circumstantial luck. This raises questions:

  • To what extent can people be praised or blamed for virtues and vices they were more or less lucky to develop?
  • Is full virtue available only to those who enjoy fortunate external conditions?

Some readings of Aristotle accept that happiness and even the exercise of virtue are partially hostage to fortune, thus building luck into the ethical picture rather than treating it as an anomaly.

Untested virtues and circumstantial luck

Virtue ethics also addresses circumstantial luck: some individuals never face severe temptations or crises that would reveal whether their apparent virtues are stable. This leads to distinctions between:

ConceptDescription
Manifest virtueVirtues actually displayed in action
Latent or untested virtueDispositions that might exist but have not been tested
Apparent virtueTraits that seem virtuous under mild conditions but might fail under pressure

Debates concern whether untested individuals can be counted as fully virtuous, and whether this dependence on circumstances undermines the fairness of character-based evaluations.

Tragic luck and moral assessment

Traditions influenced by Greek tragedy and neo-Aristotelian ethics explore how luck can make a life ethically tragic without necessarily implying fault—for instance, when a generally virtuous agent causes great harm due to unforeseen circumstances. Some virtue ethicists treat such cases as revealing that ethical evaluation should include categories beyond blame and praise, such as tragedy, loss, or misfortune.

Others argue that a virtue-based framework can accommodate moral luck more naturally than act- or rule-focused theories by situating actions within a broader narrative of character development, social environment, and human vulnerability. Critics respond that if character and its expression are deeply luck-laden, then virtue-based praises and criticisms may face the same fairness concerns that motivate the control principle.

11. Moral Luck and Responsibility in Law

Legal systems provide a rich domain for examining how moral luck interacts with responsibility, because law explicitly differentiates sanctions based on outcomes, circumstances, and mental states.

Outcome sensitivity in criminal law

In many jurisdictions, the difference between attempted and completed crimes carries substantial differences in punishment, even when intention and effort are similar. Likewise, negligent behavior that results in death (e.g., manslaughter) is often treated more severely than identical negligence that produces no harm. These practices appear to embody resultant moral luck.

Defenders of such outcome-sensitivity argue that law must take actual harm into account for reasons including victim compensation, deterrence, and expressive condemnation. Critics suggest that, insofar as legal responsibility purports to track moral responsibility, such distinctions reflect or reinforce problematic forms of moral luck.

Negligence, risk, and foreseeability

Legal doctrines of negligence and duty of care hinge on what risks were foreseeable and what a “reasonable person” would have done. Some theorists maintain that this framework mitigates the role of sheer luck by focusing on ex ante risk rather than ex post outcome, even if outcomes still affect classification and sentencing.

Circumstantial and constitutive factors

Law sometimes adjusts responsibility in light of circumstantial and constitutive conditions—e.g., duress, insanity defenses, or reduced capacity. These adjustments acknowledge that extreme circumstances or psychological conditions can undermine the control necessary for culpability, resonating with philosophical concerns about circumstantial and constitutive luck.

Practice-based and expressive views

Some legal philosophers adopt practice-based or expressive accounts of criminal liability, according to which the function of law is not to mirror an independent desert-based moral ledger but to regulate behavior, provide public assurance, and express societal condemnation. On such views, legal reliance on luck-laden outcomes may be justified even if, at the level of pure desert, agents are equally culpable.

This divergence between legal and purely moral responsibility figures prominently in debates about whether the law should aim to track moral responsibility as closely as possible, or whether it may legitimately incorporate luck in pursuit of independent institutional aims.

12. Denial of Moral Luck and Control-Based Responses

One family of responses to the moral luck problem denies that genuine moral luck exists, at least in the sense of luck altering an agent’s true degree of moral responsibility. These views usually preserve a robust control principle.

Kantian and will-based approaches

On Kantian-inspired accounts, moral worth depends solely on the good will and on maxims under the agent’s rational control. Luck may affect empirical outcomes or whether a person can act at all, but it does not alter the evaluation of the will itself. Two agents who choose the same maxim with the same quality of will are, on this view, equally blameworthy or praiseworthy, whatever differences in results or circumstances.

Zimmerman and the invariance of responsibility

Philosophers such as Michael J. Zimmerman argue that responsibility is invariant across luck differences once one fixes all facts about the agent’s internal state (intentions, beliefs, level of care). Our tendency to blame the unlucky driver more harshly is, on this view, an epistemic or pragmatic distortion: we see the outcome and infer something about negligence or character, but strictly speaking responsibility supervenes only on internal factors.

Strategies for denying moral luck

Denial-of-luck theorists typically employ one or more of the following strategies:

StrategyBasic Idea
Supervenience on willResponsibility depends only on internal quality of will
Epistemic reinterpretationOutcome-based judgments reflect evidential bias, not true moral difference
Pragmatic separationLegally or socially different treatment is justified for practical reasons, not because responsibility differs
Control principle priorityWhere ordinary judgments conflict with the control principle, revise judgments, not the principle

Some proponents allow that causal or constitutive luck raises deep metaphysical questions about free will but maintain that, given whatever control agents do have, luck in outcomes or circumstances does not affect their responsibility within that domain.

Critics of denial-based approaches contend that they either misdescribe ordinary moral concepts, underestimate the depth of outcome-sensitivity in our practices, or fail to address forms of luck (especially constitutive and causal) that seem to undermine control at a more fundamental level.

13. Revisionist, Practice-Based, and Consequentialist Approaches

Another cluster of responses accepts that luck permeates moral life but seeks to revise or reconceptualize responsibility so that this is no longer paradoxical.

Revisionist control principles

Some philosophers argue that the traditional control principle is too strict. They propose more nuanced accounts where responsibility requires sufficient rather than perfect control, often tied to foreseeable risk or typical consequences of actions. On such views, it can be appropriate to factor outcomes into responsibility judgments when those outcomes are the kind of thing the agent risked bringing about, even if the specific result was not controlled.

Examples include accounts that treat responsibility as gradational and context-sensitive, or that distinguish between different “faces” of responsibility (e.g., attributability, answerability, liability), some of which are more luck-sensitive than others.

Practice-based theories

Practice-based or conventionalist theories, influenced by P. F. Strawson, hold that responsibility is partly constituted by social practices of reactive attitudes (e.g., resentment, gratitude). On these views:

  • The justification of responsibility practices depends on their role in interpersonal relationships and social life.
  • Outcome sensitivity may be warranted insofar as it shapes expectations, trust, and the meaning of our attitudes.
  • The question “Does luck really affect desert?” is reframed as “What responsibility practices can we reasonably demand of one another?”

Some theorists emphasize the expressive and communicative function of blame and punishment, allowing that luck-sensitive responses can be appropriate without implying metaphysically luck-based desert.

Consequentialist approaches

Consequentialist or forward-looking accounts ground responsibility in its effects—deterrence, rehabilitation, social coordination—rather than in backward-looking desert. From this standpoint:

  • Differential treatment of unlucky and lucky agents may be justified if it promotes beneficial outcomes (e.g., deterrence) or communicates norms.
  • The puzzle about luck is attenuated because the central question becomes pragmatic: Which responsibility attributions and sanctions produce the best consequences?
Approach TypeCore Idea about ResponsibilityAttitude to Moral Luck
RevisionistSoften/reshape control requirementAccept some luck as legitimately responsibility-affecting
Practice-basedResponsibility constituted by social norms/attitudesLuck’s role determined by functions of practices
ConsequentialistResponsibility justified by forward-looking valueLuck relevant insofar as it affects outcomes of practices

Critics of these approaches sometimes argue that they sidestep rather than solve the original paradox by downplaying or abandoning desert-based responsibility.

14. Skeptical and Error-Theoretic Implications

Some philosophers take the pervasiveness of luck to support skepticism about moral responsibility in a robust, desert-entailing sense. On these views, the correct conclusion from the moral luck problem is not to adjust the control principle or reinterpret practices, but to accept that no one is ever morally responsible in the way we commonly suppose.

Responsibility skepticism

Authors such as Galen Strawson and Derk Pereboom argue that, because agents lack ultimate control over their character, motives, and even choices—given their causal histories—no one can satisfy the conditions required for genuine basic desert. Moral luck considerations, especially constitutive and causal luck, figure prominently in these arguments:

  • Agents do not choose the factors that shape who they are.
  • Any attempt to ground responsibility in earlier choices simply pushes the problem back to conditions equally governed by luck.

Error theory about responsibility

Some skeptical positions are explicitly error-theoretic: they claim that ordinary responsibility attributions purport to describe a kind of non-luck-based desert that nothing actually instantiates. Our practices may persist for practical reasons, but the belief that individuals truly deserve praise or blame in a way immune to luck is mistaken.

Moderate skepticism and revisionism

Other philosophers adopt more moderate forms of skepticism, suggesting that while some forms of responsibility (e.g., answerability, moral appraisal) may survive, the strongest retributive or desert-based conceptions cannot. Moral luck is used to argue that:

  • Harsh blame and punishment are rarely, if ever, justified.
  • We should reinterpret many responsibility practices in forward-looking or expressive terms.

Points of contention

Critics of skeptical and error-theoretic implications raise several challenges:

  • Some contend that skepticism overgeneralizes from strong notions of control, ignoring more modest compatibilist accounts.
  • Others argue that abandoning desert-based responsibility is psychologically and socially costly, and that moral luck can be managed within non-skeptical frameworks.
  • Still others question whether skepticism fully escapes luck, since beliefs and commitments about skepticism itself are also products of luck.

The skeptical strand remains a significant, if controversial, direction in the moral luck literature, placing pressure on any attempt to reconcile strong responsibility with pervasive luck.

15. Connections to Free Will, Determinism, and Epistemic Luck

Moral luck debates intersect with broader discussions of free will and determinism and have analogues in epistemology.

Free will and determinism

Causal moral luck overlaps with the free will problem: if every action is the result of a prior causal chain beyond the agent’s control, some argue that this undermines the control needed for responsibility. Here the moral luck discussion connects to:

  • Compatibilism: the view that free will and responsibility can coexist with determinism. Compatibilists often argue that local control (e.g., reasons-responsiveness, absence of coercion) suffices, even if ultimate causal luck is inescapable.
  • Incompatibilism: the view that determinism precludes free will. Incompatibilists may see moral luck considerations as supporting responsibility skepticism unless some form of indeterministic or agent-causal freedom is available.
PositionStance on DeterminismTypical View on Causal Luck
CompatibilismCompatible with responsibilityCausal luck is inescapable but not responsibility-undermining
IncompatibilismIncompatible with responsibilityCausal luck threatens responsibility unless agents have special non-luck-based control

Debates concern whether moral luck adds anything new to these longstanding discussions or simply reframes them in terms of fairness and desert.

Epistemic luck

In epistemology, epistemic luck refers to cases where a belief is true due to luck, raising questions about whether it counts as knowledge. Classic Gettier cases show that a person’s justified true belief can be true merely by luck, leading philosophers to refine conditions for knowledge.

Many authors note parallels between moral and epistemic luck:

  • Both involve assessments (moral or epistemic) that seem undermined when success depends heavily on factors beyond the agent’s control.
  • Both engender attempts to define forms of agency (rational control, responsibility for belief) that exclude “bad” luck while tolerating some forms of “benign” luck.

Some theorists explore whether strategies used to handle epistemic luck—such as reliabilism or safety conditions—have analogues in ethics, for example by focusing on the reliability of an agent’s dispositions or on the robustness of their reasons-responsiveness across nearby possible situations.

Others caution against overextending the analogy, pointing out differences between moral and epistemic evaluation (e.g., the centrality of harm and desert in morality versus truth and justification in epistemology). Nonetheless, the parallel debates often inform each other, especially when considering how far control and luck can coexist in judgments of responsibility and knowledge.

16. Contemporary Debates and Open Questions

Current work on moral luck spans multiple subfields and remains highly contested. Several key debates and unresolved issues structure the contemporary landscape.

Scope and depth of moral luck

Philosophers disagree about how pervasive moral luck is:

  • Some hold that only resultant and perhaps circumstantial luck pose challenges, manageable by modest adjustments to legal and moral practice.
  • Others argue that constitutive and causal luck reach so deeply into character and choice that they threaten responsibility at its core.

An open question is whether a principled line can be drawn between benign and problematic forms of luck in moral evaluation.

Nature and demands of control

Another central debate concerns what kind of control is required for responsibility:

  • Is guidance control or reasons-responsiveness sufficient, as many compatibilists claim?
  • Must agents have alternative possibilities or some “up-to-them-ness” that is insulated from luck?
  • Can control be understood in gradational or relational terms that accommodate pervasive luck?

These questions drive ongoing work at the intersection of moral luck and free will theory.

Desert, practices, and revision

Philosophers also dispute how much weight to give to desert-based intuitions versus the functions of responsibility practices:

  • Should apparent clashes between desert and luck prompt radical revision of our practices?
  • Or should practices such as blame, punishment, and praise be justified on forward-looking or expressive grounds, even if they do not track pure desert?

Open questions include whether a coherent “hybrid” view can integrate desert-based and practice-based considerations without collapsing into one or the other.

Empirical and interdisciplinary contributions

Recent work draws on psychology, neuroscience, and experimental philosophy to examine how people actually reason about luck and responsibility. Findings that lay judgments are strongly outcome-biased prompt further questions:

  • Should philosophical theories accommodate these patterns or critically correct them?
  • How do cultural and developmental factors shape intuitions about moral luck?

Applications and extensions

Ongoing debates explore moral luck in applied domains such as climate ethics, medical malpractice, war, and structural injustice, examining how systemic factors and collective agency complicate traditional individual-focused luck discussions.

Collectively, these debates leave open whether a fully satisfactory, widely acceptable resolution of the moral luck problem is possible, or whether the tension it highlights is a permanent feature of moral thought.

17. Legacy and Historical Significance

The moral luck debate has had a substantial impact on contemporary moral philosophy and related fields, shaping both terminology and research agendas.

Influence on ethics and responsibility theory

Nagel’s and Williams’s formulations helped shift discussions of moral responsibility away from purely abstract questions about free will toward more fine-grained analyses of control, risk, and luck. The now-standard vocabulary of resultant, circumstantial, constitutive, and causal moral luck is widely used in textbooks, anthologies, and advanced research.

The problem of moral luck has also played a central role in:

  • Refining compatibilist and incompatibilist positions.
  • Motivating responsibility skepticism and revisionist theories.
  • Prompting closer attention to the role of outcomes and risk in both moral and legal evaluation.

Cross-disciplinary reach

Beyond philosophy, the concept of moral luck has influenced:

FieldInfluence of Moral Luck
Legal theoryAnalyses of negligence, strict liability, and outcome-based sentencing
Political philosophyDiscussions of luck egalitarianism and responsibility for social disadvantage
PsychologyStudies of outcome bias and folk intuitions about blame
Literature and filmInterpretations of tragic characters and narratives of fate and chance

These cross-disciplinary connections have reinforced the idea that luck is not a marginal issue but a pervasive feature of human evaluation.

Position in the history of ethics

Historically, the moral luck debate marks a significant moment in late 20th‑century ethics, reflecting:

  • A reaction against highly idealized, control-centric moral theories.
  • A renewed engagement with themes from ancient ethics and tragedy concerning vulnerability and fortune.
  • An increasing openness to empirical findings about human behavior and situational influence.

Some commentators see the moral luck discussion as part of a broader move from principle-centered to agent- and practice-centered ethics, where character, context, and social practices receive heightened attention.

Continuing significance

Even without a settled solution, the notion of moral luck has become a standard tool for probing questions about fairness, agency, and desert. It serves as a test case for new theories of responsibility and as a lens through which to reassess traditional doctrines in moral, legal, and political thought. Its enduring presence in contemporary debates suggests that the issues it raises—about how far we can separate who we are from what happens to us—remain central to philosophical reflection on the human condition.

Study Guide

Key Concepts

Moral Luck

The phenomenon where an agent’s moral standing or responsibility appears to depend on factors beyond their control, such as outcomes, circumstances, character, or causal history.

Control Principle

The principle that an agent is morally assessable only for what is under their voluntary control; genuine desert should not be altered by mere luck.

Resultant Moral Luck

Luck in the actual outcomes of actions, where agents with similar intentions, care, and negligence are judged differently because of how things turn out (e.g., one driver kills a pedestrian, the other does not).

Circumstantial Moral Luck

Luck concerning the situations and opportunities an agent faces—such as living under an oppressive regime versus a peaceful democracy—which affects whether certain virtues or vices are ever tested.

Constitutive Moral Luck

Luck in the traits, dispositions, and capacities that make up an agent’s character (e.g., temperament, empathy, intelligence), which are largely shaped by genetics and upbringing rather than deliberate choice.

Causal Moral Luck

Luck concerning the prior causal determinants of an agent’s actions, including distant past events and possibly deterministic processes, which shape what choices are available and how they are made.

Desert-Based Responsibility

A conception of responsibility according to which agents genuinely deserve praise or blame in a backward-looking sense, independently of forward-looking or purely pragmatic considerations.

Practice-Based Theory of Responsibility

An approach that grounds responsibility in social practices, norms, and reactive attitudes (e.g., resentment, gratitude) rather than in a purely metaphysical relation of control.

Discussion Questions
Q1

In the case of two equally negligent drivers where only one kills a pedestrian, should we regard them as equally morally blameworthy? Why or why not?

Q2

How do Nagel’s four types of moral luck (resultant, circumstantial, constitutive, causal) differ in how threatening they are to moral responsibility? Are any of them benign or manageable?

Q3

Compare Nagel’s and Williams’s treatments of moral luck. To what extent is Williams questioning the authority of ‘morality’ itself, rather than just highlighting a paradox within it?

Q4

Can a virtue ethicist consistently praise or blame character traits if those traits are largely the result of constitutive and circumstantial luck?

Q5

Should criminal law aim to track ‘true’ moral responsibility as closely as possible, or is it legitimate for legal responsibility to diverge from desert because of social aims (deterrence, expression, protection)?

Q6

Is it coherent to maintain a strong desert-based notion of responsibility while also accepting that causal moral luck (e.g., determinism, deep causal histories) is inescapable?

Q7

Do practice-based theories of responsibility (inspired by Strawson) genuinely resolve the paradox of moral luck, or do they simply shift our attention away from desert? How should we evaluate this shift?

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APA Style (7th Edition)

Philopedia. (2025). Moral Luck. Philopedia. https://philopedia.com/arguments/moral-luck/

MLA Style (9th Edition)

"Moral Luck." Philopedia, 2025, https://philopedia.com/arguments/moral-luck/.

Chicago Style (17th Edition)

Philopedia. "Moral Luck." Philopedia. Accessed December 11, 2025. https://philopedia.com/arguments/moral-luck/.

BibTeX
@online{philopedia_moral_luck,
  title = {Moral Luck},
  author = {Philopedia},
  year = {2025},
  url = {https://philopedia.com/arguments/moral-luck/},
  urldate = {December 11, 2025}
}