12.1 Moral Realism vs. Anti-Realism

Moral Realism vs Anti-realism

Moral realism and anti-realism represent two opposing answers to a foundational question in metaethics: does morality exist "out there" in the world, or is it something we create? Realists hold that objective moral facts exist independently of what anyone thinks, while anti-realists argue morality is subjective, constructed, or otherwise mind-dependent.

This debate matters because your position on it shapes how you think about nearly every other ethical question. Can we say another culture's practices are genuinely wrong? Is moral progress real? Does moral disagreement have a "right answer"? Your stance on realism vs. anti-realism determines how you'd approach all of these.

Moral Realism vs Anti-realism

Core Tenets of Moral Realism

Moral realism is the view that objective moral facts and properties exist independently of what anyone thinks about them. Three claims are central to this position:

• Mind-independence: Moral facts are features of reality itself, not products of any individual's or society's beliefs, attitudes, or feelings.
• Truth-aptness: Moral statements (like "torture is wrong") are capable of being objectively true or false, just as factual claims about the physical world are.
• Moral universalism, often associated with realism, holds that moral facts apply to all people at all times. Certain prohibitions (against murder, torture, etc.) hold regardless of cultural context or individual opinion.

Core Tenets of Moral Anti-realism

Moral anti-realism denies the existence of objective moral facts. On this view, moral judgments are mind-dependent and don't describe an objective moral reality. Instead, moral statements express subjective states like emotions, attitudes, or social conventions.

Anti-realism takes several distinct forms:

• Non-cognitivism holds that moral statements don't express beliefs at all and aren't truth-apt (they can't be true or false).
  • Emotivism claims moral statements merely express emotions or attitudes. Saying "stealing is wrong" is roughly equivalent to saying "Boo to stealing!"
  • Prescriptivism analyzes moral statements as disguised commands. "Stealing is wrong" functions more like "Do not steal!"
• Moral relativism, often associated with anti-realism, holds that moral truths are relative to the conventions of particular cultures or individuals. There are no universal moral standards, and moral judgments from within one framework can't be legitimately critiqued from outside it.

Arguments for and against Objective Morality

Arguments for Moral Realism

The argument from moral discourse. Moral realism best explains how we actually talk about morality. When people disagree about whether capital punishment is wrong, they seem to be disputing a factual matter, not just expressing clashing preferences. The language of morality ("that's truly wrong," "she was mistaken about that") presupposes that there are moral facts to be right or wrong about.

The argument from moral experience. Common moral intuitions and experiences point toward real moral facts. Feelings of guilt, moral indignation, and the pull of moral obligation are best explained by the existence of objective moral truths we're responding to. The phenomenology of morality (the way moral experience feels objective and binding) is itself evidence that it is objective.

The argument from moral progress. Over time, societies have converged on certain moral conclusions: the abolition of slavery, the extension of voting rights to women, the recognition of human rights. This pattern of moral progress resembles scientific progress and is best explained by the idea that we're gradually discovering real moral facts, not just changing our preferences.

Arguments against Moral Realism

The argument from queerness (J.L. Mackie). Objective moral facts would be metaphysically strange entities unlike anything else in the natural world. They aren't scientifically observable or empirically testable. If they exist, they'd have to be non-natural properties, and it's hard to explain what kind of thing they'd be or how we could come to know them.

Evolutionary debunking arguments. Natural selection shaped our moral intuitions to aid survival and reproduction, not to track objective moral truths. If the content of our moral beliefs can be fully explained by evolutionary pressures (e.g., we believe cooperation is good because cooperators survived), then we have no reason to think those beliefs reliably correspond to mind-independent moral facts.

The argument from moral disagreement. Widespread, persistent moral disagreement across cultures and historical periods is difficult for realists to explain. If objective moral facts exist, why hasn't humanity converged on them more fully? Anti-realists can more easily account for this diversity by treating morality as a human construction that naturally varies by context.

Implications of Moral Realism and Anti-realism

Implications of Moral Realism

• If realism is true, there are objective standards by which to judge actions. You can critique another culture's practices (say, honor killings) as objectively mistaken, not just different from your own preferences.
• Discovering objective moral truths becomes possible, which could help resolve moral dilemmas and disagreements in a principled way.
• Moral motivation may be stronger under realism, since people would be responding to genuine moral requirements rather than arbitrary preferences. Morality carries a special normative authority: you ought to act in line with moral facts whether you feel like it or not.
• Realism provides a secure foundation for moral critique and reform. Without it, some argue morality lacks the metaphysical grounding needed to support strong moral claims.

Implications of Moral Anti-realism

• If anti-realism is true, cross-cultural moral critique becomes harder to justify. Without an objective standard, on what basis can you say another culture's practices are wrong?
• Moral disagreement may be harder to resolve, since there are no objective facts to appeal to as a tiebreaker.
• Anti-realism seems to conflict with the surface grammar of moral language. When someone says "It is true that murder is wrong," they appear to be stating a fact and expressing a belief. Anti-realism must either reject this appearance as mistaken or reinterpret what moral statements actually do.
• On the other hand, anti-realism more naturally explains moral diversity. If morality is invented rather than discovered, you'd expect wide variation in moral views across cultures. Persistent disagreement makes more sense if there's no objective fact of the matter to settle it.

Forms of Moral Realism and Anti-realism

Naturalist vs. Non-Naturalist Moral Realism

These are two ways of being a moral realist, and they disagree about what kind of thing moral facts are.

• Naturalist moral realism holds that moral facts are reducible to or identical with natural, empirical facts. Moral properties like "goodness" could be defined in terms of natural properties like well-being, flourishing, or happiness. On this view, moral facts are part of the natural world and could in principle be studied scientifically.
• Non-naturalist moral realism holds that moral facts are sui generis (one of a kind) and not reducible to natural facts. Moral properties like "goodness" are real and objective but fundamentally distinct from any natural, descriptive property. They can't be defined in purely scientific terms.

Subjectivist vs. Intersubjectivist Anti-realism

These are two ways of being an anti-realist, and they disagree about where morality comes from.

• Subjectivist anti-realism grounds morality in the subjective states of individuals (feelings, emotions, attitudes). Moral judgments are expressions of personal preferences or sentiments. "X is immoral" means something like "I disapprove of X" or "Boo to X!"
• Intersubjectivist anti-realism grounds morality in the conventions or agreements of societies. Moral judgments express cultural constructs or social contracts. "X is immoral" means something like "X violates the norms of our culture."

In both cases, moral judgments aren't straightforwardly true or false in an objective sense.

Error Theory vs. Non-Cognitivism

These are two distinct anti-realist positions, and the difference between them is subtle but important.

• Error theory (associated with J.L. Mackie) agrees with realists that moral statements try to describe objective moral facts. The problem is that no such facts exist. So all positive moral claims ("murder is wrong," "generosity is good") are systematically false. Moral language aims at truth but always misses.
• Non-cognitivism takes a different route entirely. It holds that moral statements aren't even trying to state facts. They don't express beliefs and aren't truth-apt. "Murder is wrong" doesn't assert anything true or false; it expresses a negative attitude toward murder.