Argument

Morality Is Emergent Objection Defeater

Intro

When someone argues that real right and wrong point to God, a common reply is: "Morality is just an emergent property. Put social animals with big brains together for long enough and morality appears, the way wetness appears when water molecules get together. No God needed."

Part of that is true. Our sense of right and wrong did develop. Children learn it, cultures shape it, and our brains are involved in every moral thought. Christians can agree with all of that.

But the reply mixes up two different things. One is moral awareness: our feelings, beliefs and habits about right and wrong. The other is moral truth: the fact that torturing a child for fun really is wrong, whether anyone feels it or not. Emergence can tell a story about how the awareness came about. It does not explain what makes the truth true.

And "emergent" itself has two meanings. If morality emerges the ordinary way, the way wetness does, then it is nothing more than facts about brains and groups, and facts about what is never add up to what we ought to do. If it emerges the strong way, as something really new that nature alone does not account for, then the objector has granted that reality contains more than nature. Either way, the question of where moral obligation gets its authority is still open.

Quick reply: "Do you mean our moral beliefs emerged, or that moral truths themselves emerged? Because explaining why we believe murder is wrong is not the same as explaining why murder is wrong."

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Cheatsheet

The 30-second reply: I agree our moral sense developed. Brains, families and cultures all shaped it. But that explains moral beliefs, not moral truth. So which do you mean emerged? If moral facts are weakly emergent, they are just facts about nerves and groups, and no pile of facts about what is ever adds up to an "ought." If they are strongly emergent, something genuinely beyond nature has appeared, and you have given up naturalism. Either way, you still owe an answer to one question: who or what makes an obligation binding on me?

The 5 fast facts:

1. Emergence has two senses. Chalmers separates weak emergence, where higher-level truths are unexpected but follow from the lower level, from strong emergence, where they do not follow even in principle ("Strong and Weak Emergence," 2006).
2. Hume's gap. Hume noticed moralists sliding from "is, and is not" to "an ought, or an ought not" without saying how (Treatise III.1.1). Emergence talk does not close that gap; it renames it.
3. The naturalist's own critic. Sharon Street, a naturalist, argues that if Darwinian forces shaped our values, realists must either admit "most of our evaluative judgements are off track" or explain the match in a way she says fails "on scientific grounds" (Philosophical Studies 127, 2006, pp. 109-166).
4. The best atheist realist still needs a brute. Erik Wielenberg holds that natural properties make moral ones by a relation he treats as brute, "a robust causal relation analogous to the relation that God is said to bear" to creation, as Terence Cuneo summarizes him (Notre Dame Philosophical Reviews, 2015).
5. Obligation is personal. Robert Adams argues that obligation is social in nature, constituted by the demands of another, and that the fitting source of moral demands is a loving God (Finite and Infinite Goods, 1999, Part Three).

The 3 strongest counter-moves:

• "Beliefs or truths?" Make the objector say which one emerged. Most will mean beliefs, which the theist already grants.
• "Weak or strong?" If weak, ask for the step from facts about brains to an obligation. If strong, ask how a naturalist got something nature does not account for.
• "Who is owed?" An obligation is owed to someone. Ask whom we wrong when we do wrong in secret, and how a property can be owed anything.

Concessions to make freely (do not over-claim):

• Yes, moral psychology develops, and it has a history in our biology and cultures.
• Yes, many atheists are morally serious, and some hold that moral facts are objective. The argument is about grounding, not about who behaves well.
• Yes, emergent things can be real. Love, pain and time are real even though none of them is a lump of matter. The question is not whether morality is real, but what makes its demands authoritative.

What NOT to defend:

• Do not say atheists cannot know right from wrong. Knowing and grounding are different questions (Romans 2:14-15 expects people without the law to know it).
• Do not claim that evolution had no part in shaping moral feelings.
• Do not claim that emergence is a confused idea. Weak emergence is respectable science.

The closing line: "Emergence can explain why I feel I ought not lie. It cannot tell me why I really ought not, or to whom I owe it."

In full

Defeater for the objection: "Morality is an emergent property of evolved social brains. Moral sentiments, norms and judgments arise from the interaction of biology, psychology and culture, much as wetness arises from water molecules or traffic jams from drivers. Since emergence explains morality, the Moral Argument fails: objective moral values do not require God."

The objection is attractive because its first half is true. Moral cognition clearly has a developmental and evolutionary history, and theism has no stake in denying it. The work of the defeater is to show where the true half stops.

This page takes the objection in its emergence form. Its neighbors handle related versions: Evolution and Empathy Ground Morality (Defeater) answers the menu of secular grounds (evolution, empathy, consensus, human needs) and Michael Ruse's admission that evolved ethics is an illusion; Atheist Moral Realism Defeater answers brute, non-theistic moral facts; Moral Anti-Realism Defeater answers the atheist who denies moral facts altogether. The parallel emergence objections about mind are answered at Consciousness Emerges from Neurons Objection Defeater and Intelligence Is Emergent Objection Defeater, and this page uses the same weak-versus-strong distinction.

The defeat structure has five steps. (1) Disambiguation of what emerged: moral awareness (beliefs, feelings, norms) versus moral facts (what is actually right, wrong and obligatory). (2) The granted half: the emergence of moral awareness is common ground, and it is neutral between theism and naturalism, so it cannot defeat the moral argument. (3) Weak emergence of moral facts: if moral facts are fully fixed by and derivable from descriptive facts, the is-ought gap and the open-question test apply, and the most sophisticated version of this view (Cornell realism) still has to explain why its natural properties carry authority. (4) Strong emergence of moral facts: if moral properties are new and not derivable, as in Wielenberg's robust realism, naturalism has been given up and a brute making relation has taken the place of an explanation. (5) Obligation needs a person: emergent properties, of either kind, describe; obligations demand, and demands come from someone. Each step is set out below with objections and rebuttals.

What the page does not claim. It does not claim that emergence is a confused idea, that evolution shaped nothing, that atheists cannot be good or cannot know moral truths, or that the moral argument proves Christianity on its own. It claims that "morality is emergent" does not answer the question the moral argument asks.

Argument structure

Form

Defensive (a defeater). P1 is a disambiguation that separates the true claim from the contested one. P2 is a concession with a genetic-fallacy check. P3 and P4 are the two horns of a dilemma built on the weak and strong senses of emergence, the same structure used against the emergence objection about mind. P5 is a positive explanatory claim about the nature of obligation, drawn from the divine-command theory of obligation. Soundness is contemporary and contested: Cornell realists and robust realists are serious philosophers whose views survive as logically possible. The claim is that each pays a price the theist does not.

Master objections to the whole argument

MO1: "You are just assuming God is needed. Moral facts can be brute, like the laws of logic."

• Then the objector has left emergence behind. A brute moral fact did not emerge from anything; it is simply there. That is Wielenberg's position, answered at Atheist Moral Realism Defeater. Brute facts are allowed in any worldview, but a worldview that must add a brute for logic, another for morality and another for the fit between moral facts and evolved minds is paying more than one that grounds all three in one necessary, rational and good God.

MO2: "Theists have the same problem. Why is God's nature good? Isn't that brute too?"

• Every account ends somewhere. The question is where. Theism ends at a personal being whose nature is the standard of goodness and whose will can issue commands, so goodness and obligation have the same source. That is the standard reply to the Euthyphro Dilemma, and it is the very thing an impersonal emergent property cannot supply: a someone who demands.

MO3: "Emergent things are real. Love emerges from brains, and you don't deny love is real."

• Agreed, and the page does not deny that morality is real. Love, pain and time are real without being lumps of matter. But "real" is not the question. A real feeling of obligation is still a feeling. The question is whether the obligation it reports is true and binding, and that is a question about authority, not existence.

P1, "Morality emerged" is ambiguous

Affirmative case

1. Two different things go by the name "morality." One is a psychological and social phenomenon: what people feel, believe and enforce. The other is a normative fact: what is actually right and what people actually owe. Moral philosophers mark this as the difference between descriptive and normative ethics.
2. The two can come apart. A society can believe slavery is right while slavery is wrong. If "morality" just meant the beliefs, slavery would have been right wherever it was believed right. Almost no one accepts that.
3. Emergence claims are usually about the first. The evidence offered for emergent morality (primate cooperation, kin altruism, cultural transmission, neuroscience of empathy) is evidence about moral psychology. It describes how humans came to have moral beliefs.

Anticipated objections

1. "There is no difference. Morality just is what humans value."
2. "The distinction is a theist's invention."

Rebuttals

1. Then you have given up objective morality, not grounded it. If morality just is what humans value, the abolitionists were not right and the slaveholders wrong; they valued different things. That is the anti-realist position, which the objector usually does not hold. It is answered at Moral Anti-Realism Defeater.
2. Naturalist philosophers draw it too. Sharon Street's whole argument depends on the difference between our "evaluative judgements" and the "independent evaluative truths" a realist believes in (Philosophical Studies 127, 2006). So does every debate about moral realism.

P2, The emergence of moral awareness is granted, and it does not touch the moral argument

Affirmative case

1. Theism expects moral awareness to develop. Paul says the Gentiles who do not have the law "do by nature the things of the law" and "show the work of the law written in their hearts, their conscience bearing witness therewith" (Romans 2:14-15, ASV). The Bible expects moral knowledge to arise in ordinary human life, by nature.
2. A belief's history does not settle its truth. Our arithmetic and our sense of logic also developed in brains with an evolutionary history. No one concludes that 2 + 2 = 4 is therefore not true. Judging a belief by its origin is the Genetic Fallacy.
3. The moral argument is about the truth, not the awareness. Its premise is that objective moral values and duties exist, and its question is what grounds them. Explaining how humans came to recognize them answers a different question.

Anticipated objections

1. "But if evolution explains our moral beliefs, we don't need moral facts to explain anything."

Rebuttals

1. That cuts against the objector, not the theist. If evolution explains moral beliefs without any moral facts, then our moral beliefs were not formed by tracking moral truth. That is Richard Joyce's evolutionary debunking argument (The Evolution of Morality, 2006), and Street's dilemma presses the same point. It does not establish naturalist realism; it threatens it. The objector who wants real moral facts now needs an account of why evolved beliefs would match them. The theist has one: the God who grounds moral truth also made the minds that grasp it. See Evolution and Empathy Ground Morality (Defeater), P4, and Evolutionary Argument Against Naturalism.

P3, If moral facts weakly emerge, no set of descriptive facts adds up to an obligation

Affirmative case

1. Weak emergence is derivability. On Chalmers's account, a weakly emergent truth is unexpected given the lower level but still follows from it (Chalmers, "Strong and Weak Emergence," 2006). Wetness follows from the chemistry of water. If moral facts are weakly emergent, they follow from facts about brains, bodies and groups.
2. But no set of descriptive facts entails an "ought." Hume observed that moral writers move from propositions joined by "is, and is not" to propositions joined by "an ought, or an ought not" and never explain the step (Treatise III.1.1; see Is-Ought Fallacy). You can describe a society's cooperation in complete detail and the conclusion "therefore you ought to cooperate" still needs a normative premise.
3. Moore's open question presses the same point. For any natural property N proposed as goodness, it remains a meaningful question whether N is good (G.E. Moore, Principia Ethica, 1903; see Is-Ought Fallacy). "This promotes group survival, but is it right?" is not a confused question.
4. The best version, and its gap. Cornell realists such as Richard Boyd ("How to Be a Moral Realist," 1988) and David Brink (Moral Realism and the Foundations of Ethics, 1989) answer Moore by saying moral properties are natural properties, identified a posteriori, the way water was discovered to be H2O. The theist can grant the identity claim for argument's sake. What it does not explain is authority. Learning that water is H2O tells me what water is; it does not tell me I am bound to drink it. If goodness just is, say, a cluster of properties that promote human flourishing, the question "why must I promote it when it costs me?" is left standing.

Anticipated objections

1. "Hume's gap is closed by a premise everyone accepts: flourishing is good."
2. "Water is H2O is also not derivable from the meaning of 'water', yet it is true. Moral identities can be like that."

Rebuttals

1. Then the normative premise is doing the work, not emergence. Adding "flourishing is good and ought to be promoted" makes the argument valid, but that premise is a moral fact, and its grounding is exactly what is in question. Emergence has not explained it; it has assumed it.
2. The analogy explains what a property is, not why it binds. The H2O analogy shows that a natural kind can be discovered empirically. Obligations are not just kinds; they give reasons that override desire. Nothing about the chemistry of water gives anyone a reason. The analogy, pressed, shows the gap rather than closing it.

P4, If moral facts strongly emerge, naturalism is conceded

Affirmative case

1. Strong emergence is novelty. On Chalmers's account, a strongly emergent truth does not follow, even in principle, from the lower-level facts. If moral facts are like that, they are genuinely new features of reality not accounted for by physics, chemistry, biology or sociology.
2. That is not naturalism in any ordinary sense. A naturalist who accepts strongly emergent, non-natural moral properties has granted that nature alone does not account for them, which is the theist's point.
3. The strongest atheist version accepts a brute. Erik Wielenberg's Robust Ethics (2014) defends godless moral realism in which moral properties are non-natural and are made by natural properties. Terence Cuneo's review reports that Wielenberg treats this making relation as "brute" and as "a robust causal relation analogous to the relation that God is said to bear" to the world, and notes he does not address the worry that this explains "the obscure in terms of the more obscure" (Notre Dame Philosophical Reviews, 2015).
4. The theist's comparison. William Lane Craig debated Wielenberg on exactly this point; the exchange, with responses from Moreland, Baggett, Linville, Morriston and Huemer, is published as A Debate on God and Morality (Routledge, 2020). Craig's line is that the view's metaphysics is extravagant and its epistemology faces the evolutionary objection. The underlying comparison: robust realism needs brute moral facts plus a brute relation linking them to the natural world plus an explanation of why evolved minds know them; theism grounds all three in one person.

Anticipated objections

1. "Strong emergence is perfectly natural. Consciousness is strongly emergent and nobody calls it supernatural."
2. "Some brute facts are unavoidable. The theist has God as a brute fact."

Rebuttals

1. Strong emergence of consciousness is itself a problem for naturalism. That is the argument of Consciousness Emerges from Neurons Objection Defeater and of Thomas Nagel's Mind and Cosmos. Adding a second strongly emergent domain, now a normative one, makes the naturalist's world look less like matter in motion, not more.
2. Granted, and the question is which brute explains more. God is a necessary, personal being whose nature is goodness and whose commands produce obligation. One stopping point accounts for moral goodness, moral obligation and the fit between moral truth and the minds made to know it. Wielenberg's brute making relation accounts for only the first.

P5, Obligation needs a person

Affirmative case

1. Properties describe, obligations demand. An emergent property, weak or strong, is a feature something has. An obligation is a demand on someone, with authority over their desires. The gap between "this has the property of wrongness" and "you are bound not to do it" is the gap the emergence account does not cross.
2. Obligations are owed. In ordinary life, obligations are owed to someone: a promise to a friend, a debt to a lender. Robert Adams argues that obligation is social in nature, constituted by the demands of another within a relationship, and that the fitting source of moral demands is a loving God (Finite and Infinite Goods, 1999, Part Three; see Divine Command Theory).
3. Wrongs done in secret show it. When someone does wrong that no human will ever discover and no one is harmed in any measurable way, we still judge that a wrong was done. Whom was it done against? On an emergence account, no one. On theism, there is always someone: "To him therefore that knoweth to do good, and doeth it not, to him it is sin" (James 4:17, ASV).
4. Conscience reports a demand, not a description. C.S. Lewis's argument in Mere Christianity (1952, Book I) turns on this: the moral law presses on us as something we did not invent and cannot escape, which is what we should expect if it comes from a lawgiver. See Argument from Conscience.

Anticipated objections

1. "Adams's social account is controversial. Obligation might not be social at all."
2. "Obligations come from society. Society is the person who demands."

Rebuttals

1. Granted, it is contested, and the alternative is still owed. Critics argue Adams's first step, that obligation is social, is not proven. But the naturalist then needs a non-social account of what makes a demand authoritative, and the emergence account does not give one. The burden does not disappear by rejecting Adams.
2. Then society can make wrong right. If society is the demanding party, a society that demanded slavery made it obligatory to obey. The reformers who defied their societies would have been the ones doing wrong. That conclusion is the strongest evidence against the premise. See Intersubjective Morality Defeater.

Cross-examination

Five questions, asked in order:

1. "When you say morality emerged, do you mean our moral beliefs emerged, or that moral truths themselves emerged?"
2. (If beliefs) "Then we agree. How does the history of a belief tell us whether it is true?"
3. (If truths) "Can those moral truths be derived from facts about brains and societies, or are they something new that nature alone doesn't account for?"
4. (If derivable) "Then show me the step from a description of what humans do to what they ought to do, without slipping in an 'ought.'"
5. (If new) "Then you agree reality contains more than nature. Why should matter, arranged in a certain way, produce obligations, and to whom are those obligations owed?"

Dodge table

Live-cite kit

Scripture:

• Romans 2:14-15, the Gentiles "show the work of the law written in their hearts, their conscience bearing witness therewith" (ASV)
• James 4:17, "To him therefore that knoweth to do good, and doeth it not, to him it is sin." (ASV)
• Psalm 19:7, "The law of Jehovah is perfect, restoring the soul" (ASV)

Scholarly (the objection, stated fairly):

• Richard Boyd, "How to Be a Moral Realist," in Geoffrey Sayre-McCord, ed., Essays on Moral Realism (Cornell, 1988), and David Brink, Moral Realism and the Foundations of Ethics (Cambridge, 1989): moral properties as natural properties.
• Erik Wielenberg, Robust Ethics: The Metaphysics and Epistemology of Godless Normative Realism (Oxford, 2014).

Scholarly (the reply):

• David Chalmers, "Strong and Weak Emergence," in Philip Clayton and Paul Davies, eds., The Re-Emergence of Emergence (Oxford, 2006).
• David Hume, A Treatise of Human Nature (1739), III.1.1.
• Sharon Street, "A Darwinian Dilemma for Realist Theories of Value," Philosophical Studies 127 (2006), pp. 109-166.
• Richard Joyce, The Evolution of Morality (MIT Press, 2006).
• Robert Merrihew Adams, Finite and Infinite Goods: A Framework for Ethics (Oxford, 1999), Part Three.
• Mark Linville, "The Moral Argument," in William Lane Craig and J.P. Moreland, eds., The Blackwell Companion to Natural Theology (Wiley-Blackwell, 2009).
• William Lane Craig and Erik Wielenberg, A Debate on God and Morality, ed. Adam Lloyd Johnson (Routledge, 2020).

Aphorism: "Emergence explains why we feel the 'ought.' It does not explain why the 'ought' is true."

Aphorism: "A property can be real. Only a person can be owed."

Connection to Scripture

• Romans 2:14-15, moral knowledge arises "by nature," which is why the theist can grant the development of moral awareness.
• Genesis 1:27, humans made in God's image, the ground of their moral worth and their capacity to know the good.
• James 4:17, sin as failing a known good, an obligation owed to God.
• Psalm 19:7, the law has a personal source, "the law of Jehovah."

Scholarship

Published academic works this page draws on, each matched to a publisher, index or library catalog record.

• Robert Merrihew Adams, Finite and infinite goods (1999). Open Library
• David Owen Brink, Moral Realism and the Foundations of Ethics (Cambridge University Press, 1989). doi:10.1017/cbo9780511624612
• William Lane Craig and J. P Moreland, Blackwell Companion to Natural Theology (2009). Open Library
• William Lane Craig and Erik J. Wielenberg, A Debate on God and Morality: What is the Best Account of Objective Moral Values and Duties? (Routledge, 2020). doi:10.4324/9781003055259
• David Hume, A treatise of human nature (A treatise of human nature, 1739). Open Library
• Richard Joyce, The Evolution of Morality (The MIT Press, 2005). doi:10.7551/mitpress/2880.001.0001
• C.S. Lewis, Mere Christianity (1952). Open Library
• George Edward Moore, Principia ethica (1903). Open Library
• Thomas Nagel, Mind and Cosmos: Why the Materialist Neo-Darwinian Conception of Nature is Almost Certainly False (Oxford University Press, 2012). doi:10.1093/acprof:oso/9780199919758.001.0001
• Geoffrey Sayre-McCord, Essays on moral realism (Cornell University Press, 1988). Open Library
• Sharon Street, "A Darwinian Dilemma for Realist Theories of Value," Philosophical Studies 127 (2006). doi:10.1007/s11098-005-1726-6
• Erik J. Wielenberg, Robust Ethics: The Metaphysics and Epistemology of Godless Normative Realism (Oxford University Press, 2014). doi:10.1093/acprof:oso/9780198714323.001.0001

See also

• Moral Argument, the argument this objection targets
• Evolution and Empathy Ground Morality (Defeater), the companion defeater for the secular grounding menu and Ruse's concession
• Atheist Moral Realism Defeater, brute, non-theistic moral facts and the Wielenberg view
• Moral Anti-Realism Defeater, the atheist who denies moral facts altogether
• Intersubjective Morality Defeater, morality as social agreement
• Consciousness Emerges from Neurons Objection Defeater and Intelligence Is Emergent Objection Defeater, the same weak-versus-strong emergence dilemma applied to mind
• Is-Ought Fallacy, the logical gap behind P3, also called the is-ought problem and, loosely, the naturalistic fallacy
• Divine Command Theory and Euthyphro Dilemma, the theistic account of obligation and its standard objection
• Argument from Conscience and Grounding Argument from Cognitivism, related moral arguments
• Evolutionary Argument Against Naturalism, the epistemic side of the evolutionary point
• Genetic Fallacy, judging a belief by how it arose