Type: Node / Formalized Expectation
Working Definition: A rule is a formalized specification that governs action, interpretation, or status within a defined domain — stating a condition, permission, prohibition, requirement, or constitutive relation that applies to a class of cases and carries a recognized basis for enforcement, challenge, or appeal.
Function in the Grammar: A rule is a norm that has been enacted. Where a norm is a shared expectation — operative through social recognition and informal enforcement — a rule is formally specified: enacted through a recognized procedure, applied to a defined class of cases, and enforced through institutional mechanisms. Rules translate the normative expectations of a community into legible, contestable, applicable standards. They are the grammar made operational: not merely what a community expects, but what it formally requires, what constitutes compliance, and what constitutes departure.
Rules may be regulative or constitutive. Regulative rules govern behavior that could exist without the rule — they impose conditions, prohibitions, or requirements on pre-existing action. Constitutive rules create the very possibility of the action or status they govern — without the rule, the action or status cannot occur. This distinction is treated in depth in the Constitutive Rule entry; Rule is the broader concept that encompasses both.
Formal Pattern
Rule(R) iff
R specifies: Condition(c), Action-type(T), Effect(e)
R has Scope(D): the domain of cases to which R applies
R was enacted through a recognized procedure in Institution(I) or Constitution(K)
R is formally specified: its content can be stated, consulted, and applied
R is applicable: given Condition(c), Effect(e) follows for cases in D
R carries: AuthoritySource(R), EffectiveDate(R), AmendsOrSupersedes history
RegulativeRule(R): R governs T where T can occur independently of R
ConstitutiveRule(R): R creates the possibility of T; T cannot occur without R (or rules like it)
Examples
| Domain | Rule | Regulative or Constitutive |
|---|---|---|
| Law | "Contracts require consideration to be enforceable" | Partly constitutive: defines what a binding contract is |
| Corporate governance | "CFO approval required for purchases over $10,000" | Regulative: purchasing existed before the threshold |
| Science / publishing | "Papers must be peer-reviewed before publication" | Regulative: papers existed before the requirement; partly constitutive for "published paper" status |
| Religious institutions | "Three witnesses are required for a valid marriage ceremony" | Constitutive: the legal validity of the ceremony is created by the rule |
| Digital governance | "All AI acts require a receipt within the same session" | Regulative: AI acts could occur without the receipt requirement; constitutive for "governed AI act" status |
| Games | "In chess, a player wins by checkmating the opponent" | Constitutive: winning-by-checkmate exists only within chess |
| Ordinary life | "In this household, dinner dishes must be washed before 9pm" | Regulative: dishes existed before the rule |
Distinctions
Rule ≠ Norm. A norm is an operative expectation — shared, enforced through social recognition, potentially informal. A rule is a formalized norm — enacted through procedure, formally specified, enforced through institutional mechanisms. The same content may be both a norm (operative through social pressure) and a rule (enacted and formally enforceable). Norms can be broken without anyone invoking a formal violation; rules create a defined path for finding and responding to non-compliance.
Rule ≠ Law. Law is a specific class of rule enacted by the state and backed by state enforcement. Rules are broader: they govern institutions that are not states, in domains that law does not reach. Bylaws, editorial policies, bridge rules, household agreements, and community norms-formalized-as-rules are all rules that are not law.
Rule ≠ Policy. A policy is a governing principle or operational guideline, often at a higher level of abstraction than a rule. Policies guide judgment; rules specify what applies in defined cases. A data privacy policy is a governing principle; the specific rules that implement it specify what must be disclosed, when, to whom. In practice, the terms overlap; in the grammar, the distinction matters when asking whether a case is determined by the rule or requires judgment informed by the policy.
Rule ≠ Commitment. A commitment is a specific bilateral obligation created by a recognized act — one actor bound to another for a specific performance. A rule applies to a class of actors in a class of situations. An actor may have commitments and also be subject to rules; the two are additive, not synonymous.
Rule ≠ Constitutive Rule. A constitutive rule is a specific type of rule: one that creates the possibility of the action or status it governs. All constitutive rules are rules; not all rules are constitutive. Regulative rules govern pre-existing behavior without creating it. The Rule entry is the broader concept; Constitutive Rule is the special case. The distinction is treated in depth in the Constitutive Rule entry.
Rule ≠ Value. A value is an abstract orientation — what an agent or community holds to be important or good. A rule is specific and applicable: given this condition, this effect follows. Values inform rules but are not themselves rules; a rule without a value behind it may be arbitrary, but a value without a rule behind it is not itself enforceable.
Common Failure Modes
| Mode | Description |
|---|---|
| Rule without uptake | A rule is formally enacted but is not actually applied — actors do not consult it, institutions do not enforce it, and departures go unaddressed. The rule has formal existence but no operational reality. Where to look: rules that are cited in constitutional documents but never appear in actual institutional decisions. |
| Rule-as-fact confusion | A rule that was enacted at a specific time, in a specific institution, is treated as a natural fact — as if it were true independently of having been enacted. This makes the rule unquestionable when it should be subject to amendment, challenge, or repeal. Where to look: rules whose origins and enactment procedures are never discussed. |
| Rule without scope clarity | A rule applies to a class of cases but the class is not well-defined. Actors cannot determine whether their case falls within the rule's scope; enforcement is inconsistent. Where to look: rules that produce disagreement about whether they apply to a specific case. |
| Rule proliferation | An institution produces rules at a rate that exceeds its capacity to maintain, apply, and enforce them. The rule system becomes opaque; actors cannot determine which rules apply; compliance becomes selective. Where to look: institutions with large numbers of rules that are not organized, indexed, or regularly reviewed. |
Cross-References
- Constitutive Rule — the special case: rules that create the possibility of the action or status they govern
- Norm — rules are formalized norms; norms are the upstream source from which rules derive
- Institution — institutions enact and maintain rules; rules are the operational form of institutional grammar
- Constitution — a constitution is a specific class of rule: the foundational rules that govern the institution itself
- Authority — rules must be enacted by actors with authority to do so; rules carry their enacting authority
- Commitment — rules govern classes of actors; commitments bind specific actors to specific beneficiaries
- Exception — exceptions depart from rules; the exception presupposes the rule it departs from
- Amendment — rules may be amended; amendments follow the rule's governing procedure
- Breach — breach is failure to comply with a binding rule or commitment
- Count-As — Count-As is the operator that expresses constitutive rules; rules specify when Count-As relations hold
- Judgment — rules guide judgment; judgment applies rules to specific cases and determines what follows