GRM-016 Context default layer: sentence

Parallel grammatical form

IF coordinated items perform the same function AND use mismatched forms without rhetorical purpose, THEN make their structures parallel ELSE retain.

Why the rule exists

Parallel form exposes the equality and relationship of coordinated ideas.

Condition

The rule fires when this evaluates true. Paths marked below must be present in the fact base; the engine reports the rest rather than guessing them.

ALL
- coordination.item_count gte 2
- coordination.same_function eq true
- coordination.forms_parallel eq false
- coordination.rhetorical_asymmetry eq false

Facts this rule reads

Fact paths read by GRM-016 and whether the analyser derives them
Path	Source
`coordination.item_count`	You supply it
`coordination.same_function`	You supply it
`coordination.forms_parallel`	You supply it
`coordination.rhetorical_asymmetry`	You supply it

Then

align — target coordination.item_forms, value from clearest_existing_pattern

Else

retain — target current_text, No triggering condition is present.

LAKA

Smallest sufficient intervention

Yes

Primary axes

Sources

The Elements of Style — William Strunk Jr.; E. B. White
Conciseness, conventional usage, and composition principles.
The Copyeditor's Handbook — Amy Einsohn; Marilyn Schwartz
Professional copyediting practice, grammar, and editorial process.
On Writing Well — William Zinsser
Clarity, simplicity, voice, and nonfiction craft.
Microsoft Writing Style Guide — Microsoft link
Warm, clear, concise, helpful technical communication.

The raw rule record

Verbatim from 07-core-grammar-rules.json. Also available at /v1/rules/GRM-016.

{
  "id": "GRM-016",
  "name": "Parallel grammatical form",
  "domain": "grammar",
  "layer": "sentence",
  "strength": "context_default",
  "human_logic": "IF coordinated items perform the same function AND use mismatched forms without rhetorical purpose, THEN make their structures parallel ELSE retain.",
  "when": {
    "all": [
      {
        "path": "coordination.item_count",
        "operator": "gte",
        "value": 2
      },
      {
        "path": "coordination.same_function",
        "operator": "eq",
        "value": true
      },
      {
        "path": "coordination.forms_parallel",
        "operator": "eq",
        "value": false
      },
      {
        "path": "coordination.rhetorical_asymmetry",
        "operator": "eq",
        "value": false
      }
    ]
  },
  "then": [
    {
      "action": "align",
      "target": "coordination.item_forms",
      "value_from": "clearest_existing_pattern"
    }
  ],
  "else": [
    {
      "action": "retain",
      "target": "current_text",
      "reason": "No triggering condition is present."
    }
  ],
  "unless": [],
  "because": "Parallel form exposes the equality and relationship of coordinated ideas.",
  "diagnostics": [],
  "examples": {},
  "source_ids": [
    "BK-001",
    "BK-007",
    "BK-013",
    "WEB-004"
  ],
  "laka": {
    "smallest_sufficient_intervention": true,
    "primary_axes": [
      "scope",
      "depth",
      "magnitude",
      "reversibility"
    ]
  }
}