{"id":"VOI-004","name":"Vary sentence length for function","domain":"rhythm","layer":"paragraph","strength":"heuristic","human_logic":"IF sentence lengths are mechanically uniform, THEN vary them according to emphasis, explanation, transition, and pace ELSE retain.","when":{"path":"paragraph.sentence_length_variance","operator":"eq","value":"near_zero"},"then":[{"action":"vary","target":"paragraph.sentence_lengths","by_function":{"short":"emphasis_or_transition","medium":"core_explanation","long":"qualified_relationship"}}],"else":[{"action":"retain","target":"current_text","reason":"No triggering condition is present."}],"unless":[],"because":"Controlled variation creates rhythm and maps length to cognitive function.","diagnostics":[],"examples":{},"source_ids":["BK-011","BK-013","BK-019"],"laka":{"smallest_sufficient_intervention":true,"primary_axes":["scope","depth","magnitude","reversibility"]},"requires_facts":["paragraph.sentence_length_variance"],"tests":[],"sources":[{"id":"BK-011","title":"On Writing: A Memoir of the Craft","creator":"Stephen King","domain":"creative_writing","type":"Book","note":"Writing habits, revision, description, and storytelling craft.","url":null},{"id":"BK-013","title":"On Writing Well","creator":"William Zinsser","domain":"nonfiction_style","type":"Book","note":"Clarity, simplicity, voice, and nonfiction craft.","url":null},{"id":"BK-019","title":"Steering the Craft","creator":"Ursula K. Le Guin","domain":"prose_craft","type":"Book","note":"Sound, rhythm, syntax, point of view, and exercises.","url":null}],"defined_in":{"file":"12-voice-rhythm-rules.json","title":"Voice, Tone, and Rhythm Rules","slug":"voice-rhythm-rules"}}