{"id":"EXP-005","area":"Measurement and Experimentation","title":"Set guardrails before launch","if":"a change can improve the primary metric while harming quality, accessibility, revenue, or trust","then":"define guardrail thresholds and rollback behavior","else":"use standard site guardrails","operators":["IF","OR","THEN","ELSE","AND"],"laka_levels":["Baseline"],"primary_metric":"guardrail breach rate","guardrails":"unobserved harm","rationale":"Makes the decision explicit, measurable, and reversible where possible.","prefix":"EXP","area_slug":"measurement-and-experimentation","source":{"document":"04","file":"04-IF-ELSE-AND-OR-RULEBOOK.md","heading":"EXP-005 — Set guardrails before launch","anchor":"exp-005-set-guardrails-before-launch"},"sentence":"IF a change can improve the primary metric while harming quality, accessibility, revenue, or trust THEN define guardrail thresholds and rollback behavior ELSE use standard site guardrails","area_detail":{"name":"Measurement and Experimentation","slug":"measurement-and-experimentation","prefix":"EXP","count":12},"governs_gates":["measurement"],"precedence":["safety_law_privacy_policy","user_value_and_accuracy","technical_eligibility_and_canonical_correctness","business_value_and_constraints","intent_fit_and_information_quality","measurement_and_learning","efficiency_and_scale","cosmetic_optimization"],"neighbours":["EXP-001","EXP-002","EXP-003","EXP-004","EXP-006","EXP-007","EXP-008","EXP-009","EXP-010","EXP-011","EXP-012"],"levels":[{"id":"baseline","name":"Baseline","definition":"The system is observed without changing its structure.","examples":["OBJECT: existing query, page, cluster, or site","ACTION: measure, inventory, classify","OUTCOME: trustworthy baseline"],"rule_count":49,"source":{"document":"01","file":"01-SEO-LAKA-GRAMMAR.md","heading":"10.1 Baseline"}}]}