{"actors":["Prototype test engineer who records observations and makes reversible test-cell adjustments","Discipline design engineer who evaluates proposed design changes","Configuration manager who controls the released design baseline","Safety or certification authority who decides whether evidence is sufficient for safety-relevant changes","Manufacturing or maintenance engineer who later relies on the released configuration and rationale"],"affected_objective":"Permit rapid prototype-test iteration while preserving a coherent, auditable design baseline linking each accepted change to its evidence, requirements, configuration, and authority.","arm":"COMMON_P1","authority_safety":{"authorized_first_step":"The configuration manager may run a read-only, shadow-mode replay using deidentified historical change records in an isolated workspace; the replay may not alter test equipment, released drawings, requirements, or PLM records.","decision_authority":"The configuration manager controls baseline promotion, the responsible discipline engineer approves technical content, and the safety or certification authority has final authority over safety-relevant promotion rules and any later live pilot.","excluded_actions":["No automatic release of a design change","No fast-store entry may authorize fabrication, operation, procurement, or maintenance","No bypass of required engineering, safety, cybersecurity, export-control, or certification review","No duplication of restricted technical data into a store lacking equivalent access controls","No physical-system or production-system changes during the first evidence step"],"halt_rollback":"Stop the exercise if a provisional item is displayed as released, provenance is lost during transformation, access controls differ between stores, or a conflict lacks an explicit owner. Preserve the canonical baseline unchanged, suspend transfers, mark all shadow records non-authoritative, and return to the existing change-control workflow pending review."},"baseline":"An assumed comparison workflow uses the PLM or configuration-management system as the sole authoritative store while engineers keep rapid test observations, calculations, and provisional adjustments in notebooks, spreadsheets, or messages, then transcribe selected material through ordinary change requests after the test session.","candidate_id":"fast_slow_store_coupling__engineering_design__COMMON_P1","causal_chain":["During prototype testing, observations and reversible adjustments arrive faster than fully validated PLM change records can be prepared.","A bounded, append-only test-cell delta ledger captures each observation or adjustment immediately with timestamp, asset identifier, author, test configuration, uncertainty, and evidence pointer.","Routing rules require safety-relevant, irreversible, or configuration-controlling actions to bypass provisional authority and enter the formal review path immediately; only reversible test work may rely on the ledger for local continuity.","Risk triggers and an end-of-shift cadence select ledger items for consolidation before context is overwritten or staff rotate.","The consolidation step normalizes identifiers and units, deduplicates entries, links evidence and requirements, preserves uncertainty, and packages candidate changes for the canonical configuration system.","Discipline, configuration, and safety authorities accept, reject, merge, or return each package; accepted content enters the released baseline with provenance while rejected content retains an auditable disposition.","Version checks compare the ledger against the canonical baseline and flag stale references, conflicting edits, and unprocessed backlog.","Expiration and eviction rules remove superseded working views from active use without erasing the canonical audit trail, keeping the fast layer bounded and visibly provisional."],"cell_id":"fast_slow_store_coupling__engineering_design","consequence":"If rapid test traces are lost, transcribed without context, or treated as unofficial truth, later design decisions can use an incorrect configuration, repeat discarded work, or lack the evidence needed for review, manufacture, maintenance, or certification.","diversity_from_prior_proposals":"No comparison with prior proposals was performed under runtime isolation. This candidate is specifically characterized by coupling a test-cell delta ledger to a controlled engineering baseline, with transformed promotion rather than simple copying.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","intervention":"Introduce a two-store engineering-change workflow: a low-latency, append-only test-cell delta ledger for provisional observations and reversible adjustments, coupled to the authoritative PLM/configuration baseline through risk-triggered and end-of-shift transfer, validation and normalization, bounded retention, visible authority markers, version reconciliation, and human-controlled promotion.","mechanism_mapping":[{"counterfactual_removal":"Without separate stores, engineers must either interrupt live testing for full canonical entry or keep fragile local traces outside a governed integration path.","mechanism_slug":"two_store_architecture","role":"Separates immediate working capture from durable, validated configuration control."},{"counterfactual_removal":"Without consolidation, raw observations would be copied into the baseline without normalized units, identifiers, evidence links, deduplication, or preserved uncertainty.","mechanism_slug":"memory_consolidation","role":"Transforms provisional test traces into reviewable engineering-change packages."},{"counterfactual_removal":"Without explicit timing rules, important traces may be overwritten while routine noise may be promoted indiscriminately.","mechanism_slug":"cadence","role":"Combines immediate risk-triggered transfer with routine end-of-shift processing."},{"counterfactual_removal":"Without versions and authority markers, the ledger and released baseline could diverge silently and be mistaken for equivalent truths.","mechanism_slug":"versioning","role":"Labels provenance, freshness, provisional status, and the canonical version used by each entry."},{"counterfactual_removal":"Without reconciliation, conflicting edits, stale configuration references, and failed transfers could persist as split-brain design state.","mechanism_slug":"data_integrity","role":"Checks transfer completeness and routes conflicts to named human authorities."},{"counterfactual_removal":"Without capacity and expiration controls, the fast ledger could accumulate obsolete material and become a shadow database.","mechanism_slug":"resource_management","role":"Bounds active working state through promotion, disposition, expiration, and backlog limits."}],"nearest_rivals":["Direct mobile entry into the canonical PLM system: retains one authority layer but may impose full validation overhead during live testing; it is preferable if canonical entry already meets the required working latency.","An engineering issue tracker linked to PLM: records tasks and discussion, but does not necessarily provide governed transformation, promotion, expiration, or bidirectional version reconciliation.","A write-only test log followed by an end-of-program retrospective: preserves chronology but leaves transfer timing, canonicalization, and conflict repair largely manual.","A synchronized replica of the PLM baseline at the test cell: improves access but primarily duplicates canonical state rather than consolidating provisional observations into durable design knowledge."],"negative_tests":{"intervention_falsifier":"In the bounded replay, the intervention is falsified for further testing if its routing and transformation rules cannot preserve source evidence and uncertainty, distinguish provisional from released state, route every scripted safety-relevant case to formal review, or resolve injected version conflicts without an undocumented authority decision.","problem_falsifier":"The inferred problem is falsified in the selected setting if timestamped historical records show that engineers already capture observations directly into the canonical system within the live-work window, with complete provenance and disposition, and no consequential trace loss, stale use, shadow records, or transfer backlog.","risks":["A provisional ledger entry could be mistaken for an approved design instruction.","Sensitive or export-controlled technical data could be copied into a weaker access-control environment.","Routine transfer could canonize transient test noise or observer bias.","A growing review backlog could delay consolidation until context is lost.","Additional capture fields could burden test engineers and encourage workarounds.","Normalization could erase uncertainty, units, sequence, or configuration context.","Conflicting edits could be resolved according to convenience rather than declared authority."],"strongest_counterevidence":"The strongest counterevidence would be an existing configuration workflow that already supports immediate structured capture at the test cell, preserves raw evidence and uncertainty, enforces the same access controls, and completes governed canonical integration before local context can be lost."},"next_evidence_step":"Conduct one two-hour, shadow-mode tabletop replay in an isolated workspace using ten deidentified historical prototype-change traces plus three scripted conflict cases. Have a test engineer enter them through the proposed ledger while the configuration manager and safety authority apply routing, consolidation, promotion, expiration, and reconciliation rules. Record capture time, missing provenance fields, stale-state presentations, transfer backlog, transformation losses, authority escalations, and final disposition; make no live or canonical changes. The configuration manager and safety authority then decide whether the problem and mechanism warrant a separately authorized pilot.","observable_state":"For each prototype-test observation or adjustment, observers can see its timestamp, author, affected asset and configuration version, reversibility class, safety relevance, uncertainty, supporting evidence, current store, provisional or authoritative marker, transfer status, review owner, conflict status, and final canonical disposition. Aggregate state includes capture latency, backlog age, stale-use events, rejected promotions, unresolved conflicts, and active-ledger size.","prior_art_status":"UNSEARCHED","problem":"Prototype-test teams need to record observations and reversible adjustments at test pace, but the authoritative configuration system requires slower validation and review. Fragile local traces can be overwritten or detached from their test configuration before they are integrated, while provisional adjustments can persist as shadow design truth.","proposal_index":1,"remaining_contrastive_claim":"The candidate is distinguished from direct PLM entry, an issue tracker, a test log, or a synchronized replica by making provisional-to-canonical transfer a governed engineering operation that transforms evidence, preserves uncertainty and provenance, bounds the working store, and reconciles authority and versions; whether that distinction is useful in the selected setting remains to be tested.","revision_record":{"claim_changes":["Initial version; no parent claims were revised.","All outcome statements are framed as causal hypotheses or decision criteria, not established effects."],"conceptual_changes":["Initial version maps the archetype to prototype-test change capture and configuration control."],"evidence_changes":["No external evidence or prior-art search was used.","A bounded shadow replay is specified as the first evidence-producing step."],"operational_changes":["Initial version defines routing, consolidation, promotion, expiration, reconciliation, authority, halt, and rollback rules."],"parent_version":null,"progress_targets_addressed":["Concrete actors and observable state","Causal preservation of fast store, slow store, transfer cadence, consolidation transform, and reconciliation guard","Contrast from neighboring workflows","Explicit authority boundaries and safeguards","Problem and intervention falsifiers","Bounded non-live first evidence step"]},"schema_version":1,"structural_mapping":[{"archetype_element":"Fast volatile store","domain_realization":"An append-only test-cell delta ledger holding recent observations, calculations, reversible adjustments, uncertainty, and evidence pointers for rapid local use."},{"archetype_element":"Slow integrated store","domain_realization":"The authoritative PLM/configuration baseline containing reviewed requirements, drawings, parameters, approved deviations, evidence links, and change history."},{"archetype_element":"Read/write routing rule","domain_realization":"Reversible test observations enter the ledger; released-design queries, fabrication instructions, irreversible actions, and safety-relevant approvals require canonical confirmation or direct formal review."},{"archetype_element":"Transfer trigger or cadence","domain_realization":"Safety relevance, irreversibility, configuration mismatch, or high-value evidence triggers immediate packaging; remaining eligible entries are processed at the end of each test shift."},{"archetype_element":"Consolidation transform","domain_realization":"Transfer validates asset and configuration identifiers, normalizes units and terminology, deduplicates related entries, links requirements and raw evidence, preserves uncertainty, and creates a reviewable change package."},{"archetype_element":"Promotion and eviction rule","domain_realization":"Human-approved packages enter the baseline; rejected, duplicated, or transient entries receive explicit disposition, and superseded items expire from the active working view."},{"archetype_element":"Interference and overwrite guard","domain_realization":"Append-only history, timestamps, evidence hashes or stable pointers, protected high-risk flags, and shift-close snapshots prevent later test activity from silently overwriting relevant traces."},{"archetype_element":"Freshness and authority marker","domain_realization":"Every view labels the referenced baseline version, last reconciliation time, provisional status, and whether canonical confirmation is required."},{"archetype_element":"Consistency reconciliation check","domain_realization":"Automated version comparison identifies stale references and conflicting edits, while named discipline, configuration, and safety authorities determine disposition and record the decision."}],"title":"Test-Cell Delta Ledger Coupled to the Verified Design Baseline","version":0}