{"abstention_reason":null,"arm":"SUBSTRATE_DIVERSE_P2","candidate_id":"event_log_centered_modeling__engineering_design__SUBSTRATE_DIVERSE_P2","cell_id":"event_log_centered_modeling__engineering_design","decision":"PROPOSAL","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","proposal":{"actors":["Structural-integrity engineers responsible for reusable payload fixtures and transport frames","Mechanical designers who specify load paths, attachment points, and allowable shock spectra","Metrology engineers who calibrate inertial triggers and inspect recorder cartridges","Handling and transport operators who install, seal, and present fixtures for inspection","Nondestructive-inspection technicians who examine locations indicated by recorded shocks","Maintenance engineers who determine inspection, repair, and retirement recommendations","The designated engineering authority that approves any safety-significant use of the recorded history"],"affected_objective":"Detect and preserve the ordered history of otherwise unobserved handling shocks so inspection and reuse decisions for reusable payload fixtures can account for transient loading rather than current appearance alone.","arm":"SUBSTRATE_DIVERSE_P2","authority_safety":{"authorized_first_step":"A metrology engineer may bench-test one non-flight mechanical recorder cartridge on a calibrated drop table and mount a second cartridge on a retired fixture for handling trials; neither record may support an operational reuse decision.","decision_authority":"The designated structural engineering authority, with metrology and safety concurrence, decides whether the recorder is sufficiently calibrated, mechanically compatible, and informative for any controlled field trial or maintenance use.","excluded_actions":["Do not change certified fixture loads, inspection intervals, repair limits, or retirement criteria from pilot results.","Do not install a recorder on an operational fixture until attachment loads, loose-part hazards, environmental compatibility, and calibration stability are approved.","Do not interpret a recorded threshold crossing as proof of damage, cause, operator fault, or payload mishandling.","Do not substitute the recorder for required nondestructive inspection, proof testing, or existing transport controls.","Do not conceal an unreadable, saturated, detached, tampered, or out-of-calibration cartridge by reconstructing events from assumptions.","Do not use fixture event records for personnel surveillance or disciplinary attribution."],"halt_rollback":"Stop the trial if the cartridge alters fixture dynamics, releases parts, triggers unpredictably, misses reference shocks, saturates without indication, or produces ambiguous marks that could affect a safety judgment. Remove the cartridge, quarantine its projections and interpretations, retain the sealed test specimen and discrepancy report, and leave existing inspection and reuse rules unchanged."},"baseline":"Reusable fixtures are visually inspected and periodically examined by nondestructive methods for current deformation, cracking, or joint damage. Handling reports may document known drops, while transient shocks that leave little visible evidence are not preserved as an ordered, fixture-specific history.","candidate_id":"event_log_centered_modeling__engineering_design__SUBSTRATE_DIVERSE_P2","causal_chain":["A reusable payload fixture experiences discrete drops, collisions, and abrupt handling loads during successive transport episodes.","Some shocks can initiate local joint slip, fastener damage, or composite microdamage without leaving an immediately visible permanent deformation, while later inspection observes only the resulting current condition.","Because occurrence, severity band, direction, and order are not durably captured at the load path, maintainers cannot distinguish an unshocked fixture from one with a sequence of potentially relevant transient events unless an operator reported them.","The intervention couples shock energy into calibrated spring-mass triggers; one accepted excursion mechanically selects a direction and severity band and advances an escapement exactly one indexed position.","The same motion irreversibly embosses or punches the selected code into a serialized metal strip, making each occupied cell a stable, ordered physical event assertion that persists without electrical power, software, or network access.","Inspection-boundary seals and cartridge readings supply coarse event-time intervals and record times, while calibration, mounting location, fixture identity, and payload association provide provenance and context without rewriting the strip.","Maintenance staff derive a fixture shock trajectory and an inspection-priority view from accepted cells, explicitly separating the physical occurrence assertion from later damage inference or adjudication.","A newly read event can direct nondestructive examination toward the affected load path and can expose accumulating shock history that current-state inspection alone would not reveal.","Bench replay against known shocks and reconciliation of repeated independent readings reveal missed, duplicated, ambiguous, saturated, or tampered records before any safety-significant adoption."],"cell_id":"event_log_centered_modeling__engineering_design","consequence":"A fixture carrying latent impact damage can be returned to service because its current appearance and scheduled inspection do not reveal the transient event history that created the risk; conversely, an undocumented suspected mishandling can prompt broad inspection or retirement without evidence of whether a relevant shock occurred.","diversity_from_prior_proposals":"P1 reconstructs documentary qualification and approval history for a composite pressure-vessel design through an information-system ledger. This proposal addresses in-service transient shock observability in reusable payload fixtures and creates its canonical evidence through passive mechanical instrumentation: shock energy advances and permanently marks a physical event strip. Its problem, intervention, actors, affected lifecycle phase, and causal path are independent of P1.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","intervention":"Develop a passive mechanical shock-event recorder cartridge for one class of reusable payload fixture. At each selected load path, calibrated spring-mass triggers respond to acceleration excursions. A peak-selecting cam admits only the highest reached severity band for one excursion, a directional selector encodes the load sector, and a damped refractory mechanism prevents oscillation from being counted as multiple events. Energy from the excursion advances a sealed escapement by one position and irreversibly embosses or punches the direction-and-severity code into the next cell of a serialized metal strip. Cell position supplies event order and stable identity; tamper seals, capacity indicators, cartridge serial number, mounting location, calibration state, and inspection-boundary marks supply provenance, context, completeness limits, and coarse occurrence intervals. The strip is the append-only canonical event substrate. Readings and any manual or digital views remain replaceable projections. Calibration failures, ambiguous marks, seal breaks, and revised interpretations append status or adjudication records referencing the original cell rather than altering it. Maintainers may project a fixture shock trajectory and load-path inspection queue, but recorded sequence alone is never treated as proof of damage or cause.","mechanism_mapping":[{"counterfactual_removal":"Without the shock-powered trigger and irreversible indexed marks, unreported transient loads disappear after the excursion and the intervention loses its essential effect even if all registries and projection tools remain.","mechanism_slug":"append_only_event_store","role":"The sealed, serialized metal strip physically preserves an ordered succession of non-overwritable shock assertions."},{"counterfactual_removal":"Without calibrated event boundaries, peak-band selection, and refractory damping, one impact could create no mark, several marks, or incompatible severity claims, making the cells unreliable events.","mechanism_slug":"event_capture_template","role":"Mechanical thresholds and selectors constrain every accepted cell to a bounded excursion with direction, severity band, instrument identity, and load-path context."},{"counterfactual_removal":"Without the single-step escapement and indexed cells, ringing or repeated reading could multiply one excursion and stable event identity would be lost.","mechanism_slug":"event_replay_deduplication","role":"A physical one-event/one-cell acceptance mechanism prevents mechanical chatter and later rereading from creating duplicate effects."},{"counterfactual_removal":"Without separate occurrence intervals, reading times, calibration records, and interpretation status, a newly discovered mark could be mistaken for a precisely timed event or an already-proven damage finding.","mechanism_slug":"bitemporal_event_register","role":"Inspection-boundary seals and readout records distinguish the interval in which the physical shock occurred from when its mark was observed, entered, or adjudicated."},{"counterfactual_removal":"Without a declared projection, the permanent strip would preserve events but would not yield a consistent fixture trajectory or targeted inspection view.","mechanism_slug":"entity_trajectory_projection","role":"Reconstructs the fixture's ordered shock participation across cartridges and handling intervals while retaining ambiguous associations."},{"counterfactual_removal":"Without visible capacity, unread cells, seal condition, calibration coverage, and inspection intervals, users could mistake a partial recorder history for a complete service history.","mechanism_slug":"projection_frontier_dashboard","role":"Exposes the latest read position, unread suffix, remaining capacity, coverage gaps, and degraded recorder status for each fixture."},{"counterfactual_removal":"Without replay against known excitation and independent rereading, missed events, double advances, coding ambiguity, or transcription drift could remain hidden.","mechanism_slug":"projection_rebuild_and_diff","role":"Compares the physical strip, independent readings, and reconstructed trajectory with calibrated test events and declared invariants."}],"nearest_rivals":["Visual and nondestructive inspection: measures present condition and may find resulting damage, but does not preserve the ordered occurrence history of transient shocks.","Single-use shock indicator label: reveals that a threshold may have been exceeded but generally lacks a multi-event ordered record, directional coding, correction lineage, and visible remaining capacity.","Electronic accelerometer logger: can capture richer waveforms and timestamps but depends on power, electronic storage, firmware, and data retrieval; it is a rival rather than the proposed passive mechanical substrate.","Operator incident report: supplies contextual testimony but can omit unobserved events and represents a report rather than an instrument-generated occurrence assertion.","Cumulative fatigue or peak-load witness coupon: physically records exposure or a maximum but does not necessarily distinguish and order multiple bounded shock events."],"negative_tests":{"intervention_falsifier":"The intervention is falsified if blinded drop-table trials show that the cartridge cannot maintain one-cell-per-excursion identity, correct severity and direction classification, preserved order, readable marks, and an explicit saturation state across the approved environmental range, or if its event-derived targeting performs no better than baseline inspection on seeded defects.","problem_falsifier":"The problem is falsified for the selected fixture if approved current-state inspection reliably detects every safety-relevant consequence before reuse regardless of shock history, or if an existing validated recorder already supplies complete fixture-specific event evidence with acceptable reliability and burden.","risks":["Trigger thresholds may drift with temperature, contamination, aging, mounting torque, or wear.","Mechanical ringing or closely spaced impacts may create duplicate, merged, or missed events.","Recorder attachment may alter local dynamics or introduce a loose-part, snag, corrosion, or stress-concentration hazard.","Severity bands based on acceleration may correlate poorly with local strain or actual damage.","Finite strip capacity may produce an incomplete history if saturation is overlooked.","Tampering, cartridge exchange, or incorrect fixture association may corrupt provenance.","Coarse inspection-bounded timing may be insufficient to associate a mark with one handling episode or payload.","Users may treat an occurrence mark as proof of damage, causation, or operator responsibility.","Manufacturing tolerances and mark-reading disagreement may create plausible but incorrect trajectories.","Attention to recorded shocks may bias inspectors away from uninstrumented load paths or unrecorded damage modes."],"strongest_counterevidence":"Validated nondestructive inspection may already detect all damage relevant to reuse, while shock acceleration and sequence may be weak predictors of local structural harm; a passive recorder could therefore add false alarms and maintenance burden without improving safety decisions."},"next_evidence_step":"Build non-flight cartridges for a read-only bench study. Apply a randomized blinded sequence of at most 30 calibrated shocks spanning direction, threshold boundaries, paired-event spacing, temperature, and vibration backgrounds. Compare physical cells with a reference accelerometer record for detection, one-cell identity, order, severity band, direction, saturation indication, and independent-reader agreement. Then mount one cartridge on a retired fixture containing seeded inspectable defects and test whether the event-derived load-path queue improves defect localization over the standard inspection plan. Record attachment effects, calibration drift, false triggers, missed events, reading time, ambiguity, and completeness limits; make no operational decision from the results.","observable_state":"After a reusable payload fixture completes several handling and transport episodes, maintainers can inspect its current condition and review reported incidents but cannot determine whether unreported threshold-crossing shocks occurred, in what order, or at which instrumented load path.","prior_art_status":"UNSEARCHED","problem":"Reusable payload fixtures and transport frames can experience brief drops, collisions, and abrupt handling loads between scheduled inspections. A transient excursion may initiate joint slip, fastener damage, or composite microdamage without obvious permanent deformation, and it may never be reported. Current-condition inspections therefore lack a persistent, fixture-specific sequence of the bounded load events that could explain latent damage or justify targeted examination.","proposal_index":2,"remaining_contrastive_claim":"Even if electronic accelerometers, shock labels, and current nondestructive inspection are available, this proposal remains contrastive only if excursion energy itself creates a stable, ordered, multi-event physical record whose essential occurrence evidence survives removal of software, networking, organizational reporting, and digital control.","revision_record":{"claim_changes":["Initial candidate; no claim of novelty, prevalence, demand, or effect size is made.","The recorder is described as an experimental engineering concept whose calibration, mechanical compatibility, and decision value require testing."],"conceptual_changes":["Initial formulation maps event-centered modeling to passive physical capture of in-service shock events rather than documentary reconstruction of design qualification.","Occurrence evidence, readout reports, structural-damage inference, and engineering adjudication are explicitly separated."],"evidence_changes":["No repository inspection, external search, or prior-art review was performed; prior-art status remains unsearched.","Falsification depends on blinded physical testing against reference instrumentation and seeded inspection targets."],"operational_changes":["The authorized first step is limited to non-flight bench testing and a retired fixture.","No pilot record may change inspection, reuse, repair, or retirement decisions."],"parent_version":null,"progress_targets_addressed":["Specified a measurement-instrumentation substrate whose essential effect persists without software or governance wrappers.","Differentiated the problem, intervention, lifecycle phase, objective, and causal path materially from sealed P1.","Included bounded authority, rollback, falsifiers, risks, structural mapping, mechanism counterfactuals, and a concrete evidence step."]},"schema_version":1,"structural_mapping":[{"archetype_element":"Bounded canonical event assertion","domain_realization":"One acceleration excursion admitted by calibrated mechanical thresholds, reduced to one direction-and-highest-severity code, and permanently recorded in one indexed strip cell."},{"archetype_element":"Stable event identity","domain_realization":"The combination of cartridge serial number, strip serial number, and monotonically advancing cell position uniquely identifies a physical shock assertion."},{"archetype_element":"Participant-role and context binding","domain_realization":"Mounting records bind each cartridge to a fixture, load path, orientation, calibration, and handling interval; fixture and payload are subjects, the recorder is the instrument, and the shock source may remain unknown."},{"archetype_element":"Event time and record time","domain_realization":"Seal and inspection-boundary marks bound occurrence to an interval, while cartridge-reading and adjudication times are recorded separately; false timestamp precision is not manufactured."},{"archetype_element":"Transformation delta","domain_realization":"Shock energy advances the escapement and irreversibly transforms a blank indexed cell into an embossed direction-and-severity assertion."},{"archetype_element":"Governed append authority and validation gate","domain_realization":"Only a calibrated physical excursion can advance and mark the sealed strip; readers quarantine ambiguous cells, broken seals, expired calibration, saturation, and invalid fixture associations."},{"archetype_element":"Explicit ordering and concurrency","domain_realization":"Cell order states recorder-local occurrence order; close events that the escapement cannot resolve are marked as a coverage limit, and neither order nor computational grouping is presented as causal proof."},{"archetype_element":"Correction and supersession lineage","domain_realization":"The metal cell is never erased; calibration findings, disputed readings, invalidations, and engineering adjudications reference the original cell through appended status records."},{"archetype_element":"Versioned projection definition","domain_realization":"A declared manual worksheet or optional digital projector converts accepted cells into fixture trajectories and inspection-priority views using pinned band meanings, cartridge associations, and uncertainty rules."},{"archetype_element":"Projection frontier and completeness statement","domain_realization":"Every view states the last read cell, unread interval, recorder capacity, saturation state, seal and calibration status, uninstrumented load paths, and periods without a mounted cartridge."},{"archetype_element":"Replay and reconciliation","domain_realization":"Known drop-table sequences are replayed through the cartridge; independent strip readings and reconstructed fixture trajectories are compared with the physical cells and test reference."},{"archetype_element":"Retention, access, and minimization","domain_realization":"The cartridge records only fixture shock band, direction, order, and coarse interval, excluding personnel identity, location tracking, audio, communications, and continuous telemetry."}],"substrate_contract":{"counterfactual_independence":"Remove databases, software, algorithms, networks, dashboards, training programs, reporting incentives, and governance workflows: a threshold-crossing shock still powers the trigger, advances the escapement, and leaves an ordered irreversible mark that can be read directly. Those wrappers improve association, interpretation, and authorization but do not create the essential evidence.","forbidden_channel_audit":"The essential causal chain contains no administrative mandate, human reporting behavior, algorithmic inference, database lookup, information routing, or digital control step. The indispensable steps are inertial response, mechanical threshold selection, shock-powered ratchet advancement, and irreversible material marking. Governance limits use; it does not supply detection or memory.","primary_allowed_process":"MEASUREMENT_INSTRUMENTATION"},"title":"Passive Mechanical Shock-Event Ledger for Reusable Payload Fixtures","version":0},"schema_version":1}