{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp03_full320_20260801","cell_id":"layer_decay_and_expiration_management__chemistry_materials","trajectory_id":"R","attempt_index":0,"archetype_slug":"layer_decay_and_expiration_management","domain_slug":"chemistry_materials","decision":"CANDIDATE","problem_id":"aging_material_sample_library_misclassification_and_overretention","causal_lever_id":"sample_state_gated_retention_and_reversible_disposition","proposal":{"problem":"Materials laboratories accumulate powders, films, formulations, and reference aliquots whose chemical or physical state can drift through oxidation, moisture uptake, phase change, contamination, or container degradation. Without explicit validity, retention, dependency, and disposition states, aged samples consume controlled storage and may be treated as representative material, while indiscriminate disposal can erase evidence needed for reproducibility, failure analysis, or provenance.","actors_substrate":["materials researchers and laboratory managers","sample owners and downstream experimenters","environmental health and safety personnel","physical sample containers, aliquots, films, and powders","sample metadata and provenance records","controlled cabinets, freezers, desiccators, and archive storage"],"observable_state":"A sample-level register shows identity, batch lineage, creation and last-validation dates, storage history, inferred staleness, hazards, dependencies, retention class, access tier, exceptions, and current lifecycle state.","consequence":"Potentially invalid samples are removed from ordinary selection before they mislead experiments; low-use samples move to cheaper or safer storage; destruction occurs only after dependency review and a reversible quarantine; retained history remains locatable and testable.","affected_objective":"Reduce invalid-sample reuse, storage burden, and unmanaged chemical risk while preserving reproducibility, provenance, and failure-investigation capability.","structural_mapping":[{"archetype_element":"sequentially accumulated layers","domain_realization":"Successive physical material lots, retained aliquots, films, and reference specimens deposited into a laboratory sample collection.","claim_kind":"INFERENCE"},{"archetype_element":"changed usefulness or validity with age","domain_realization":"Stored materials may cease to represent their documented state because chemical, structural, or container conditions change.","claim_kind":"HYPOTHESIS"},{"archetype_element":"stale layer mistaken for current truth","domain_realization":"An aged specimen may be selected as a valid reference or feedstock because its label remains active despite unverified present condition.","claim_kind":"HYPOTHESIS"},{"archetype_element":"retention and exception rules","domain_realization":"Sample classes receive review periods, hazard constraints, project or evidentiary holds, and named preservation exceptions.","claim_kind":"INFERENCE"},{"archetype_element":"dependency-safe reversible disposition","domain_realization":"Before destruction, staff check cited experiments, active studies, unique synthesis lineage, and reconstruction value, then quarantine the sample.","claim_kind":"INFERENCE"},{"archetype_element":"archival recoverability","domain_realization":"Archived specimens remain identity-linked, retrievable, and subject to condition verification; retrieval cannot reverse intrinsic material aging.","claim_kind":"INFERENCE"}],"component_map":[{"component":"layer_inventory_and_identity_map","status":"adapted","domain_realization":"Unique sample, batch, container, aliquot, and parent-child identities."},{"component":"deposition_order_and_age_index","status":"direct","domain_realization":"Creation, receipt, opening, treatment, and last-validation timestamps."},{"component":"retention_policy_matrix","status":"adapted","domain_realization":"Sample class by minimum retention, review interval, hazard rule, and disposition."},{"component":"decay_function_or_aging_rule","status":"adapted","domain_realization":"Material- and storage-specific review priority curve, not assumed chemical kinetics."},{"component":"expiration_trigger_definition","status":"adapted","domain_realization":"Elapsed review period, failed condition check, breached container, project closure, or supersession triggers review."},{"component":"layer_value_and_risk_score","status":"adapted","domain_realization":"Reproducibility value, uniqueness, replacement cost, hazard, condition confidence, and demand score."},{"component":"dependency_and_reconstruction_check","status":"direct","domain_realization":"Check active experiments, publications, investigations, and unique synthesis lineage before disposition."},{"component":"pruning_or_archival_pathway","status":"adapted","domain_realization":"Refresh characterization, split, relocate, quarantine, return, neutralize, or dispose."},{"component":"preservation_exception_register","status":"direct","domain_realization":"Named holds for unique, evidentiary, historical, or hard-to-recreate samples."},{"component":"deletion_audit_and_rollback_window","status":"adapted","domain_realization":"Logged quarantine interval before irreversible destruction."},{"component":"resource_budget_and_storage_tier","status":"direct","domain_realization":"Capacity and cost limits for controlled cabinets, freezers, desiccators, and archives."},{"component":"review_cadence_and_revalidation_loop","status":"direct","domain_realization":"Periodic owner review and sampled condition recharacterization."},{"component":"legal_hold_or_compliance_override","status":"adapted","domain_realization":"Investigation, contractual, regulatory, or waste-handling hold."},{"component":"hot_warm_cold_access_state","status":"adapted","domain_realization":"Bench-active, nearby controlled storage, central archive, or disposal quarantine."},{"component":"orphan_layer_detection","status":"adapted","domain_realization":"Samples with no owner, live project, cited dependency, or unique lineage role."},{"component":"supersession_marker","status":"direct","domain_realization":"Record identifying replacement batch, refreshed reference, quarantine, or destruction."},{"component":"layer_compaction_candidate_flag","status":"adapted","domain_realization":"Flag compatible duplicate aliquots for consolidation only when identity and stability are preserved."},{"component":"rehydration_or_restore_procedure","status":"adapted","domain_realization":"Retrieve, equilibrate safely, inspect, and verify identity and condition before reuse."},{"component":"deletion_impact_estimate","status":"direct","domain_realization":"Estimate lost reproducibility, uniqueness, affected studies, hazard, and recreation effort."},{"component":"stale_context_detector","status":"adapted","domain_realization":"Detect overdue validation, changed specification, failed condition indicators, or superseding batch."}],"mechanism_dispositions":[{"slug":"age_weighted_value_score","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"Ranks review candidates using age, condition confidence, uniqueness, hazard, and reconstruction value; age never overrides a hold or hazard rule.","counterfactual_removal":"Triage becomes slower and less consistent, but class rules and safety gates still function."},{"slug":"archive_restore_test","disposition":"selected_supporting","contribution_type":"TEST_DESIGN","adaptation_or_rejection":"Periodically retrieves archived specimens and verifies identity, container integrity, accessibility, and fitness testing; it does not claim to reverse aging.","counterfactual_removal":"Archive accessibility and condition failures may remain latent until an urgent reuse."},{"slug":"cache_eviction_rule","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Immediate eviction based on access recency is unsafe for hazardous, unique, or evidentiary physical samples.","counterfactual_removal":"No material loss; planned tiering supplies capacity control without access-only eviction."},{"slug":"dependency_safe_delete_check","disposition":"selected_load_bearing","contribution_type":"SAFETY_GUARDRAIL","adaptation_or_rejection":"Destruction is blocked until live experimental, provenance, evidentiary, and reconstruction dependencies are resolved.","counterfactual_removal":"Cleanup could irreversibly break reproducibility or an active investigation."},{"slug":"lifecycle_storage_tiering_policy","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"Moves eligible specimens among access and control tiers subject to compatibility, stability, and hazard constraints.","counterfactual_removal":"Validity gating remains, but controlled storage stays congested and costly."},{"slug":"log_rotation_and_cleanup_job","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Generational position is too content-blind for heterogeneous physical specimens, and samples cannot safely be purged as an append-only stream.","counterfactual_removal":"No material loss because sample-specific review replaces blind rotation."},{"slug":"retention_schedule","disposition":"selected_load_bearing","contribution_type":"CORE_CAUSAL","adaptation_or_rejection":"Defines class-specific review and retention rules plus investigation, safety, and evidentiary exceptions; expiration initiates review rather than automatic destruction.","counterfactual_removal":"Samples remain active by default and disposition authority becomes ad hoc."},{"slug":"soft_delete_quarantine_window","disposition":"selected_load_bearing","contribution_type":"SAFETY_GUARDRAIL","adaptation_or_rejection":"Moves approved candidates to labeled, access-restricted quarantine before authorized disposal; unstable materials may require a shorter EHS-controlled path.","counterfactual_removal":"Selection or metadata errors can become irreversible at disposal."},{"slug":"stale_layer_detection_dashboard","disposition":"selected_load_bearing","contribution_type":"CORE_CAUSAL","adaptation_or_rejection":"Provides the identity-resolved inventory and flags overdue validation, supersession, storage excursions, and contradictory specifications.","counterfactual_removal":"Aged or suspect samples remain indistinguishable from currently valid specimens."},{"slug":"time_to_live_ttl_policy","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"A class-specific clock triggers revalidation, demotion, or disposition review, never unattended chemical destruction.","counterfactual_removal":"Reviews depend more heavily on periodic sweeps and stale samples remain active longer."},{"slug":"tombstone_or_deletion_marker","disposition":"selected_supporting","contribution_type":"SAFETY_GUARDRAIL","adaptation_or_rejection":"Retains a small provenance record after physical disposal, including reason, authority, date, and successor identity.","counterfactual_removal":"Missing samples become ambiguous and old references may be mistaken for inventory errors."}],"causal_chain":["Resolve sample identities and lineage, then expose condition and validation gaps.","Class rules and staleness signals move suspect samples out of ordinary active selection.","Value, hazard, uniqueness, and dependency checks assign refresh, tier, preserve, quarantine, or disposal paths.","Quarantine and recorded authority make removal reversible before destruction.","Restore drills and periodic revalidation test whether retained archives remain retrievable and usable.","The active collection becomes smaller and less misleading without silently erasing provenance."],"baseline":"Samples remain wherever deposited until an owner notices crowding, a project ends, or a one-time purge occurs; labels commonly retain active status without scheduled condition review.","nearest_rival":"A conventional LIMS inventory with fixed discard dates: it improves location tracking but does not necessarily gate current validity, model material-specific aging, check dependencies, or provide reversible disposition.","authority_safety":{"affected_parties":["sample owners","downstream experimenters","laboratory operations staff","environmental health and safety personnel","collaborators relying on provenance or reproducibility"],"decision_authority":"The laboratory manager may change visibility and storage tier; irreversible disposal additionally requires the sample owner or delegated scientific custodian and EHS approval where hazard rules apply. Investigation or compliance holds override disposal.","authorized_first_step":"Pilot on at most 200 samples in one storage unit for one review cycle: inventory and label them, hide high-confidence stale candidates from routine selection, condition-check a stratified subset, and quarantine but do not destroy approved candidates.","excluded_actions":["automatic destruction based only on age or score","mixing or consolidating chemically incompatible samples","opening or moving hazardous containers without approved controls","overriding investigation, contractual, regulatory, or evidentiary holds","claiming archived material has been chemically restored without measurement"],"halt_rollback":"Halt if identity conflicts, unexpected container degradation, unsafe handling conditions, an unresolved live dependency, or more than 5% of reviewed samples are wrongly classified as stale. Restore quarantined samples to their prior controlled location and active metadata state; preserve all audit records."}},"negative_tests":{"strongest_counterevidence":"An audited sample collection could show that current labels already track measured condition, storage capacity is not constraining, invalid-sample selection is negligible, and existing disposal never impairs reproducibility; that would remove most claimed benefit.","analogy_break":"Physical samples are not digital records: aging may be irreversible, assays can consume material, compaction can change composition, and no restore operation can recreate a destroyed unique specimen. Therefore archival and rollback apply to custody and metadata, not guaranteed chemical-state recovery.","failure_condition":"The approach fails if sample identities and dependencies cannot be resolved well enough to distinguish safe disposition from loss of unique scientific evidence, or if safe quarantine capacity is unavailable.","problem_falsifier":"The problem is falsified if blinded audits find no meaningful association among sample age or storage history, present-condition uncertainty, mistaken reuse, controlled-storage burden, or reconstruction loss.","intervention_falsifier":"The intervention is falsified if the bounded pilot does not reduce selection of overdue or superseded samples or active-tier occupancy relative to baseline, while increasing retrieval delay, classification error, safety incidents, or loss of needed specimens.","risks":["Composite scores create false precision and may undervalue old but unique specimens.","Metadata can miss informal external dependencies.","Moving samples can cause exposure, incompatibility, temperature excursions, or container failure.","Quarantine may conflict with requirements for prompt destruction of unstable or regulated material.","Tiering can delay access or worsen preservation conditions.","Consolidation or testing may consume or alter scarce material."]},"null_rationale":null,"classification":{"candidate_kind":"MECHANISM_COMPOSITION","prior_art_status":"UNSEARCHED","evidence_maturity":"HYPOTHESIS"},"revision_change_log":{"revision_kind":"ORIGINAL","prior_problem_id":null,"prior_causal_lever_id":null,"problem_changed":false,"causal_lever_changed":false,"conceptual_changes":[],"operational_changes":[],"repairs_addressed":[]},"confidence":0.84,"generator_notes":"Closed-book structural transfer. Domain-specific prevalence, degradation rates, and expected effect sizes are hypotheses; the proposal deliberately treats age as a review signal rather than evidence of chemical invalidity."}