{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp03_full320_20260801","cell_id":"layer_decay_and_expiration_management__nanotechnology","trajectory_id":"R","attempt_index":0,"archetype_slug":"layer_decay_and_expiration_management","domain_slug":"nanotechnology","decision":"CANDIDATE","problem_id":"aging_nanomaterial_specimen_accumulation","causal_lever_id":"state_gated_nanomaterial_specimen_retirement","proposal":{"problem":"Nanotechnology laboratories can accumulate old nanoparticle batches, aliquots, fabricated substrates, and witness coupons whose properties or experimental relevance may have changed, while ambiguous identity, dependencies, and retention duties make both continued use and disposal risky. Legacy specimens may be mistaken for current reference material, occupy controlled storage, or create exposure burdens; indiscriminate disposal can erase reproducibility, investigation, and lineage evidence.","actors_substrate":["nanomaterial researchers and laboratory managers","environmental health and safety personnel","quality or repository custodians","physical nanomaterial batches, aliquots, substrates, and coupons","publications, calibrations, and experiments dependent on retained specimens"],"observable_state":"For each specimen: unique identity, material class, synthesis/deposition date, storage history, last access, latest characterization, suspected degradation, hazard class, supersession, dependent outputs, retention basis, lifecycle state, and disposition history.","consequence":"Old or altered specimens remain usable by default, while delayed or improvised cleanouts increase storage, safety, misidentification, and reproducibility risks.","affected_objective":"Keep the active specimen collection current, traceable, safe, and bounded without destroying material still needed for verification or reconstruction.","structural_mapping":[{"archetype_element":"sequentially accumulated layers","domain_realization":"Successive nanomaterial lots, aliquots, substrates, and witness coupons retained across fabrication and characterization campaigns.","claim_kind":"HYPOTHESIS"},{"archetype_element":"changing layer validity","domain_realization":"A specimen's representativeness may change with storage history, contamination, aggregation, oxidation, or changed protocols even when it still physically exists.","claim_kind":"HYPOTHESIS"},{"archetype_element":"stale layer mistaken for current truth","domain_realization":"An inadequately labeled legacy batch may be reused as a current reference or assumed equivalent to a superseding batch.","claim_kind":"HYPOTHESIS"},{"archetype_element":"dependency-preserving retirement","domain_realization":"Retirement is gated on links to publications, calibrations, investigations, and downstream specimens, then routed to recharacterization, archive, quarantine, or approved disposal.","claim_kind":"INFERENCE"},{"archetype_element":"bounded stack with retained memory","domain_realization":"Only validated and frequently needed specimens remain active; selected reference aliquots and durable metadata preserve reconstruction value.","claim_kind":"INFERENCE"}],"component_map":[{"component":"layer_inventory_and_identity_map","status":"direct","domain_realization":"Unique specimen and parent-lot registry."},{"component":"deposition_order_and_age_index","status":"direct","domain_realization":"Synthesis, deposition, aliquoting, and receipt timestamps."},{"component":"retention_policy_matrix","status":"adapted","domain_realization":"Rules by material, hazard, project, and evidentiary class."},{"component":"decay_function_or_aging_rule","status":"adapted","domain_realization":"Material-specific retest intervals or conservative aging flags."},{"component":"expiration_trigger_definition","status":"adapted","domain_realization":"Elapsed interval, failed recharacterization, supersession, or project closure triggers review, not automatic destruction."},{"component":"layer_value_and_risk_score","status":"adapted","domain_realization":"Triage using dependency value, recreation cost, condition, hazard, and storage burden."},{"component":"dependency_and_reconstruction_check","status":"direct","domain_realization":"Check publications, calibrations, investigations, derived samples, and lineage."},{"component":"pruning_or_archival_pathway","status":"adapted","domain_realization":"Recharacterize, demote, retain representative aliquot, quarantine, or dispose."},{"component":"preservation_exception_register","status":"direct","domain_realization":"Named reference, investigation, historical, or hard-to-recreate exceptions."},{"component":"deletion_audit_and_rollback_window","status":"adapted","domain_realization":"Pending-disposal quarantine with signed record before irreversible destruction."},{"component":"resource_budget_and_storage_tier","status":"adapted","domain_realization":"Budgets for conditioned active storage, archive space, and hazardous-waste staging."},{"component":"review_cadence_and_revalidation_loop","status":"direct","domain_realization":"Periodic owner and EHS review of flags and exceptions."},{"component":"legal_hold_or_compliance_override","status":"adapted","domain_realization":"Safety, quality, sponsor, investigation, or legal hold blocks disposal."},{"component":"hot_warm_cold_access_state","status":"adapted","domain_realization":"Active bench stock, conditioned repository, deep archive, and quarantine states."},{"component":"orphan_layer_detection","status":"direct","domain_realization":"Find specimens without a live owner, dependency, or retention basis."},{"component":"supersession_marker","status":"adapted","domain_realization":"Label legacy lot as replaced and point to the validated successor."},{"component":"layer_compaction_candidate_flag","status":"adapted","domain_realization":"Flag metadata consolidation or representative-aliquot retention; never merge distinct lots."},{"component":"rehydration_or_restore_procedure","status":"adapted","domain_realization":"Controlled retrieval, identity confirmation, equilibration, and recharacterization."},{"component":"deletion_impact_estimate","status":"direct","domain_realization":"Estimate lost reproducibility, recreation effort, dependent work, and disposal hazard."},{"component":"stale_context_detector","status":"direct","domain_realization":"Flag outdated characterization, changed protocols, suspect condition, or departed ownership."}],"mechanism_dispositions":[{"slug":"age_weighted_value_score","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"Ranks review candidates, with hazard and dependency vetoes; age alone cannot authorize disposal.","counterfactual_removal":"Triage becomes slower but lifecycle gating still functions."},{"slug":"archive_restore_test","disposition":"selected_supporting","contribution_type":"TEST_DESIGN","adaptation_or_rejection":"Sample archived specimens and prove retrieval, identity, condition, and usability.","counterfactual_removal":"Archive recoverability and condition remain assumed rather than tested."},{"slug":"cache_eviction_rule","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Access recency is unsafe as an instantaneous victim rule for unique physical specimens.","counterfactual_removal":"No material causal change."},{"slug":"dependency_safe_delete_check","disposition":"selected_load_bearing","contribution_type":"CORE_CAUSAL","adaptation_or_rejection":"Blocks retirement while any live scientific, lineage, calibration, or investigation dependency remains.","counterfactual_removal":"Cleanup can destroy reproducibility or investigation evidence."},{"slug":"lifecycle_storage_tiering_policy","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"Moves specimens among active, conditioned archive, and quarantine states without equating demotion with destruction.","counterfactual_removal":"Active storage stays congested even if disposal decisions improve."},{"slug":"log_rotation_and_cleanup_job","disposition":"incompatible","contribution_type":"NONE","adaptation_or_rejection":"Blind generational shifting does not respect heterogeneous physical specimens or dependencies.","counterfactual_removal":"No material causal change."},{"slug":"retention_schedule","disposition":"selected_load_bearing","contribution_type":"CORE_CAUSAL","adaptation_or_rejection":"Defines class-specific minimums, maximums, review points, exceptions, and holds.","counterfactual_removal":"Disposition lacks consistent authority and exceptions become ad hoc."},{"slug":"soft_delete_quarantine_window","disposition":"selected_load_bearing","contribution_type":"SAFETY_GUARDRAIL","adaptation_or_rejection":"Segregates candidates in recoverable pending-disposal storage before authorized destruction.","counterfactual_removal":"Misclassification becomes immediately irreversible."},{"slug":"stale_layer_detection_dashboard","disposition":"selected_load_bearing","contribution_type":"CORE_CAUSAL","adaptation_or_rejection":"Combines identity-resolved inventory with condition, context, and ownership flags.","counterfactual_removal":"Stale specimens remain invisible and continue masquerading as active references."},{"slug":"time_to_live_ttl_policy","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"A fixed clock may trigger review but must not self-destroy scientifically unique material.","counterfactual_removal":"Review can use explicit intervals without blind expiry."},{"slug":"tombstone_or_deletion_marker","disposition":"selected_supporting","contribution_type":"SAFETY_GUARDRAIL","adaptation_or_rejection":"Retains identity, reason, date, authorization, and successor after physical disposal.","counterfactual_removal":"Absence becomes ambiguous and lineage searches may misinterpret deletion."}],"causal_chain":["Resolve specimen identities and expose age, condition, ownership, and supersession.","Apply class rules and material-specific review triggers to identify stale candidates.","Gate every candidate on dependencies, holds, and preservation value.","Move eligible specimens out of active use into labeled archive or quarantine.","Test retrieval during quarantine and restore any disputed or newly needed specimen.","After authority approval, dispose safely while retaining a tombstone and decision record."],"baseline":"Ad hoc shelves, freezers, and cabinets; labels and spreadsheets vary by project, old specimens stay active until space pressure prompts a manual cleanout.","nearest_rival":"A fixed-age purge or project-end cleanout that reduces inventory without condition assessment, dependency checks, exceptions, or reversible quarantine.","authority_safety":{"affected_parties":["specimen creators and users","downstream researchers","laboratory and repository staff","EHS and waste handlers","sponsors or investigators relying on retained evidence"],"decision_authority":"The specimen-owning principal investigator or repository custodian approves lifecycle state; EHS must approve hazardous handling and final disposal, and designated quality or legal owners control holds.","authorized_first_step":"Pilot on at most 100 specimens from one material class for 12 weeks: inventory and label all, compare baseline retrieval and stale-use errors, and quarantine at most 10 dependency-cleared candidates without destroying them.","excluded_actions":["automatic physical destruction from age or score alone","mixing or consolidating chemically distinct lots","opening or moving hazardous specimens without approved controls","overriding legal, safety, quality, sponsor, or investigation holds","treating archived material as usable without identity and condition checks"],"halt_rollback":"Halt on an unresolved dependency, identity conflict, containment problem, exposure incident, or disputed hold; return quarantined specimens to their prior controlled state and preserve all records."}},"negative_tests":{"strongest_counterevidence":"The packet supplies no observations that nanomaterial repositories actually suffer consequential stale reuse or unbounded accumulation; some facilities may already have effective inventory, EHS, and quality controls.","analogy_break":"Physical nanomaterials are not losslessly archived data: storage can change nanoscale properties, retrieval may require destructive testing, and disposed material cannot be rehydrated from metadata.","failure_condition":"The approach fails if specimen identity and dependencies cannot be resolved, aging cannot be distinguished from acceptable variation, or quarantine cannot safely retain the hazard class.","problem_falsifier":"A representative audit finds no material accumulation, no stale or misidentified reuse, no meaningful storage or safety burden, and no reproducibility loss from current disposal practices.","intervention_falsifier":"Against the baseline, the pilot does not improve retrieval accuracy or detection of non-current specimens, does not reduce active-storage burden, or produces false retirement, condition loss, or safety events exceeding its benefits.","risks":["Composite scores create false precision.","Extra handling can expose workers or contaminate specimens.","Quarantine prolongs possession of hazardous material.","Recharacterization may consume unique samples.","Poor dependency data can falsely label a specimen orphan.","Tier changes may accelerate degradation.","Governance burden may exceed benefits for small collections."]},"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":0.74,"generator_notes":"Closed-book structural transfer. The candidate is strongest for managed physical specimen repositories, not for automatic expiration of nanomaterials themselves; all domain-specific prevalence and performance claims remain hypotheses."}