{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp03_full320_20260801","cell_id":"deadweight_loss_reduction__behavioral_economics","trajectory_id":"R","attempt_index":0,"archetype_slug":"deadweight_loss_reduction","domain_slug":"behavioral_economics","decision":"CANDIDATE","problem_id":"overdue_fine_driven_library_disengagement","causal_lever_id":"replace_daily_fines_with_return_contingent_access","proposal":{"problem":"Daily library overdue fines can turn a late return into accumulating debt and borrowing suspension. Loss aversion, avoidance, and limited attention may then cause some patrons to delay returning materials or abandon library use, defeating the fine's return-promoting purpose while reducing access.","actors_substrate":["library patrons, especially liquidity-constrained or attention-limited patrons","waiting patrons","library staff and governing authority","publicly owned circulating materials"],"observable_state":"Compare overdue duration, return rate, replacement loss, borrowing reactivation, wait time, staff collection work, and outcomes by patron group before and during a bounded policy pilot.","consequence":"If the fee-induced avoidance account is correct, materials remain overdue longer and patrons disengage even though mutually beneficial return and continued borrowing remain possible.","affected_objective":"Increase timely recirculation and equitable library use without increasing material loss or materially worsening waiting-patron access.","structural_mapping":[{"archetype_element":"avoidable wedge","domain_realization":"Accumulating daily fines and debt-triggered suspension may magnify a correctable late return into disengagement.","claim_kind":"HYPOTHESIS"},{"archetype_element":"blocked beneficial activity","domain_realization":"Patrons forgo borrowing and may avoid returning items; the library loses recirculation and public-service use.","claim_kind":"INFERENCE"},{"archetype_element":"protected purpose","domain_realization":"Timely return, replacement of lost materials, and fair access for waiting patrons remain protected.","claim_kind":"INFERENCE"},{"archetype_element":"behavioral response","domain_realization":"Loss coding, shame or avoidance, present bias, and limited attention may make an escalating sanction counterproductive.","claim_kind":"HYPOTHESIS"},{"archetype_element":"less-distortive redesign","domain_realization":"Remove daily accrual while retaining reminders, temporary checkout limits, and a waivable replacement charge after a defined interval.","claim_kind":"HYPOTHESIS"}],"component_map":[{"component":"Distortion Map","status":"direct","domain_realization":"Trace late return → daily fine → accumulating balance/suspension → avoidance or disengagement."},{"component":"Protected Constraint Safeguard","status":"direct","domain_realization":"Preserve reminders, return obligations, waiting-list access, and recovery for genuinely lost items."},{"component":"Surplus Estimate","status":"direct","domain_realization":"Estimate restored borrowing and staff time against added delay, replacement loss, and wait costs; report ranges."},{"component":"Affected-Party Incidence Map","status":"direct","domain_realization":"Record effects on fined patrons, waiting patrons, staff, taxpayers, and frequent borrowers."},{"component":"Redesign Lever","status":"adapted","domain_realization":"Replace daily fines with reminders, a defined grace period, return-contingent borrowing limits, and delayed replacement billing."},{"component":"Distributional Review","status":"direct","domain_realization":"Stratify effects by debt level, age, neighborhood, disability accommodations, and borrowing intensity where lawful."},{"component":"Behavioral Response Model","status":"direct","domain_realization":"Predict return, avoidance, substitution, strategic delay, renewed borrowing, and reminder fatigue."},{"component":"Implementation Boundary","status":"direct","domain_realization":"Limit the pilot to selected branches, item classes, patrons, and a fixed period; exclude scarce special collections."},{"component":"Monitoring and Rebound Check","status":"direct","domain_realization":"Monitor overdue tails, holds, loss, replacement expense, repeat lateness, reactivation, and group incidence."},{"component":"Rollback or Adjustment Rule","status":"direct","domain_realization":"Restore or tighten controls if predefined access, loss, or wait thresholds are crossed."},{"component":"Cost–Benefit Assessment Frame","status":"direct","domain_realization":"Compare full welfare and administrative effects, not fine revenue alone."},{"component":"Price-Wedge Diagnostic","status":"direct","domain_realization":"Test whether the marginal daily charge improves return or instead induces avoidance."},{"component":"Friction Source Breakdown","status":"adapted","domain_realization":"Separate forgetfulness, inaccessible return, reminder failure, inability to pay, deliberate retention, and actual loss."},{"component":"Compensating Adjustment Plan","status":"direct","domain_realization":"Protect waiting patrons through reminders, checkout limits, transfer options, and replacement recovery."},{"component":"Legitimacy and Authority Review","status":"direct","domain_realization":"Confirm the library authority may alter fines and that revenue is not legally earmarked."},{"component":"Sensitivity Analysis","status":"direct","domain_realization":"Vary valuations of access, waiting time, staff effort, fine revenue, and replacement loss."},{"component":"Pilot or Sunset Path","status":"direct","domain_realization":"Use automatic expiry and evidence-based renewal, revision, or reversion."}],"mechanism_dispositions":[{"slug":"congestion_or_capacity_pricing_adjustment","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Peak-load pricing does not address overdue-item avoidance.","counterfactual_removal":"No change to the proposed causal chain."},{"slug":"cost_benefit_assessment_protocol","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"Compare access gains with waits, losses, revenue, and distributional effects.","counterfactual_removal":"The pilot could run, but its welfare verdict would be incomplete."},{"slug":"distortion_reduction_review","disposition":"selected_supporting","contribution_type":"CORE_CAUSAL","adaptation_or_rejection":"Tests whether daily accrual is the avoidable portion of a legitimate return rule.","counterfactual_removal":"The intervention could mistake necessary scarcity protection for distortion."},{"slug":"impact_assessment_table","disposition":"selected_supporting","contribution_type":"SAFETY_GUARDRAIL","adaptation_or_rejection":"Track each affected group's gains, losses, protections, and triggers.","counterfactual_removal":"Concentrated harms could be hidden by aggregate improvement."},{"slug":"matching_improvement_program","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"The binding hypothesis is sanction-induced avoidance, not patron-item matching.","counterfactual_removal":"No change to the proposed causal chain."},{"slug":"permit_or_approval_streamlining","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"There is no permission-review pathway to streamline.","counterfactual_removal":"No change to the proposed causal chain."},{"slug":"price_control_redesign","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"An overdue fine is an authority charge, not an administered market price protecting affordability or producers.","counterfactual_removal":"No change; fee redesign is the closer mechanism."},{"slug":"quota_or_allocation_rule_review","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Checkout limits remain safeguards; stale quota allocation is not the hypothesized wedge.","counterfactual_removal":"No change to the proposed causal chain."},{"slug":"regulatory_simplification_pilot","disposition":"selected_supporting","contribution_type":"TEST_DESIGN","adaptation_or_rejection":"Adapt its bounded, instrumented, expiring design to library branches and item classes.","counterfactual_removal":"Evidence would require a riskier or less interpretable policy change."},{"slug":"sunset_clause_review","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"Require the pilot policy to expire unless evidence supports renewal.","counterfactual_removal":"Temporary experimentation could persist without affirmative review."},{"slug":"tariff_fee_or_toll_redesign","disposition":"selected_load_bearing","contribution_type":"CORE_CAUSAL","adaptation_or_rejection":"Decompose the overdue charge into return incentive, cost recovery, revenue, and inertia; retain only justified portions.","counterfactual_removal":"The daily monetary wedge would remain, so the hypothesized avoidance mechanism would not be tested."}],"causal_chain":["A patron returns an item late.","Daily fines create an accumulating salient loss and possible suspension.","Limited attention, loss aversion, or avoidance may delay corrective action.","The item remains unavailable and the patron stops borrowing.","Removing daily accrual while retaining return-contingent safeguards lowers avoidance without eliminating accountability.","More items return and more patrons resume use, unless strategic delay or loss offsets the gain."],"baseline":"Continue daily overdue fines, ordinary reminders, balance accumulation, and borrowing suspension under the current return rules.","nearest_rival":"A reminder-only behavioral nudge that changes message timing or salience but leaves daily fines intact; it is closer if forgetfulness rather than the fee is causal.","authority_safety":{"affected_parties":["fined and unfined patrons","patrons waiting for items","library staff","taxpayers or funders"],"decision_authority":"The library board or delegated administrator, subject to governing law, contracts, and earmarked-revenue constraints.","authorized_first_step":"Run a pre-registered, time-limited pilot in selected comparable branches or item classes, preserving replacement recovery and excluding scarce or safety-critical materials.","excluded_actions":["system-wide permanent fine abolition without evidence","removal of replacement liability for lost items","use of protected traits for punitive targeting","changes outside the library authority's mandate"],"halt_rollback":"Pause enrollment and revert affected cases to the prior prospective rule if item-loss, extreme-overdue, wait-time, budget, or disparity thresholds exceed predeclared bounds; do not retroactively impose pilot-period daily fines."}},"negative_tests":{"strongest_counterevidence":"The fine may materially accelerate returns, while disengagement may instead arise from inaccessible return options, reminder failure, or unrelated life constraints; removing it could increase strategic delay and harm waiting patrons.","analogy_break":"Library items are rivalrous and sometimes scarce: some deterrence protects third-party access, so treating every foregone checkout or sanction as deadweight loss would erase a real externality.","failure_condition":"The problem framing fails if fine exposure does not predict return delay or disengagement after credible comparison, or if the dominant barrier is logistical friction rather than sanction-induced avoidance.","problem_falsifier":"Under comparable exposure and adequate measurement, patrons subject to daily fines show no greater avoidance, delayed return, or borrowing attrition than patrons facing equally strong nonmonetary return controls.","intervention_falsifier":"The bounded redesign fails if it does not improve return or reactivation, or if increased long-overdue items, loss, waiting time, cost, or inequitable burden exceeds predeclared limits.","risks":["strategic late return","longer holds and reduced access for waiting patrons","higher replacement costs or revenue loss","pilot spillovers across branches","unequal reminder access","mistaking correlation between debt and disengagement for fee causation"]},"null_rationale":null,"classification":{"candidate_kind":"MECHANISM_ADAPTATION","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":0.83,"generator_notes":"Closed-book structural candidate. Domain-specific causal and empirical claims are explicitly treated as hypotheses or inferences; no prior-art claim is made."}