{"abstention_reason":null,"arm":"SUBSTRATE_DIVERSE_P2","candidate_id":"event_log_centered_modeling__sport_science__SUBSTRATE_DIVERSE_P2","cell_id":"event_log_centered_modeling__sport_science","decision":"PROPOSAL","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","proposal":{"actors":["Athletes performing controlled landing and jumping trials","Biomechanists who define valid force events and interpret force-time traces","Laboratory technicians who configure footwear, surfaces, sensors, and calibration checks","Equipment engineers responsible for force-plate and recorder integrity","Research leads who authorize exclusions and conclusions","Data stewards who govern coded participant references, access, retention, and correction lineage"],"affected_objective":"Determine whether changes observed across repeated landing trials reflect athlete movement, footwear or surface configuration, or measurement-system drift, so biomechanical findings are reproducible without using the instrument as an automatic injury-screening or participation authority.","arm":"SUBSTRATE_DIVERSE_P2","authority_safety":{"authorized_first_step":"Bench-test one recorder channel using a mechanical impactor and traceable calibration loads, producing a write-once witness roll with pre-block and post-block calibration events; no athlete testing or operational decision is authorized in the first step.","decision_authority":"The laboratory director controls equipment use, a qualified biomechanist determines trial validity and scientific interpretation, equipment engineers control calibration and maintenance, research oversight controls human-subject use, and medical or coaching authorities retain all injury, participation, and training decisions.","excluded_actions":["Automatically diagnosing injury, estimating injury probability, or clearing or restricting participation","Changing an athlete's training, selection, compensation, or return-to-play status from recorded impacts","Treating temporal order or force magnitude alone as evidence of fatigue, intent, technique quality, or causation","Concealing failed calibration brackets, recorder saturation, channel dropout, or disputed trial exclusions","Overwriting or cutting unfavorable traces from the canonical witness medium","Recording names or unnecessary health information on the physical roll","Using unvalidated force thresholds as universal norms across sports, bodies, footwear, or adaptive equipment"],"halt_rollback":"Stop if a calibration event falls outside its predefined tolerance, the recorder saturates, channel alignment is lost, event identifiers repeat, or coded identity is exposed. Quarantine the affected roll and derived results, append a failure record, invalidate the bracketed trial block, and return the apparatus to bench calibration; do not erase or reinterpret affected traces as valid athlete evidence."},"baseline":"Many landing laboratories retain processed peak force, loading-rate, impulse, or center-of-pressure values in editable trial tables while raw waveforms, acquisition order, invalid-attempt decisions, and calibration state are stored inconsistently or overwritten. A changed summary can therefore be attributed to the athlete even when it arose from platform hysteresis, sensor drift, recorder saturation, footwear configuration, or a revised exclusion.","candidate_id":"event_log_centered_modeling__sport_science__SUBSTRATE_DIVERSE_P2","causal_chain":["A landing produces a short, spatially distributed ground-reaction impulse whose waveform depends jointly on the athlete, footwear, surface, force plate, and immediately preceding mechanical history.","Retaining only mutable per-trial features discards the bounded physical occurrence, channel waveform, acquisition order, configuration, and calibration bracket needed to distinguish athlete change from apparatus or surface effects.","Unseen drift, hysteresis, saturation, or changed exclusions can consequently create an apparent biomechanical trajectory that cannot be reconstructed from the summary table.","The intervention converts every threshold-crossing landing and every calibration strike into a physically inscribed, serially indexed event on a continuous write-once witness roll, preserving synchronized load-channel traces and configuration marks.","Calibration events before and after each trial block bound the instrument state, while continuous medium position establishes source-local order without claiming causal order.","Linked annotation slips preserve exclusions, disputes, and corrections without altering the original trace; stable punched identifiers prevent the same trace from being counted twice.","Researchers replay the physical events under a declared projection rule to derive peak force, impulse, loading-rate, spatial-balance, and trial-validity views, with calibration gaps and unresolved records kept visible.","Comparing rebuilt projections with reported results exposes transcription changes, unjustified exclusions, and instrument-dependent apparent trends before scientific conclusions are accepted."],"cell_id":"event_log_centered_modeling__sport_science","consequence":"Apparent improvements, deterioration, asymmetry, or intervention effects may be artifacts of measurement drift or mutable trial handling. This weakens reproducibility, can misdirect technique research, and may encourage inappropriate athlete-level conclusions from summaries that no longer preserve the physical events that generated them.","diversity_from_prior_proposals":"P1 addresses asynchronous training, recovery, wellness, and availability assertions used for daily planning through a multi-source athlete-exposure ledger. This proposal instead addresses experimental misattribution of landing biomechanics and intervenes with an electromechanical, write-once force-event recorder whose causal path runs through physical transduction, calibration bracketing, and preservation of impact waveforms; it does not collect workload or recovery history or support daily coaching decisions.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","intervention":"Install a calibration-bracketed landing-impact chronograph: a force plate with independently conditioned load channels connected to a threshold-triggered oscillographic recorder that inscribes synchronized force-time traces on a continuous tamper-evident physical roll. The apparatus requires no computer for acquisition. A mechanical index punches a unique event number and medium position beside every athlete landing, calibration strike, aborted trigger, and channel-fault event. Interchangeable coded configuration tabs mark plate, surface, footwear condition, and pseudonymous participant reference without names. Traceable calibration impacts are recorded immediately before and after each trial block. The uncut roll is the canonical event substrate; exclusions, corrections, and identity disputes are added on serially linked annotation slips rather than by altering traces. Named projection protocols can later measure peaks, impulses, loading rates, inter-channel balance, and valid-trial trajectories manually or through optional digitization, but every reported view must identify its roll interval, event identifiers, calibration bracket, ordering rule, analysis version, unresolved events, and completeness frontier.","mechanism_mapping":[{"counterfactual_removal":"Without the continuous write-once roll, landing waveforms and unfavorable or failed trials can be overwritten, selectively exported, or separated from acquisition order, preventing faithful reconstruction.","mechanism_slug":"append_only_event_store","role":"Realizes the canonical event log as a tamper-evident physical medium carrying original force traces and linked correction lineage."},{"counterfactual_removal":"Without the trigger, printed configuration fields, and synchronized channels, the roll would contain ambiguous signals rather than bounded landing assertions with participants, context, transformation evidence, and provenance.","mechanism_slug":"event_capture_template","role":"Defines each force event through threshold boundaries, channel traces, configuration tabs, calibration state, and coded participant roles."},{"counterfactual_removal":"Without mechanically punched identifiers, repeat digitization or overlapping exports could count one physical landing more than once or detach an annotation from its source trace.","mechanism_slug":"event_replay_deduplication","role":"Provides stable physical event identity for deduplication, exclusions, disputes, and replay."},{"counterfactual_removal":"Without calibration events physically bracketing trial blocks, researchers cannot tell whether an apparent athlete trajectory coincided with sensor drift, hysteresis, or channel imbalance.","mechanism_slug":"bitemporal_event_register","role":"Pairs occurrence position and clock marks with later receipt or annotation marks while preserving the instrument state evidenced before and after the occurrence block."},{"counterfactual_removal":"Without a declared replay protocol, analysts can choose different baselines, windows, filters, or exclusions and present incompatible summaries as though they were direct measurements.","mechanism_slug":"deterministic_replay_protocol","role":"Reapplies a pinned measurement and exclusion protocol to identified physical traces to regenerate reported biomechanical features."},{"counterfactual_removal":"Without rebuilding and comparing reported values, transcription changes, altered exclusions, and analysis-version drift can remain hidden even though the source traces survive.","mechanism_slug":"projection_rebuild_and_diff","role":"Regenerates biomechanical views from the witness roll and compares them with published or live result tables."}],"nearest_rivals":["A standard digital force-plate export: it may preserve raw waveforms, but acquisition files can be selectively saved, renamed, overwritten, or detached from calibration and exclusion lineage.","High-speed video of landing trials: it preserves visible motion but does not directly record the synchronized ground-reaction force waveform or load-channel calibration state.","A laboratory calibration certificate: it establishes performance at inspection time but does not bracket each experimental block or preserve the intervening landing sequence.","A bound paper trial notebook: it can document configurations and exclusions but does not itself transduce and preserve the short-duration force event.","An editable table containing one row per trial: it is event-shaped but remains a derived feature view rather than the canonical physical measurement history."],"negative_tests":{"intervention_falsifier":"The intervention is falsified if blinded replay of identified roll segments cannot reproduce predeclared force features within measurement tolerance, if calibration bracketing fails to reveal induced drift or channel imbalance, or if the physical recorder materially alters or truncates waveforms needed for the stated conclusions.","problem_falsifier":"The problem is falsified if the existing laboratory already preserves every raw synchronized waveform immutably with unique trial identity, source-local order, configuration, calibration brackets, correction and exclusion lineage, and reproducible analysis versions, and sampled rebuilds match reported results without mutable external state.","risks":["Recorder bandwidth or paper speed may alias short impact transients.","Physical media may tear, fade, jam, or be misaligned across channels.","Threshold triggering may miss low-force contacts or split one landing into multiple events.","Calibration impacts may not reproduce athlete loading directions or surface behavior.","Coded configuration tabs may be attached incorrectly or expose participant identity through linkage.","Manual trace measurement may introduce reader variability.","The apparatus may change laboratory workflow or athlete targeting enough to alter the movement being studied.","Researchers may overinterpret a preserved force event as causal evidence of fatigue, injury, or technique quality.","Physical rolls create retention, access-control, and secure-destruction obligations.","A write-once medium can preserve erroneous or sensitive annotations unless minimization and governed redaction are designed."],"strongest_counterevidence":"Modern force-plate systems may already preserve lossless raw waveforms, calibration metadata, immutable file hashes, and complete trial manifests more accurately and cheaply than an oscillographic roll. The physical recorder could also introduce bandwidth limits and handling errors that outweigh its evidentiary benefit."},"next_evidence_step":"Use a mechanical impactor to deliver a randomized sequence of 40 known impulses across four plate locations, including induced zero drift, one channel-gain change, two repeated acquisition identifiers, one sub-threshold contact, and one saturated strike. Freeze event boundaries, identifier rules, calibration tolerances, feature definitions, and failure criteria beforehand. Have two blinded analysts independently replay the physical roll and compare event count, order, peak, impulse, channel balance, detected faults, and duplicate handling against the impactor reference and the laboratory's ordinary acquisition output.","observable_state":"For a reported landing-trial result, investigators can see derived force features but cannot consistently retrieve an unbroken ordered record containing the original synchronized trace, exact plate and surface configuration, immediately surrounding calibration events, aborted triggers, exclusions, and later corrections. Reanalysis can therefore change which trials or features constitute the result without leaving a reproducible lineage.","prior_art_status":"UNSEARCHED","problem":"Repeated landing and jump experiments use peak force, impulse, loading rate, and asymmetry to compare techniques, footwear, surfaces, or interventions. When laboratories retain mutable feature rows instead of an ordered history of original force events and calibration events, platform drift, hysteresis, channel faults, saturation, changed configurations, and revised trial exclusions can masquerade as athlete biomechanical change. The reported trajectory cannot reliably be reconstructed or separated from the measurement system's own history.","proposal_index":2,"remaining_contrastive_claim":"For experimental landing biomechanics, the defining move is to make each physically transduced landing waveform and its calibration context the canonical event, with feature tables treated as discardable projections. A notebook, calibration certificate, video, audit trail, or editable trial table does not satisfy the claim unless the bounded force events alone can regenerate the reported view and expose acquisition gaps and corrections.","revision_record":{"claim_changes":[],"conceptual_changes":[],"evidence_changes":[],"operational_changes":[],"parent_version":null,"progress_targets_addressed":["Material independence from P1 established across problem, intervention, affected decision, and causal path","Primary causal substrate made measurement-instrumentation rather than governance or computation","Event boundaries, stable physical identities, ordering, calibration provenance, and append-only correction specified","Derived biomechanical views made replayable from canonical physical traces","Bench-first testing, falsifiers, authority limits, hazards, and rollback defined"]},"schema_version":1,"structural_mapping":[{"archetype_element":"Event boundary and type contract","domain_realization":"A force event begins when a conditioned plate channel crosses the validated trigger boundary and ends after all channels remain below the release boundary for the specified dwell time; calibration strikes, athlete landings, aborted triggers, saturation, and channel faults are distinct event types."},{"archetype_element":"Canonical event record","domain_realization":"A serially indexed segment of the uncut witness roll carries synchronized force traces, clock marks, configuration tabs, coded participant roles, recorder state, and validity marks."},{"archetype_element":"Event identity key","domain_realization":"A mechanically punched monotonic identifier plus roll serial and medium position distinguishes every landing, calibration, fault, and correction target."},{"archetype_element":"Participant–role and context binding","domain_realization":"Detachable coded tabs identify the athlete-as-landing-participant, configured footwear, surface module, force plate, impactor-as-calibration-source, and responsible technician without printing personal names."},{"archetype_element":"Event time and record time","domain_realization":"Recorder clock marks and source-local medium order represent occurrence, while separately dated linked slips represent later exclusion, correction, interpretation, or identity adjudication."},{"archetype_element":"Transformation delta and provenance","domain_realization":"The inscribed waveform is direct evidence of load transduced through each plate channel; calibration traces, channel labels, component serials, and operator marks document how that evidence was produced."},{"archetype_element":"Ordering and concurrency semantics","domain_realization":"Roll position establishes recorder-local order, synchronized channel marks establish within-event alignment, and separate lanes preserve simultaneous signals; none is treated as proof of physiological causation."},{"archetype_element":"Correction and supersession","domain_realization":"A numbered annotation slip can exclude, dispute, relabel, or supersede an interpretation while pointing to the unchanged event segment and preserving every earlier knowledge state."},{"archetype_element":"Projection definition","domain_realization":"Each biomechanical result protocol declares event identifiers, calibration correction, baseline, integration window, filtering or manual measurement method, exclusion rules, analysis version, and uncertainty treatment."},{"archetype_element":"Projection frontier and completeness","domain_realization":"The cited roll interval exposes the latest processed event, missing or damaged segments, failed triggers, unprocessed annotations, calibration gaps, and event types outside the recorder's sensitivity."},{"archetype_element":"Replay and reconciliation","domain_realization":"Analysts remeasure identified traces under a pinned protocol and compare regenerated features and validity decisions with the reported table; discrepancies require corrected projections rather than alteration of the roll."},{"archetype_element":"Retention and access","domain_realization":"Rolls use pseudonymous references, locked physical storage, documented checkout, purpose-limited retention, separately protected identity keys, and witnessed secure destruction or governed redaction when required."}],"substrate_contract":{"counterfactual_independence":"If all software, databases, algorithms, dashboards, and digital control are removed, the force plate, analog signal conditioning, trigger, mechanical index, calibration impactor, and oscillographic recorder still detect bounded impacts, inscribe their synchronized waveforms in source-local order, preserve calibration brackets, and permit manual replay. Software can accelerate digitization and comparison but is not the source of the essential measurement or historical trace.","forbidden_channel_audit":"Governance specifies custody and interpretation but does not create the force evidence; training does not substitute for sensing; incentives and organizational process do not produce the preserved waveform. No model decides what physical load occurred, and no database or information-routing layer is required for acquisition. The essential causal channel is mechanical loading transformed by calibrated sensors into an irreversible physical trace.","primary_allowed_process":"MEASUREMENT_INSTRUMENTATION"},"title":"Calibration-Bracketed Landing-Impact Witness Roll","version":0},"schema_version":1}