{"closest_prior_art":[{"name":"Field Health Systems turf testing and monitoring platform","overlap":"A first-party service combines multi-point GMAX impact testing, rotational-traction testing, infill-depth grids, seam/drainage inspection, zone heatmaps, longitudinal records, degradation alerts, thresholds, and maintenance recommendations—substantially matching the proposed sensing, spatial memory, warning, and response loop.","remaining_difference":"The page does not clearly specify zone-specific baseline distributions, persistence or adjacent-zone contrast rules, blinded defect confirmation, explicit post-maintenance retesting, or formal closure authority.","source_ids":["SRC1"]},{"name":"FIFA Quality Programme testing for football turf","overlap":"Official practice uses laboratory and on-site assessment of safety and performance, including shock absorption, deformation, energy return, and rotational traction under defined certification requirements.","remaining_difference":"Certification-oriented testing does not itself establish the proposal's recurring zone-history model, early-warning logic, targeted repair workflow, and post-repair verification cadence.","source_ids":["SRC2"]},{"name":"Longitudinal spatial testing of a third-generation artificial-turf pitch","overlap":"Primary research measured hardness and infill depth at 91 locations over 13 monthly sessions, found spatial hardness variation exceeding temporal variation, and connected the findings to infill redistribution, decompaction, monitoring, and maintenance optimization.","remaining_difference":"The study did not implement traction-plus-impact staged alerts, accountable operational escalation, or a prospective repair-and-retest decision loop.","source_ids":["SRC3"]},{"name":"Mapped mechanical variability and athlete response on natural and synthetic fields","overlap":"Primary research mapped field hardness, identified localized hard and soft areas, measured rotational resistance plus moisture, thatch, or infill depth, and found within-field mechanical variability associated with athlete loading and perception.","remaining_difference":"It was an observational athlete-response study rather than a recurring deterioration-control system with facility-specific trend thresholds and verified maintenance responses.","source_ids":["SRC4"]}],"contrastive_claim_falsifier":"The narrow remaining claim is falsified if preregistered zone-specific persistence and adjacency rules, blinded inspection, and post-repair verification detect no actionable defect or feasible repair window beyond existing multi-point threshold testing, trend dashboards, routine inspection, and maintenance—or if operator and environmental variability makes those added rules unreliable.","contrastive_claim_remaining":"Beyond established multi-point mechanical testing and commercial trend alerts, the proposal requires a prospective closed loop in which each fixed zone has its own reference distribution, alarms require persistent or corroborated drift or adjacent-zone contrast, material defects are independently confirmed, authorized targeted repairs are applied, and the same zone is retested to verify recovery. The incremental benefit of that specific loop remains falsifiable, but the broader intervention is already substantially represented in prior art.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"Four search lanes covered the direct formulation, historical terminology, standards and commercial practice, and component combinations. Four opened sources span four publishers and include official, first-party, and primary research evidence. The search is adequate for a light screen, although not exhaustive.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"A four-week shadow-mode pilot on one field is bounded and can estimate repeatability, alert yield, blinded defect correspondence, maintenance response, false alarms, missed visible defects, burden, and surface disturbance without changing play decisions.","source_ids":["SRC1","SRC3","SRC4"],"status":"PASS"},"distinct_testable_claim":{"rationale":"The broad monitoring concept collides substantially, but the incremental claim concerning zone-specific baselines, persistence and adjacency logic, blinded physical confirmation, and post-repair recovery testing is operationally distinct and prospectively falsifiable.","source_ids":["SRC1","SRC3","SRC4"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"The proposed shadow-mode, unoccupied-field, non-destructive pilot preserves turf, facility, event-safety, and clinical authority and contains explicit halt and rollback conditions. Research also cautions that mechanical tests do not directly establish injury consequences, consistent with the proposal's prohibition on treating readings as medical predictions.","source_ids":["SRC2","SRC3"],"status":"PASS"},"supported_problem":{"rationale":"Longitudinal and mapped studies directly demonstrate localized and temporal variation in hardness, traction-related properties, moisture, thatch, and infill; the commercial service is explicitly designed to identify high-risk zones and degradation before incidents or emergency repair.","source_ids":["SRC1","SRC3","SRC4"],"status":"PASS"}},"prior_art_disposition":"SUBSTANTIAL_COLLISION","problem_evidence":{"finding":"The problem is visible: sports fields can exhibit consequential within-field mechanical variation associated with usage, infill condition, moisture, construction, and maintenance. Spatial hardness differences may exceed temporal differences, field averages can obscure localized conditions, and harder areas have been associated with greater measured athlete loading. Evidence supports monitoring the physical surface, but does not validate any reading as a prediction of a particular injury.","source_ids":["SRC1","SRC3","SRC4"],"status":"SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P020","screen_survival":false,"search_lanes":{"component_combination":{"no_result_note":null,"queries":["sports field spatial grid rotational traction impact attenuation monitoring maintenance retest","sports turf spatial performance testing repeated monitoring maintenance response study traction hardness field zones","\"spatial variability\" \"rotational resistance\" turfgrass field maintenance"],"source_ids":["SRC1","SRC3","SRC4"]},"direct_problem_and_intervention":{"no_result_note":null,"queries":["sports field spatial grid rotational traction impact attenuation monitoring maintenance retest","playing surface performance testing ongoing monitoring traction shock absorption artificial turf maintenance FIFA"],"source_ids":["SRC1","SRC2"]},"products_practices_and_standards":{"no_result_note":null,"queries":["site:fieldhealthsystems.com zone-by-zone heat map rotational traction infill depth maintenance retest","site:fifa.com football turf field test positions maintenance retest annual certification shock absorption rotational resistance","sports turf standards field testing traction impact attenuation ASTM maintenance"],"source_ids":["SRC1","SRC2"]},"synonyms_and_historical_terms":{"no_result_note":null,"queries":["natural turf performance quality monitoring spatial variability traction hardness compaction","\"Spatial and temporal analysis of surface hardness\" DOI","performance testing sports fields traction hardness maintenance monitoring"],"source_ids":["SRC3","SRC4"]}},"sources":[{"claims_supported":["Commercial prior art combines GMAX, rotational traction, infill-depth grids, physical inspection, zone heatmaps, longitudinal tracking, thresholds, alerts, and maintenance recommendations.","The service tests high-use zones and represents its system as detecting degradation early."],"publisher":"Field Health Systems","source_id":"SRC1","source_type":"FIRST_PARTY_PRODUCT","title":"Artificial Turf Field Maintenance & Testing | Professional Sports Field Analytics","url":"https://www.fieldhealthsystems.com/services/turf-testing"},{"claims_supported":["FIFA uses on-site and laboratory testing to evaluate football-turf safety, durability, and performance.","Official test methods include shock absorption, deformation, energy return, and rotational traction.","FIFA states that impact testing does not directly assess head injuries."],"publisher":"FIFA","source_id":"SRC2","source_type":"OFFICIAL_STANDARD","title":"New edition of FIFA Test Manual for Football Turf released","url":"https://inside.fifa.com/innovation/standards/football-turf/new-edition-of-fifa-test-manual"},{"claims_supported":["A 13-month study measured surface hardness and infill depth at 91 pitch locations.","Spatial hardness variation exceeded temporal variation and was associated with shockpad thickness and infill depth.","The authors connect spatial monitoring to infill redistribution, decompaction, and maintenance while cautioning against direct safety inference."],"publisher":"SAGE Publications","source_id":"SRC3","source_type":"PRIMARY_RESEARCH","title":"Spatial and temporal analysis of surface hardness across a third-generation artificial turf pitch over a year","url":"https://journals.sagepub.com/doi/10.1177/1754337114523756"},{"claims_supported":["Mapped hardness varied significantly within and between natural and synthetic fields.","The study measured rotational resistance with moisture and thatch on natural turf and infill depth on synthetic turf.","Localized harder synthetic areas were associated with higher athlete impact-loading classifications, while the authors retained uncertainty about injury implications."],"publisher":"Frontiers","source_id":"SRC4","source_type":"PRIMARY_RESEARCH","title":"Within- and between-field variability in natural turfgrass and synthetic turf is associated with differences in athlete mechanical loading and perception","url":"https://www.frontiersin.org/journals/sports-and-active-living/articles/10.3389/fspor.2026.1876412/full"}],"world_novelty_boundary":"This bounded public-web screen found substantial collision with commercial monitoring, official mechanical testing, and spatial or longitudinal research. It cannot establish world novelty, patentability, market size, expert acceptance, or realized value; unsearched patents, procurement systems, internal league protocols, local facility practices, and non-indexed products may contain still closer prior art."}