{"closest_prior_art":[{"name":"World Rugby laboratory-to-field turf certification and identification process","overlap":"Requires a declared turf product to pass laboratory testing before installation, uses independent accredited test institutes and technicians, tests the installed field, and performs identification testing to verify that field materials match the laboratory-tested product.","remaining_difference":"It does not disclose a pre-procurement discovery matrix with familywise error control, an at-most-one frozen nominee, presealed matched confirmation twins, physical witness marks for every attempted comparison, or nominee-only opening before installation.","source_ids":["SRC2"]},{"name":"FIFA Quality Programme for Football Turf","overlap":"Treats performance, safety, durability, quality assurance, product compliance, and a specific on-site performance test as prerequisites for regarding artificial turf as suitable.","remaining_difference":"The cited guidance does not inventory a flexible exploratory opportunity set or combine multiplicity adjustment with physically sequestered confirmation coupons and a frozen nominee.","source_ids":["SRC1"]},{"name":"Controlled multi-factor mechanical traction research","overlap":"Tests multiple prepared surface systems and states, recognizes footwear, surface, environment, loading, infill, and apparatus as influential variables, and uses standardized preparation, repeated trials, randomization, and mechanical traction and impact measurements.","remaining_difference":"These studies characterize effects and measurement variability; they do not provide a procurement claim-control system coupling familywise screening, tamper-evident specimen accounting, and untouched nominee confirmation.","source_ids":["SRC3","SRC4"]}],"contrastive_claim_falsifier":"The claim would be falsified if repeated blinded known-null trials showed no reduction in false-winner promotion relative to the existing workflow, or if seal, mass-balance, witness-mark, and reconstruction checks could not reliably distinguish confirmation material from tested, omitted, repeated, or substituted material.","contrastive_claim_remaining":"Compared with standardized testing and existing staged turf certification, prospectively coupling a complete physical opportunity-set inventory and familywise discovery threshold to a single frozen nominee tested on independently opened, presealed material twins will reduce promotion of chance-selected turf–infill–stud winners before procurement.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"The bounded search covered the exact title and intervention language, holdout/reserve/retained-sample terminology, FIFA, World Rugby, and ASTM practices, and combinations involving traction rigs, infill, studs, conditions, repeatability, and independent testing. Four opened sources from four publishers were retained; no direct disclosure of the complete proposed combination was found.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"A single surplus-material, bench-only known-null run can boundedly test cassette fabrication, seal and mass accounting, specimen comparability, rig repeatability, witness-mark completeness, reconstruction, and technician time without athlete or purchasing exposure. It can expose operational failure but cannot by itself estimate the false-promotion rate precisely; that would require subsequent repeated null trials.","source_ids":["SRC2","SRC3","SRC4"],"status":"PASS"},"distinct_testable_claim":{"rationale":"The remaining claim is distinct from standardized or staged certification because it combines physical enumeration of all discovery looks, a familywise threshold, one frozen nominee, and fresh presealed material confirmation. False-promotion frequency and chain-of-custody reconstruction are measurable against the current workflow.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"The proposed first run is bench-only, excludes athletes and procurement decisions, preserves the equipment-safety lead's claim authority, and includes stops for damaged guards, broken seals, unblinding, and irreconstructible tests. Existing governing-body certification and accredited-testing requirements remain applicable and are not displaced.","source_ids":["SRC1","SRC2"],"status":"PASS"},"supported_problem":{"rationale":"Primary research shows that traction depends on numerous shoe, surface, infill, environmental, loading, apparatus, and operator factors and that surfaces can change during repeated testing. This makes a broad search capable of producing unstable extremes. The retained sources do not directly document the asserted procurement practice of cherry-picking an unadjusted winner, so support is partial rather than complete.","source_ids":["SRC3","SRC4"],"status":"PASS"}},"prior_art_disposition":"ADJACENT_PRIOR_ART","problem_evidence":{"finding":"The mechanical preconditions for selection bias are visible: many consequential configuration and method variables exist, localized turf variability contributes measurement variation, manual devices can differ systematically, and specimens change during repeated preparation and testing. Existing FIFA and World Rugby processes already address product qualification, independent testing, material identity, and later field confirmation, but the retained evidence does not show whether facilities commonly promote the best result from an undisclosed matrix without multiplicity control.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PARTLY_SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P048","screen_survival":true,"search_lanes":{"component_combination":{"no_result_note":"The sources disclosed controlled multi-system testing, repeatability controls, independent qualification, laboratory-to-field staging, and material identification, but not their combination with a sealed discovery/confirmation bank and familywise nominee selection.","queries":["artificial turf stud traction multiple conditions footwear surface traction reliability study","Science of synthetic turf surfaces investigating traction behaviour","Understanding variability rotational traction testing artificial turf","synthetic turf product testing independent laboratory sample confirmation certification FIFA"],"source_ids":["SRC2","SRC3","SRC4"]},"direct_problem_and_intervention":{"no_result_note":"No retained result disclosed the exact title or the complete combination of coordinate-indexed twin banks, irreversible witness marks, familywise screening, frozen nominee, and nominee-only confirmation opening.","queries":["\"Sealed Twin-Bank Surface-Stud Test Cassettes\"","\"discovery cassette\" \"confirmation cassette\" turf stud traction","artificial turf traction \"holdout\" confirmation samples multiplicity","sports surface testing preregistration multiple comparisons sealed specimens"],"source_ids":[]},"products_practices_and_standards":{"no_result_note":null,"queries":["site:inside.fifa.com technical test methods football turf rotational resistance shock absorption laboratory field tests PDF","ASTM artificial turf traction impact attenuation standard rotational resistance","Rugby Turf performance specification accredited test institute laboratory field testing","FIFA Quality Programme artificial turf on-site performance test procurement"],"source_ids":["SRC1","SRC2"]},"synonyms_and_historical_terms":{"no_result_note":"Searches for retained, reserve, sealed, split, and confirmation samples found adjacent certification and independent-testing practices, but no sports-surface analogue of the proposed physically sequestered holdout bank.","queries":["\"football turf\" \"retain samples\" testing laboratory FIFA","artificial turf \"sealed samples\" laboratory testing certification","sports surface test \"reserve sample\" traction","synthetic turf product testing independent laboratory sample confirmation certification FIFA"],"source_ids":["SRC1","SRC2"]}},"sources":[{"claims_supported":["FIFA regards only Quality Programme-compliant artificial-turf products as suitable.","The programme addresses playing performance, safety, durability, and quality assurance and requires a specific on-site performance test for each installation."],"publisher":"FIFA","source_id":"SRC1","source_type":"OFFICIAL_GUIDANCE","title":"2.4 Turf and Pitch Design","url":"https://publications.fifa.com/fr/football-stadiums-guidelines/general-process-guidelines/design/turf-and-pitch-design/"},{"claims_supported":["Products must be laboratory-tested before installation and compliance testing is restricted to accredited, independent test institutes and technicians.","Laboratory and on-site identification testing checks that the installed product is the one tested in the laboratory.","The process includes field testing, periodic retesting, documentation, equipment calibration, and remediation of identified field hazards."],"publisher":"World Rugby","source_id":"SRC2","source_type":"OFFICIAL_STANDARD","title":"Rugby Turf performance","url":"https://www.world.rugby/the-game/facilities-equipment/surfaces/performance-specification?lang=fr"},{"claims_supported":["Traction depends on sport movement, footwear, playing surface, and environment.","Carpet properties, infill state, stud size and configuration, normal load, and mechanical-test design influence measured traction.","The literature's varied methodologies impede direct comparison, and more robust testing was recommended."],"publisher":"SAGE Publications","source_id":"SRC3","source_type":"PRIMARY_RESEARCH","title":"Science of synthetic turf surfaces: investigating traction behaviour","url":"https://journals.sagepub.com/doi/10.1177/1754337111408980"},{"claims_supported":["A controlled study compared three traction devices, four artificial-turf systems, multiple trained operators, randomized surface order, repeated trials, and standardized preparation.","Surfaces changed during testing; localized turf conditions were the main variability contributor; and significant device bias and lower variability for automation were observed.","The study used pre/post rotational traction, shock absorption, and vertical-deformation measurements, supporting a bounded rig-repeatability and specimen-stability pilot."],"publisher":"Springer Nature","source_id":"SRC4","source_type":"PRIMARY_RESEARCH","title":"Understanding the variability in rotational traction testing on artificial turf","url":"https://link.springer.com/article/10.1007/s12283-023-00426-4"}],"world_novelty_boundary":"This bounded public-web screen found adjacent governing-body certification and controlled mechanical-testing practices but no complete match in the retained evidence. It cannot establish world novelty, patentability, freedom to operate, market size, expert acceptance, or realized safety or procurement value; unindexed patents, paywalled standards, proprietary laboratory procedures, and local procurement records may contain closer art."}