[
  {
    "segment_type": "Full sample",
    "segment": "All projects",
    "project_count": 406,
    "mean_composite_difficulty": 2.8,
    "p25_composite_difficulty": 2.2,
    "median_composite_difficulty": 2.8,
    "p75_composite_difficulty": 3.2,
    "share_at_or_above_3_5_percent": 17,
    "score_definition": "mean of five editorial 1=easier to 5=harder scores",
    "snapshot_date": "2026-09-22"
  },
  {
    "segment_type": "Evidence class",
    "segment": "Third-party verified",
    "project_count": 57,
    "mean_composite_difficulty": 3.13,
    "p25_composite_difficulty": 2.6,
    "median_composite_difficulty": 3,
    "p75_composite_difficulty": 3.8,
    "share_at_or_above_3_5_percent": 33.3,
    "score_definition": "mean of five editorial 1=easier to 5=harder scores",
    "snapshot_date": "2026-09-22"
  },
  {
    "segment_type": "Evidence class",
    "segment": "Founder-reported",
    "project_count": 184,
    "mean_composite_difficulty": 2.83,
    "p25_composite_difficulty": 2.35,
    "median_composite_difficulty": 2.8,
    "p75_composite_difficulty": 3.25,
    "share_at_or_above_3_5_percent": 18.5,
    "score_definition": "mean of five editorial 1=easier to 5=harder scores",
    "snapshot_date": "2026-09-22"
  },
  {
    "segment_type": "Evidence class",
    "segment": "Creator-relayed",
    "project_count": 121,
    "mean_composite_difficulty": 2.66,
    "p25_composite_difficulty": 2.2,
    "median_composite_difficulty": 2.6,
    "p75_composite_difficulty": 3,
    "share_at_or_above_3_5_percent": 9.1,
    "score_definition": "mean of five editorial 1=easier to 5=harder scores",
    "snapshot_date": "2026-09-22"
  },
  {
    "segment_type": "Evidence class",
    "segment": "Unproven",
    "project_count": 44,
    "mean_composite_difficulty": 2.67,
    "p25_composite_difficulty": 2.2,
    "median_composite_difficulty": 2.5,
    "p75_composite_difficulty": 3.05,
    "share_at_or_above_3_5_percent": 11.4,
    "score_definition": "mean of five editorial 1=easier to 5=harder scores",
    "snapshot_date": "2026-09-22"
  },
  {
    "segment_type": "Editorial tier",
    "segment": "Tier 1",
    "project_count": 90,
    "mean_composite_difficulty": 2.22,
    "p25_composite_difficulty": 2,
    "median_composite_difficulty": 2.2,
    "p75_composite_difficulty": 2.4,
    "share_at_or_above_3_5_percent": 0,
    "score_definition": "mean of five editorial 1=easier to 5=harder scores",
    "snapshot_date": "2026-09-22"
  },
  {
    "segment_type": "Editorial tier",
    "segment": "Tier 2",
    "project_count": 206,
    "mean_composite_difficulty": 2.7,
    "p25_composite_difficulty": 2.2,
    "median_composite_difficulty": 2.6,
    "p75_composite_difficulty": 3,
    "share_at_or_above_3_5_percent": 7.3,
    "score_definition": "mean of five editorial 1=easier to 5=harder scores",
    "snapshot_date": "2026-09-22"
  },
  {
    "segment_type": "Editorial tier",
    "segment": "Tier 3",
    "project_count": 110,
    "mean_composite_difficulty": 3.48,
    "p25_composite_difficulty": 3,
    "median_composite_difficulty": 3.4,
    "p75_composite_difficulty": 3.95,
    "share_at_or_above_3_5_percent": 49.1,
    "score_definition": "mean of five editorial 1=easier to 5=harder scores",
    "snapshot_date": "2026-09-22"
  }
]