{
  "synthetic": true,
  "assignment": "Randomized invitation at account level is stipulated for the teaching analysis; rows are constructed, not collected from an experiment.",
  "commission_rate": 0.1,
  "incremental_onboarding_per_invited_win": 500,
  "setup_cost": 4000,
  "followup_days": 60,
  "maturity": "Both arms fully observed for 60 days. No spillover is assumed.",
  "test": "Two-sided fixed-margin permutation/Fisher test, summing tables with probability no greater than the observed table."
}