{
  "problem": {
    "return_uncertainty_interviews": 3,
    "interviews": 5,
    "distinct_workaround_types": 3,
    "contact_rate": 0.6,
    "repeat_visit_rate": 0.4,
    "passes_supplied_gate": true,
    "independence": "Assumed by supplied gate; recruitment independence not documented"
  },
  "solution": {
    "comprehension": 0.8,
    "under_two_minutes": 0.8,
    "submission": 0.4,
    "passes_supplied_gate": false,
    "task_mean_seconds": 113,
    "task_median_seconds": 105,
    "task_range_seconds": [
      70,
      180
    ]
  },
  "return_example": {
    "elapsed_days": 14,
    "within_30_days": true,
    "approval": "pending merchant review; unopened is a screening signal, not verified unused status"
  },
  "shipping_example": {
    "two_mugs_total": 48,
    "shortfall_to_free_shipping": 2
  },
  "assumptions": [
    {
      "assumption": "Users submit eligible requests after reading a preview",
      "category": "desirability",
      "risk": "0.9",
      "certainty": "0.2",
      "priority_score": 0.72
    },
    {
      "assumption": "Saved handling time justifies operations cost",
      "category": "viability",
      "risk": "0.8",
      "certainty": "0.3",
      "priority_score": 0.56
    },
    {
      "assumption": "Mia can route requests without automatic refunds",
      "category": "feasibility",
      "risk": "0.7",
      "certainty": "0.6",
      "priority_score": 0.28
    },
    {
      "assumption": "Customers distinguish eligibility from refund approval",
      "category": "usability",
      "risk": "0.9",
      "certainty": "0.4",
      "priority_score": 0.54
    }
  ],
  "economics": {
    "formula": "net weekly benefit = N * (t0 - t1) / 60 * hourly_loaded_cost - weekly_tool_cost - weekly_incremental_error_cost",
    "break_even_minutes_saved_per_request": "60 * (weekly_tool_cost + weekly_incremental_error_cost) / (N * hourly_loaded_cost)",
    "inputs_missing": [
      "eligible weekly return requests N",
      "baseline and new total handling minutes t0,t1 including rework",
      "loaded hourly cost",
      "tool cost",
      "incremental error cost"
    ],
    "observed_weekly_refunds_to_gross": [
      0.05,
      0.05
    ]
  }
}