{
  "$schema": "./question-pack-v2.schema.json",
  "format": "math-drill-question-pack",
  "schemaVersion": 2,
  "kind": "case_practice",
  "id": "example-harborfresh-case-practice",
  "packVersion": "1.0",
  "title": "Example HarborFresh Case Practice",
  "description": "Original synthetic exercises for a fictional local meal-kit company.",
  "publisher": "Example Learning Lab",
  "license": "CC BY 4.0",
  "structuringPrompts": [
    {
      "id": "harborfresh-margin-structure",
      "title": "Diagnose a margin decline",
      "industry": "Meal kits",
      "situation": "HarborFresh grew orders this year, but operating margin fell from 12% to 7%.",
      "objective": "Identify the drivers of the margin decline and the highest-value corrective action.",
      "hypotheses": [
        {
          "id": "cost-growth",
          "label": "Fulfillment and ingredient costs grew faster than revenue.",
          "rationale": "The hypothesis links the margin decline to measurable revenue and cost drivers."
        },
        {
          "id": "demand-collapse",
          "label": "Customer demand collapsed across every plan.",
          "rationale": "Total orders increased, so a broad demand collapse is inconsistent with the known fact."
        }
      ],
      "acceptedHypothesisId": "cost-growth",
      "branchOptions": [
        {
          "id": "revenue-mix",
          "label": "Revenue and mix",
          "description": "Review order volume, prices, discounts, and plan mix."
        },
        {
          "id": "cost-base",
          "label": "Cost base",
          "description": "Review ingredient, packaging, labor, delivery, and fixed costs."
        }
      ],
      "maxBranches": 2,
      "modelStructure": [
        {
          "branchId": "revenue-mix",
          "title": "Revenue and mix",
          "questions": ["Did discounts or plan mix reduce revenue per order?"]
        },
        {
          "branchId": "cost-base",
          "title": "Cost base",
          "questions": ["Which unit costs grew faster than order volume?"]
        }
      ]
    }
  ],
  "brainstormingPrompts": [
    {
      "id": "harborfresh-retention-ideas",
      "title": "Improve subscriber retention",
      "context": "First-month cancellations rose after HarborFresh changed its menu and delivery windows.",
      "question": "Which actions should the team test first to improve retention?",
      "selectionLimit": 2,
      "priorityLimit": 1,
      "priorityIdeaIds": ["pause-point-offer"],
      "themes": [
        {
          "id": "customer-choice",
          "label": "Customer choice",
          "ideas": [
            {
              "id": "pause-point-offer",
              "label": "Offer pause and delivery-window choices before cancellation.",
              "relevant": true
            },
            {
              "id": "remove-preferences",
              "label": "Remove dietary preferences from account settings.",
              "relevant": false
            }
          ]
        },
        {
          "id": "service-learning",
          "label": "Service learning",
          "ideas": [
            {
              "id": "cancel-reason-test",
              "label": "Track cancellation reasons by menu and delivery window.",
              "relevant": true
            },
            {
              "id": "annual-survey-only",
              "label": "Wait for one annual survey before changing service.",
              "relevant": false
            }
          ]
        }
      ]
    }
  ],
  "synthesisPrompts": [
    {
      "id": "harborfresh-kitchen-synthesis",
      "title": "Recommend a kitchen expansion",
      "client": "HarborFresh",
      "situation": "The current kitchen is near capacity, while demand differs sharply by neighborhood.",
      "decision": "Recommend whether HarborFresh should lease a second kitchen this quarter.",
      "facts": [
        "The east neighborhood has enough committed demand to use 80% of a small kitchen.",
        "A six-month lease option costs 20% more per month but limits long-term downside."
      ],
      "options": {
        "recommendation": [
          {
            "id": "short-lease",
            "label": "Use the six-month option for a small east kitchen."
          },
          {
            "id": "large-long-lease",
            "label": "Sign a five-year lease for a large citywide kitchen."
          }
        ],
        "evidence": [
          {
            "id": "committed-utilization",
            "label": "Committed east demand supports 80% utilization."
          },
          {
            "id": "office-location",
            "label": "The finance office is also in the east neighborhood."
          }
        ],
        "risk": [
          {
            "id": "demand-decay",
            "label": "Committed demand may weaken after launch."
          },
          {
            "id": "paint-color",
            "label": "The kitchen exterior may need a different paint color."
          }
        ],
        "nextStep": [
          {
            "id": "verify-and-negotiate",
            "label": "Verify commitments and negotiate volume gates before signing."
          },
          {
            "id": "sign-immediately",
            "label": "Sign the long lease before checking customer commitments."
          }
        ]
      },
      "correctResponse": {
        "recommendation": "short-lease",
        "evidence": "committed-utilization",
        "risk": "demand-decay",
        "nextStep": "verify-and-negotiate"
      },
      "modelClose": "HarborFresh should use the six-month option for a small east kitchen because committed demand supports 80% utilization. The main risk is demand decay, so the team should verify commitments and negotiate volume gates before signing."
    }
  ],
  "lessons": [
    {
      "id": "harborfresh-contribution-lesson",
      "knowledgeCheck": {
        "correctOptionId": "six-dollars",
        "explanation": "Contribution per box equals $18 minus $12, or $6.",
        "options": [
          {
            "id": "six-dollars",
            "label": "$6 per box"
          },
          {
            "id": "thirty-dollars",
            "label": "$30 per box"
          }
        ],
        "prompt": "A box sells for $18 and has $12 of variable cost. What is contribution per box?"
      },
      "objective": "Connect price and variable cost to contribution per unit.",
      "principles": [
        "Contribution per unit equals price minus variable cost per unit.",
        "Use contribution, not revenue, to cover fixed costs."
      ],
      "title": "Calculate contribution per unit",
      "topic": "business_economics",
      "workedExample": {
        "answer": "Contribution is $8 per box.",
        "prompt": "A box sells for $20 and has $12 of variable cost.",
        "steps": ["Subtract $12 of variable cost from the $20 price."]
      }
    }
  ],
  "fitPrompts": [
    {
      "id": "harborfresh-impact-fit",
      "competency": "impact",
      "prompt": "Tell me about a time you improved an important operating result.",
      "followUps": [
        "How did you identify the opportunity?",
        "How did you measure the result?"
      ]
    }
  ],
  "fullCases": [
    {
      "id": "harborfresh-pickup-full-case",
      "client": "HarborFresh",
      "title": "Neighborhood pickup rollout",
      "situation": "HarborFresh tested pickup points in two neighborhoods and must decide where to expand next quarter.",
      "calculationQuestionId": "east-weekly-contribution",
      "structure": {
        "id": "harborfresh-pickup-structure",
        "title": "Structure the pickup decision",
        "industry": "Meal kits",
        "situation": "Pickup adoption and unit economics differ between the east and west pilots.",
        "objective": "Determine whether and where to expand neighborhood pickup.",
        "hypotheses": [
          {
            "id": "east-first",
            "label": "Expand east first if contribution and repeat demand remain attractive.",
            "rationale": "This is a market-specific hypothesis tied to measurable economics and demand."
          },
          {
            "id": "expand-both",
            "label": "Expand both neighborhoods because each pilot attracted some users.",
            "rationale": "Any adoption is not enough to establish attractive economics."
          }
        ],
        "acceptedHypothesisId": "east-first",
        "branchOptions": [
          {
            "id": "pickup-demand",
            "label": "Demand",
            "description": "Assess adoption, repeat use, and addressable order volume."
          },
          {
            "id": "pickup-economics",
            "label": "Economics",
            "description": "Assess contribution, setup costs, and break-even volume."
          }
        ],
        "maxBranches": 2,
        "modelStructure": [
          {
            "branchId": "pickup-demand",
            "title": "Demand",
            "questions": ["Which neighborhood has durable pickup adoption?"]
          },
          {
            "branchId": "pickup-economics",
            "title": "Economics",
            "questions": ["Which pilot generates enough contribution to cover setup costs?"]
          }
        ]
      },
      "exhibit": {
        "id": "harborfresh-pickup-exhibit",
        "title": "Pickup pilot performance",
        "description": "Average weekly results from the final month of each pilot.",
        "sourceNote": "Original synthetic practice data.",
        "unit": "none",
        "columns": [
          {
            "id": "neighborhood",
            "label": "Neighborhood",
            "role": "dimension",
            "valueType": "text"
          },
          {
            "id": "eligible-orders",
            "label": "Eligible weekly orders",
            "role": "metric",
            "unit": "units",
            "valueType": "number"
          },
          {
            "id": "adoption",
            "label": "Pickup adoption",
            "role": "metric",
            "unit": "percentage",
            "valueType": "percentage"
          },
          {
            "id": "contribution",
            "label": "Contribution per pickup order",
            "role": "metric",
            "unit": "currency",
            "valueType": "currency"
          }
        ],
        "rows": [
          {
            "id": "east",
            "label": "East",
            "cells": {
              "neighborhood": "East",
              "eligible-orders": 6000,
              "adoption": 0.25,
              "contribution": 8
            }
          },
          {
            "id": "west",
            "label": "West",
            "cells": {
              "neighborhood": "West",
              "eligible-orders": 5000,
              "adoption": 0.12,
              "contribution": 5
            }
          }
        ],
        "visualization": {
          "type": "table",
          "title": "HarborFresh pickup performance",
          "selectedColumnIds": [
            "neighborhood",
            "eligible-orders",
            "adoption",
            "contribution"
          ]
        },
        "questions": [
          {
            "id": "east-weekly-contribution",
            "difficulty": "intermediate",
            "prompt": "What weekly contribution does the east pickup pilot generate?",
            "tags": ["multiplication", "contribution_margin"],
            "answer": {
              "value": 12000,
              "unit": "currency"
            },
            "explanation": {
              "short": "Multiply eligible orders by adoption and contribution per pickup order.",
              "steps": [
                "Adopted orders are 6,000 x 25% = 1,500.",
                "Weekly contribution is 1,500 x $8 = $12,000."
              ]
            },
            "expectedTimeSeconds": 90
          }
        ]
      },
      "brainstorming": {
        "id": "harborfresh-pickup-actions",
        "title": "Improve pickup performance",
        "context": "HarborFresh can run two tests before the next rollout decision.",
        "question": "Which actions should HarborFresh test to improve demand and economics?",
        "selectionLimit": 2,
        "priorityLimit": 1,
        "priorityIdeaIds": ["target-east-cohorts"],
        "themes": [
          {
            "id": "pickup-growth",
            "label": "Demand",
            "ideas": [
              {
                "id": "target-east-cohorts",
                "label": "Target east customers with high repeat meal-kit use.",
                "relevant": true
              },
              {
                "id": "citywide-launch",
                "label": "Launch pickup citywide before another test.",
                "relevant": false
              }
            ]
          },
          {
            "id": "pickup-cost",
            "label": "Economics",
            "ideas": [
              {
                "id": "shared-hosts",
                "label": "Test pickup hosts that use existing staffed counters.",
                "relevant": true
              },
              {
                "id": "custom-buildings",
                "label": "Build dedicated pickup buildings in every neighborhood.",
                "relevant": false
              }
            ]
          }
        ]
      },
      "synthesis": {
        "id": "harborfresh-pickup-synthesis",
        "title": "Recommend a pickup rollout",
        "client": "HarborFresh",
        "situation": "East produces stronger adoption and contribution than west.",
        "decision": "Recommend the next pickup rollout step.",
        "facts": [
          "East generates $12,000 of weekly contribution.",
          "West generates $3,000 of weekly contribution."
        ],
        "options": {
          "recommendation": [
            {
              "id": "expand-east",
              "label": "Expand east selectively and hold west."
            },
            {
              "id": "expand-everywhere",
              "label": "Expand every neighborhood immediately."
            }
          ],
          "evidence": [
            {
              "id": "east-contribution",
              "label": "East produces four times west's weekly contribution."
            },
            {
              "id": "same-brand",
              "label": "Both pilots use the HarborFresh brand."
            }
          ],
          "risk": [
            {
              "id": "repeat-demand",
              "label": "East adoption may not persist after the pilot offer ends."
            },
            {
              "id": "office-move",
              "label": "HarborFresh may move its accounting office."
            }
          ],
          "nextStep": [
            {
              "id": "retention-test",
              "label": "Run a four-week east retention test before adding sites."
            },
            {
              "id": "long-leases",
              "label": "Sign long leases across the city immediately."
            }
          ]
        },
        "correctResponse": {
          "recommendation": "expand-east",
          "evidence": "east-contribution",
          "risk": "repeat-demand",
          "nextStep": "retention-test"
        },
        "modelClose": "HarborFresh should expand pickup selectively in east and hold west because east produces four times the weekly contribution. The main risk is whether demand persists, so the next step is a four-week east retention test."
      }
    }
  ]
}