{
  "slug": "why-the-spreadsheet-changed-planning",
  "version": 1,
  "layout": "comparison",
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      "id": "n1",
      "type": "ledger",
      "label": "Paper Ledger",
      "x": 54,
      "y": 94,
      "w": 155,
      "h": 155,
      "detail": "manual recalc"
    },
    {
      "id": "n2",
      "type": "divider",
      "label": "→",
      "x": 273,
      "y": 114,
      "w": 24,
      "h": 140
    },
    {
      "id": "n3",
      "type": "calculator",
      "label": "Digital Grid",
      "x": 322,
      "y": 98,
      "w": 155,
      "h": 155,
      "detail": "formula cells"
    },
    {
      "id": "n4",
      "type": "graph",
      "label": "What-If Model",
      "x": 332,
      "y": 277,
      "w": 78,
      "h": 78,
      "detail": "instant recalc"
    }
  ],
  "relationships": [
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      "from": "n1",
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      "label": "replaced by"
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      "from": "n3",
      "to": "n4",
      "label": "enables"
    }
  ],
  "summary": "A formula-linked grid recalculates every dependent cell the moment one value changes, enabling instant what-if.",
  "mechanism": "formula-dependency-instant-recalculation",
  "fig": "FIG. / THE WHAT-IF MACHINE THAT MOVED PLANNING TO THE DESK",
  "animation": {
    "style": "reveal",
    "duration": 600,
    "stagger": 60
  },
  "presentation": {
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    "hero": "n1",
    "support": [
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      "n4"
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    "icon": "ledger",
    "label": "Paper Ledger",
    "tilt": 0
  },
  "illustration": {
    "concept": "Spreadsheet grid with column and row headers; formula cascade linking three cells left to right; one scenario cell pulses as the what-if variable",
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