# Tomás's Governance Dashboard — Chapter 5 Worked Example

> The fifteen-visual dense governance dashboard Tomás built on Friday afternoon and the seven-visual rebuild he shipped to the audit committee, from Chapter 5 of *The Defensible Decision*. Every visual’s keep/remove verdict and its reason live in this dataset.

**Wholly synthetic.** Any resemblance to a specific real data-governance dashboard is coincidental; the fifteen-to-seven pattern is drawn from the recurring dashboard-density failure mode Chapter 5 catalogues.

## Files

- [`tomas-governance.csv`](tomas-governance.csv) — flat rows: one per Page-1 visual with kind, content, verdict, and reason
- [`tomas-governance.json`](tomas-governance.json) — canonical scenario contract with source hash

## What it represents

The Page-1 visual inventory Tomás built (fifteen visuals) plus the keep/remove verdict for each after running the decluttering discipline. Each verdict carries a specific reason. Five visuals are kept from the original fifteen; ten are removed. The rebuild adds a page-header treatment of the Big Idea and promotes one drill-down from the archive, for a total of seven visuals shipped.

## Invariants (locked)

The scenario carries executable invariants that Chapter 5’s release contract enforces:

- Exactly 15 visuals in the before-inventory with ids 1–15 and no gaps.
- Every visual carries a non-empty `reason`.
- Verdicts are drawn from exactly two values: `keep` or `remove`.
- Chart-family diversity in the kept set (at least 4 distinct families) — the rebuild is not a monoculture.
- The core funding-decision bar chart (id 14) IS kept.
- After-summary declares 7 visuals, 4 core, 3 load-bearing supporting, and page-header carries the Big Idea.

## Why the invariants matter

Chapter 5’s pedagogical point is that removal directs attention. If the before-inventory shrank to 8, the decluttering pressure would soften. If the kept set collapsed to a monoculture (only bar charts), the rebuild would look like a chart-family swap rather than a decluttering pass. If the funding-decision chart got removed, the scenario would lose its anchor. The invariants keep the story pedagogically stable.

## What it does NOT represent

- A specific real governance program’s dashboard.
- The audit committee’s specific funding decision (the chapter frames the meeting as successful in the composite sense; the actual numbers are illustrative).
- The full drill-down content (the dataset carries visual-level metadata; the drill-down details live on the archive page in the chapter’s worked example).

## Reproducibility

The dataset ships from the book source at `AlexBooks/applied-ai/ai-directed-viz/data/tomas-governance.json` and is re-emitted here by `AlexBooks/applied-ai/ai-directed-viz/scripts/generate-tomas-governance.mjs --site-root <site-root>`.

## License

Released for teaching use alongside *The Defensible Decision*. Use freely.