THE VITAL CROSSOVER WORKBOOKSUPPORTING RECORD · EVIDENCE
Keep a Source Beside Every Important Number
Prevent one unsupported figure from carrying a decision merely because the surrounding record appears precise.
For each number carrying the conclusion, record the amount, source, date, owner, status, and what could make it change. Add more rows on a separate copy when needed.
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Mark each material number in the relevant worksheet as confirmed, ranged, estimated, or unresolved.