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The model must answer before the future arrives
Historical records contain knowledge accumulated after a decision. A prototype must be tested using only what could have been known when its proposed answer was needed.
Read the essayLeela Marvethi / Chief Data Officer
Before a number becomes an explanation
Perspectives from a life in leadership.
The archive.
Prediction timing and analytical evidence
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The model must answer before the future arrives
Historical records contain knowledge accumulated after a decision. A prototype must be tested using only what could have been known when its proposed answer was needed.
Historical coverage and reporting meaning
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An empty historical field is not a zero waiting to happen
A complete row count can coexist with incomplete observations. Reporting should preserve the difference between an observed absence and a history the source never supplied.
Analytical access and small-group disclosure
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An aggregate can still point to a person
Removing names does not settle the suitability of a dashboard. Its filters, audience and surrounding knowledge can make a small group unexpectedly revealing.