Misconception · MIS:model-input-provenance-shortcut

Mistaken idea “A spreadsheet cell reference proves an input source”

Mistaken reasoning: The mistake treats an internal cell address as provenance even when the upstream value, unit, owner, or version is unknown.

Updated Sep 11, 2026 Review due Nov 8, 2026

Why this is mistaken

Trace every material input to a retained source exhibit or a clearly labeled supplied assumption. Use the same input map for workbook and code views. A correct formula with the wrong period or unit gives a precise wrong result.

Where to watch

When this mistake may appear

  • The input comes from cell Inputs!B17.
Check your work

Your work may contain this mistake if:

  • Cannot trace a material input to a retained exhibit with its period, currency, units, transformation, and state.