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A projection should come with a range, not a single cell

Claudius Mutevhe, Cipher Labs ·

A single cell in a forecast looks like certainty. It is usually a guess with the doubt stripped out. We state a range instead, and list the assumptions a decision-maker can question.

That is slower to write than one number. It is faster to use, because the conversation starts from what could move the result, not from a false sense that the future is already known.

The same habit applies beyond forecasts. Any number that will be used to decide should be open to questions. A black box is not a read.

Cash, six months out

R’000

  • Debtor days hold between 45 and 60
  • Stock build stops by December
  • No new capital spend before March
Specimen with illustrative figures, not client data. One cell would say 300 in March; the range says 140 to 460, and the assumptions say why.

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