I would add knowing which numbers to watch, which numbers are unavailable and the related implications, and which questions cannot be answered by numbers. For the latter see indefinite and incommensurable quantities, non-ergodic dynamics, Heisenberg'suncertainty principle, etc.

On the same topic, I have found the concept of Warm data, a type of data we do not collect and, at times, do not even know how to collect. => youtu.be/f8tTax7ad9g?...

Nora Bateson on Warm Data

YouTube video by LetTheCatOut