NOT.1:2 - Problem

How can a notation designer determine what the notation needs to make possible before committing to its symbols and rules?

A list of concepts leaves the work underdetermined. The same concepts can enter different compositions, questions and changes. A notation sufficient for recognizing an object may be insufficient for constructing it; a description sufficient for one question may discard what another question needs. Designing from familiar examples alone can conceal these differences until somebody tries a new case.