C16 · Reference edition 2026.11
Temporal notes — Definition and boundaries
An impression can change during an observation. Record onset, development and persistence as separate descriptions where useful.
Scope and purpose
Start by separating the named concept from adjacent concepts. Use the observation below to identify the question the record is intended to answer. Read the caution before applying the example. A definition is useful only when another reader can tell what falls outside it.
Working notes
This atlas connects descriptive vocabulary, observation context and reference-sheet design. All example records are synthetic and exist to explain a method of documentation; they do not represent tested batches, product ratings or scientific results. The diagrams are original editorial graphics. Descriptions of perceived character are kept separate from ingredient, origin, health and certification claims. Read definitions and scale anchors before comparing records.
Practical example
Use a three-stage timeline rather than a single unexplained duration value.
| Reference record | Interpretation |
|---|---|
| C16 | Temporal notes |
| Scope and purpose | An impression can change during an observation. Record onset, development and persistence as separate descriptions where useful. |
| Limits and interpretation | Illustrative timelines are not measured release curves. |
Review checklist
Write a one-sentence scope statement; identify a neighbouring concept; record what the example does not establish.