C39 · Reference edition 2026.11
Comparison order — Recording and revision
Order can affect an observer’s reference point. A comparison record should preserve the actual sequence and the intended comparison question.
Scope and purpose
A reference record should allow another reader to reconstruct the intended description. Keep the identifier, context and revision together. When information changes, explain the change and retain enough of the earlier description to understand what was superseded.
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
Display the sequence beside the notes rather than rearranging samples after observation.
| Reference record | Interpretation |
|---|---|
| C39 | Comparison order |
| Scope and purpose | Order can affect an observer’s reference point. A comparison record should preserve the actual sequence and the intended comparison question. |
| Limits and interpretation | A single sequence cannot establish that order effects were controlled. |
Review checklist
Check the identifier; describe the observation and its source; date the revision; link affected figures; distinguish confirmed facts from open questions.