A useful starting point
Use two columns: what you saw and what you think it might mean. The first should contain concrete descriptions; the second can hold questions for later reading. Keeping them apart makes it easier to correct a mistaken impression. A confident sentence is not a substitute for evidence from the actual place.
Try this sequence
- Date the note and name the viewpoint
- Write three observable details first
- Put explanations in a separate column
- Add a source only when it answers a real question
A small worked example
In the observation column, write that a surface pattern appeared beside a visible object. In the question column, ask which factors might explain it. An answer found later should retain its source and should not erase the original limited observation.
What to keep in your notes
Compare the finished note with the purpose in the opening paragraph. Keep details that help the next preparation and remove vague judgements that cannot be checked. One modest adjustment is enough for a useful review; it does not have to explain every part of the day.