Short journal · Original editorial · Memory needs context
A small trial has a result but no record of its setup.
A saved item is easier to use when its reason travels with it. Dates, sources, and short explanations can do more than an elaborate filing system. Start with the items you actually expect to revisit and leave uncertainty visible.
Save the relevant conditions beside the observation.
A short note can preserve what happened: the setting, the change, and one observation. Avoid claiming more than the attempt showed.
Try a question
What would you notice after trying this in one small, real situation?