A margin on the seed packet

An original explanation of an invented growing trial.

We wanted to compare two ways of sowing the same seeds. One tray stood beside the window and another under a lamp. Every label recorded the date, the number of seeds and the position of the tray. My brother suggested leaving space on each label for later notes.

That margin proved useful. When a tray was accidentally moved, we could record the change instead of relying on memory. We also wrote down when the first shoots appeared, so we did not confuse germination with the later growth of leaves. The notes did not make the trial perfect. They helped us see which differences might have other explanations before we announced that one method was better.

In your own words, explain two uses of the space left for notes.