The figures, for anyone assembling their own picture. Practical: whatever you change, write down the date and the reason. In three months the reason is what you will have forgotten, and the reason is what makes the record worth having.
A narrower follow-up, since the general answer is now clear:
What did you change at the same time, and can you separate the two now?
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Shop Reference StandardsDanielChem_CHI said:Practical: whatever you change, write down the date and the reason.
Agreed, and the size of the effect matters as much as its existence. Something real and small gets treated here as though it were real and decisive.
Correct me if the detail matters more than I have assumed.
DanielChem_CHI said:Practical: whatever you change, write down the date and the reason.
That reframing is the part I needed. Sending this to two other people who asked me the same thing last week.