Following on from traveltech_sara — and this may be the naive question:
What did you change at the same time, and can you separate the two now?
matt_MKE said:I changed one thing, left everything else alone, and waited the full interval before looking.
I do not accept the framing. The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.
matt_MKE said:I changed one thing, left everything else alone, and waited the full interval before looking.
No disagreement, though it depends on where somebody is starting from, and this thread has been assuming a starting point nobody stated.
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Shop Reference Standardsmatt_MKE said:I changed one thing, left everything else alone, and waited the full interval before looking.
Saving this. It is the first explanation that did not require me to already understand it.
From the other side of the consultation, briefly. Order of operations matters more than any single choice here: establish a baseline, change one thing, wait long enough for it to express itself, then measure again under the same conditions.