One thing that is still open after Dr.ObesityLA’s answer:
How people are distinguishing a supplier having a bad batch from a supplier on the way out?
Admin said:I changed one thing, left everything else alone, and waited the full interval before looking.
This is where I part company with the consensus forming above. I think the framing smuggles in the conclusion. Ask it the other way round and the obvious answer reverses, which usually means the question is doing the work.
Admin said:I changed one thing, left everything else alone, and waited the full interval before looking.
No disagreement, though the timescale matters more than the mechanism here. Most of what looks like a difference in kind turns out to be a difference in how long somebody waited.
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Browse GL BiochemAdmin said:I changed one thing, left everything else alone, and waited the full interval before looking.
This answered a question I did not know how to ask.
Adding the clinical framing, because it changes how the question reads. It helps to say which part of this you are uncertain about. A precise question gets a precise answer; a general one gets everybody’s favourite anecdote.