raj_cambridge said:One practical note: write down what you did and when, before you need it.
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.
OP back with an update, since a thread like this is useless without one.
For the archive: it took about six weeks rather than the two I expected, and the difference between those two numbers was the whole of my problem.
raj_cambridge said:One practical note: write down what you did and when, before you need it.
This answered a question I did not know how to ask.
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Browse GL BiochemClinical perspective, offered as context rather than as advice. Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the correction. That is slower than asserting, and it is the only version that survives being wrong.
Dr.BariatricHTX said:Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the…
Can confirm. Same sequence, different timescale.