One concrete data point for the thread. If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way. Most of the apparent contradictions in these threads dissolve at that step.
A narrower follow-up, since the general answer is now clear:
How would you tell the difference between that and the alternative explanation?
lisa_labSD said:If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.
Filing a mild objection. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit. Filing an objection on the n=1 problem. Personal experience is genuine evidence about one person and very weak evidence about anybody else, and this thread keeps promoting the first into the second.
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Shop Reference Standardslisa_labSD said:If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.
That is right for the common case. Whether it is right for the case being asked about depends on a detail that has not been given.
lisa_labSD said:If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.
Saving this. It is the first explanation that did not require me to already understand it. Printing the relevant bit and taking it with me.