VanRx_Mike said:The distinction that resolves most of these threads is between what is true on average and what is true for one person.
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.
gary_naperville said:Right, and one flattering data point from a group buy is not consistency.
Bookmarking. The distinction being drawn above is the one nobody else makes. Adding it to my notes with a link back to this thread.
VanRx_Mike said:The distinction that resolves most of these threads is between what is true on average and what is true for one person.
Filing a mild objection. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit. 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.
If somebody has the primary source to hand I would rather cite it than paraphrase it.
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Shop Reference StandardsAdding the numbers, since they settle part of this. The boring version of this is the one that works, and the boring version is: measure a baseline, change one variable, wait, measure again under the same conditions. Nobody wants that answer and it is still the answer.