Found this through search years later and it is still the best discussion of the question, so adding one thing. 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.
One thing that is still open after Dr.PulmRoch’s answer:
What would you measure differently if you were starting again?
ZaraB_AL said: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…
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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Browse GL BiochemZaraB_AL said: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…
Agreed on the substance. I would put less weight on the timescale, because two months of anything is not enough to distinguish a trend from a wobble.
ZaraB_AL said: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…
That reframing is the part I needed.