NicoleRaleigh said:If you are going to change something, change one thing and give it long enough to express itself.
Right, and the exception is worth naming rather than left implied, because the exception is where people get into trouble.
NicoleRaleigh said:If you are going to change something, change one thing and give it long enough to express itself.
Thank you — that is the clearest version of this I have read, and I have read a lot of them. Taking it to my next appointment.
Clinical perspective, offered as context rather than as advice. There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.
If somebody has the primary source to hand I would rather cite it than paraphrase it.
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View Resultsingrid_STO said:There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.
Second this. Nothing to add that would improve it.
ingrid_STO said:There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.
There is a second half to this that has not been said yet. They are not contradictory, they measure different things, and this is the single most common misreading of a certificate. Purity is a relative area measurement: the main peak as a percentage of total peak area in the chromatogram. Content is an absolute mass measurement against a reference standard. A vial can be 99% pure and contain 6.1mg — pure material, overfilled — or 99% pure and contain 3mg, which is pure material and a short fill. Purity tells you what fraction of what is there is the right molecule; content tells you how much of it there is. You need both, and a certificate with only purity is telling you half the story.