Dr.PathRoch said:The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.
Adding the part of the answer the thread has not reached. It is worth asking what the claim would look like if it were false. If nothing would look different, it is not a claim about the world and no amount of discussion will settle it.
The figures, for anyone assembling their own picture. Practical: whatever you change, write down the date and the reason. In three months the reason is what you will have forgotten, and the reason is what makes the record worth having.
One thing that is still open after Dr.PathRoch’s answer:
Was that from a primary source or from a summary of one?
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View Resultsraj_cambridge said:Practical: whatever you change, write down the date and the reason.
This is where I part company with the consensus forming above. The counter-case has not been addressed. Somebody upthread described the situation that does not fit, and the thread moved on rather than engaging with it, which is the failure mode this board is supposed to avoid.
That is the short version; the long version is somebody else's post.
raj_cambridge said:Practical: whatever you change, write down the date and the reason.
Right, and the exception is worth naming rather than left implied, because the exception is where people get into trouble.