you are pessimistic ... it's more
https://fr.wikipedia.org/wiki/Effet_placebo
You are right to emphasize this aspect. Indeed, the question was seen and reviewed some time ago or it appeared that the placebo effect was between 10 and 90% according to studies, individuals and pathologies. So individually and not as an average that means nothing.
If for the most numerous pathologies the effect is 10% (with the pif) and if for the most rare pathologies, the number is 90% (with the pif) that obviously can not give an average of 50% and therefore the number in relation to the total number will be closer to the floor than the ceiling and that studies are rather vague, as for vaccines, obviously.
Just a remark : " Placebo acts not only on subjective signs (pain, anxiety, depression, etc.), The author has never struck a hammer on the fingers or stuck them by a door. Nothing subjective that I know! In accordance with what he says afterwards, he should have written NON-MEASURABLE signs under the cover of devices that beep, beep, but not with our inner device that goes on, goes. So, not so long ago, our medical bulb heads considered that a baby could not suffer and the operations were done in a hurry. And that goes on with the vaccines, again.
https://www.agoravox.fr/actualites/sant ... -ne-137003
Beyond that and to return to doping with water, there are dozens, even hundreds of experimenters, including me, who have verified the effectiveness of the system (which does not say that all systems have the same results, far from it), but it is bad and worse than ignorance to say the opposite.