From the perspective of the patients in this type of research and "treatment," I think you are correct. Looking at the effect on science and knowledge as a who

From the perspective of the patients in this type of research and "treatment," I think you are correct. Looking at the effect on science and knowledge as a whole, however, the observer-expectancy effect is quite damaging and is not a mystery at all. This team (and many other teams) of unfortunate researchers got caught up in a belief system that skewed their results. Ironically, the more skeptical one is of a particular belief, the deeper in love one will fall with it when it appears to be correct.