I do not put into question that we are seeing some real effects. I am questioning the quality of individual studies, which even when viewed collectively, almost

I do not put into question that we are seeing some real effects. I am questioning the quality of individual studies, which even when viewed collectively, almost always fail to yield a clear-cut answer. In summary, if I see a thousand studies of dismal quality all saying the same thing, I start to suspect there might be something. But that is not due to the scientific prowess of the authors, and the evidence, although abundant, is still of dismal quality. Every day, you will hear people say: "thi evidence about that is now extremely solid". Most often, things have flipped 5 years from then, with the latest fad.