Good discussion, but this conclusion: > I don’t know. Maybe a little. is not the right way to interpret the null result (insufficient evidence to reject null hypothesis that it has no effect) because the prior for supplements that people are trying to sell you is so low. In the absence of clear, strong evidence, you should assume the the whole thing is just an example of motivated reasoning. People want nootropics to…
What I'm getting from all this is that we have an armchair expert explaining details about something they're not an expert in, and we have you reviewing the way they present this information, saying their very weak hedge wasn't strongly negative enough. Based on priors about the industry. Basically, HN doing HN things - having a good deep think about topics outside their realm of expertise, then debating the minutiae…
Is discussing such secondary but still highly relevant aspects verboten? Must every comment here be by a lead researcher in the specific field? Would a biomedical science researcher necessarily have any more expertise on these important secondary aspects?
"Trust me, I'm a scientitian". No thanks.