Semirhage? Truth or lies?

I think the main point so many people are so willing to dismiss and forget is that for someone to be diagnosied they have too be studied, put it this way, someone tells an expert something, she has no idea of the person mentally at hand she gives her opinion, or at least we are told she does. Lots of you are so happy to believe this but would any of you let someone who didnt know you tell you through someone else that they know something about you, which couldnt be proven? Like saying the economy is safe because i'm an expert in shares

Her comments have been proven--her expertise allowed her to realise the truth and state it, but we don't believe her because of that, we believe her because we have seen third person that her comments are one hundred percent correct.