Most people think that everyone is idiots, but not they. Therefore, if you do not go into a purely medical definition of this word, then this diagnosis is made by everyone.
Nowadays, you can be an "idiot" in quantum physics, thus professionally understanding some kind of metallurgy. But idiocy, in its newest understanding, presupposes something that has already been repeatedly discussed everywhere and everywhere, namely, the absence of critical thinking and other self-educational things. One should not take on faith what seems rather dubious. And, as I think, here it is possible, rather even necessary, to break the commandment that is about authorities. And to draw information from specialists in their field, while remaining a specialist in theirs.
Here I am, for example, in the subject of idiots, a complete idiot. But trying to fill the gaps in different areas of knowledge with the knowledge of people who know, I try to weed out desperate charlatans who preach their thoughts, obtained by the synthesis of one gyrus with monkey obstinacy.
An idiot is one who does not doubt, and looks for answers in simple explanations, which, as experience shows, in most cases are false. As Nevzorov said: "If a person speaks to me on behalf of the truth, I immediately understand that I am dealing with an idiot."
What am I now? Each has its own truth. My own opinion is excellent, but underneath it should be a solid foundation, not damp earth.
It is for you they seem to be idiots, but for them you are an idiot (at best, a "strange guy").
People make stupid mistakes, step on the same rake, and this will never change, this is such a cycle.
Each person has his own development and his own co-office of idiocy and stupidity.
Example: friends invited you to the cinema for a new premiere, and you answer them that you will not go to the cinema with them, but read Dostoevsky for example. Friends will think you are an idiot, and you will think they are idiots.
I explained it in Japanese.