Preliminary Remark
For some reason, I feel as if I should write this article here, although my main English blog is this [where you can also find the privacy declaration and contact data in English, if required by law].
I was inspired to this article by a conversation with a student, and I felt to put my thoughts down might make it clearer to the reader. I am not sure I succeeded with a “super-clear” article “in the flow”, but if you feel you would like to, please feel free to read it for getting ideas for some reflection.