Publishing a book is like stuffing a note into a bottle and hurling it into the sea. Some bottles drown, some come safe to land, where the notes are read and then possibly cherished, or else misinterpreted, or else understood all too well by those who hate the message. You never know who your readers might be.
One of the biggest challenges one faces while reading a book is coming across words and terms one does not understand. Of course, one can always consult a dictionary for meaning or dig out a reference ebook like an encyclopaedia or a Who’s Who or an atlas to find out more about a particular subject.