I don't understand what you comment contributes to my knowledge. The author says that he will explain a magic trick. He says that step one is to XYZ. He does not say how to XYZ. He instead links to a Wikipedia page that says what XYZ is, but doesn't describe how to XYZ in a way that would work in the magic trick. Instead, it links to a book that
might say more about XYZ. I am not about to buy that book.
Do you consider that trick to be sufficiently explained?
