Setting aside the question of these stories 'veracity, what sort of theories have led people to believe that a little piece of paper could possess such power?
故事說來有名有姓，活龍活現。姑且不論真假；究竟是什麼理論，讓人願意相信一張小小紙片，可以發出如此威力？按照道教的說法，威力並不在紙片，而是「天地間不可知的鬼神」。