In Shakespeare’s Hamlet there is a celebrated scene involving Hamlet, the ghost of Hamlet’s father, and Hamlet’s friend Horatio. Horatio, like Hamlet, is a student at the University of Wittenberg. He is skeptical about ghosts and finds the idea of Hamlet conversing with the ghost of his father “wondrous strange.” To which Hamlet responds, “There are more things in heaven and earth, Horatio, Than are dreamt of in your philosophy.”1 How right Hamlet
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