Answer:
Theory 1: That he hid secret messages In his writing
Theory 2: That he wasn't really the one writing his work, and that he hired others to do the work for him.
Theory 3: Because of his writing lining up with the future so often, some believe he is a time traveler.
Step-by-step explanation:
Support for all 3..
Theory 1: An example being "Fair is foul, and foul is fair" chant in Macbeth reflects a world turned upside down, and some interpretations suggest it could represent a future downfall in society.
Theory 2: The authenticity of if he wrote it is a doubt as he did not have the education level of somebody producing the writing he was, so people began believing somebody much more educated wrote his works.
Theory 3: In Shakespeare's play "The Tempest," the character Prospero is often associated with knowledge and control over the elements, including his ability to summon a storm. The issue arrises where he is able to talk about methods about forecast and weather tracking that had not been known in his time.