Where’s the Line Between Science and Witchcraft?

Questions about what qualifies as witchcraft, where the line is between witchcraft and science manipulating nature to accomplish things, whether the devil is omnipresent, and whether a demon can possess a location and affect the people at that location. What specifically qualifies as witchcraft, and where’s the line between witchcraft and science manipulating nature to accomplish things? Is the devil omnipresent? Can a demon possess a location and thereby affect the people who are at that location?