Shawn Coyle and others
Science Fiction
1.  We’re Not in Kansas Anymore: We must learn early on that this universe differs from ours because it has some magic/tech that our universe does not.
2.  Rules of the Universe: We must have some insight into how the magic/tech works—not the mechanics of it, but the global rules, such as who can use it, what it allows, etc.
3.  All Magic Has a Price: There must be limitations to the magic/tech, a cost to using it.
4.  Magic Makes Trouble: The magic/tech must shape the character and/or society in a way that drives the plot. The magic/tech or the society it enables, creates the problem.
5.  Magic Aides the Hero: The magic/tech must also be relevant to how the problem is solved. (Even if the solution involves destroying it, as in Forbidden Planet, or being destroyed by it, as in 1984.)