Some science fiction films take us to different worlds or alternate realities, or offer visions of the future. In each of these new worlds, certain new rules apply. Sometimes the rules are pretty simple and can be easily and clearly established, as in Star Trek or District 9. Other times the rules are exceedingly complex and raise a million questions, as in the new Surrogates, which is based on a comic book by Robert Venditti and Brett Weldele.