And by the way, I wanted to point out that Kindred is not science fiction. You'll note there's no science in it. It's a kind of grim fantasy.
Octavia ButlerFantasy is totally wide open; all you really have to do is follow the rules you've set. But if you're writing about science, you have to first learn what you're writing about.
Octavia ButlerReligion is a dangerous prod, because it can always be misused and get out of hand, but it's useful for keeping people on the straight and narrow.
Octavia Butler