The movie was originally inspired by 'the Gods Must Be Crazy', and there is
a short homage to that movie at the very beginning, along with an homage to
'The Prisoner'. The directors cited a few other cinematic and philosophical
references, but no science fiction. Peter Weir, one of the directors, tends
more towards literature and European philosophy. The underlying themes of
the movie, some cultural and some philosophical, are universal enough to
have found their way into many genres throughout literature. I certainly
don't think that any science fiction writers invented those themes, although
many have found interesting applications for them.
I just realized that our European friends probably won't get to see this for
the next year...
Sin,
Kathryn Aegis