I just watched Gravity on Saturday (excellent movie, and only the second ever for which I can say it is worth paying extra to see in 3D), and I’ve been pondering whether it should be considered science fiction. Given my adherence to the cladistic view of genre, I’d say yes: it is clearly descended from the cinematic tradition of science fiction films, with its depiction of space as a sublime realm of awe and terror (compare 2001: A Space Odyssey or Alien), its use of both strategic silence and sounds such as static, heartbeats, and heavy breathing to create tension (2001 again), even the use of special effects as the primary antagonist (Star Trek the Motion Picture, War of the Worlds (1953 or 2005), there are countless examples good and bad) are all drawn from the tradition of science fiction film. The characters, meanwhile, are straight out of the Golden Age pulps: the brave but inexperienced woman scientist, the old space cowboy, the reckless rookie who is first to die. The film is steeped in science fiction; the fact that nothing which occurs in it is any more fantastical or implausible than a heist film or cop movie is largely irrelevant in the face of that heritage. It’s like saying that ostriches aren’t birds just because they don’t fly.