I love it when this happens: a film is promoted as if it is an effects-laden, action-heavy Hollywood blockbuster, posters on buses and everything, but when you get to see it, it turns out to be a low-key, four-handed character-driven stage play. Brilliant! There's plenty of darkness, drama, threat and revelations for all four characters, but not a single fireball.
Alex Garland's involvement probably boosted the promotional budget, but rightly or wrongly, it's probably the iconic look of Ava's transparent robot body that has mis-sold the movie. I do think, once again, that roboticists should think twice before designing their robots to resemble attractive women - have they not seen The Machine, Humans, Battlestar Galactica, or (especially) Austin Powers: International Man Of Mystery? The warnings were all there. Robots need to look like robots, or there'll be so much trouble.