The critics seem to me like they've missed the point. This film is about generating compassion for people lost in a world of drug addiction. It's meant to help us understand the erratic behavior and bizarre choices of people controlled by substances and the tricks they play on your mind. I thought it was brilliant.
One pro reviewer called it a sci-fi romance... Ridiculous... I watch a lot of sci-fi and this doesn't qualify. Romance? I guess if you are in love with your drugs... Selma IS the drugs... She's seducing him, pulling him away telling him what to do... Making him make bad choices.