It's infuriating that some critics feel qualified to bestow the title of "Science Fiction Masterpiece" on conceptually incompetent art fare that simply conjured the time travel trope. Don't let anyone tell you this is Science Fiction. It is a beautifully constructed avant garde art film showcasing men being nasty, a fantasy female focal piece... and blindingly pretentious stupidity in execution of the premise- so French! I have yet to see a French "Sci-Fi" film that didn't fit this mold of complete disregard for the requirement of a coherent and plausible premise in lieu of just "doing weird things and strapping people into uncomfortable apparatuses accompanied by drama and magic" save the fantastically surreal, yet present "Imortel: Ad Vitam" (2004). This wouldn't raise my ire so much if we weren't still being subjected to braindead visual confections of Sci-flavour from the likes of otherwise wonderfully effective director's like Luc Besson. Please Hollywood, please, stop giving him money to make insults to legitimate high concept science fiction. Also, I still haven't brought myself to watch it, but wasn't this essenially the plot to the latest Nolan insult, Interstellar?