Okay, first and foremost, I would humbly suggest that you do NOT read the other reviews here. I KNOW that sounds a little self serving, but as usual, a number of these witless reviewers totally give away the primary concept in their titles, so just trying to save you entering Spoiler Territory.
So, what we have here is a very clever concept that if it has not already been Spoiled for you, you will come to understand as the story progresses. It is a concept that has indeed been used in a few other also really good Science Fiction movies, but of course I'm not going to name them as others stupidly have done here even in their titles.
I, on the other hand, and HOPING that the idea behind this clever film has not already been ruined for you, do NOT wish to give away anything but simply as I usually try to do is give you my impressions about how well I think the film is made and if it is worth watching.
The characters are very well developed and in many cases quite amusing. The ONLY thing that honestly drove me almost totally insane is that I SWEAR at least one tobacco company must have foot the entire bill for this movie. I mean literally EVERY 2 minutes if not more often, someone, mainly the girl is lighting up. I mean, it is done to the point of total absurdity. Seriously... There must have been like 200 cigarettes lit in this movie. I personally found it REALLY annoying and somewhat insulting. I honestly saw absolutely no point in it, so FWIW there you go...
So, yes, this is a very good, clever concept that is ultimately very entertaining. If you have been fortunate enough to avoid Spoilers so far, then I think you might find this film a fun ride... I gave it a strong '7'... I KNOW I haven't given a lot of details, but there is almost no way to do so without ruining the story.
