Massive spoilers, don't read this unless you've seen the movie, I'm just here to vent!
This must be someone's pet project gone wrong. Whilst there are some good time travel related parts, the overall time line gets seemingly abandoned about half way through. Where do they get the third piece of MRD from on the 2nd go round? The first is used to create the initial wormhole, then they use up another piece on their failed attempt to send the guy back (which I still don't understand why they feel that is a good idea), then the girl sleeps with the investor to get money for a third piece to do the original '2nd wormhole'? The only way to explain it is "it's a parallel universe" which is a total cop out and he might as well have just woken up at the end and have it all be just a dream.
If you haven't seen the film but read all this, just watch Primer instead. That's how you do a movie about time travel.
This must be someone's pet project gone wrong. Whilst there are some good time travel related parts, the overall time line gets seemingly abandoned about half way through. Where do they get the third piece of MRD from on the 2nd go round? The first is used to create the initial wormhole, then they use up another piece on their failed attempt to send the guy back (which I still don't understand why they feel that is a good idea), then the girl sleeps with the investor to get money for a third piece to do the original '2nd wormhole'? The only way to explain it is "it's a parallel universe" which is a total cop out and he might as well have just woken up at the end and have it all be just a dream.
If you haven't seen the film but read all this, just watch Primer instead. That's how you do a movie about time travel.