If it's crap ... We'll tell you
Well this is how I interpreted the ending to the film. It was the fact that Cid would grow up to be the Rainmaker but to becoming a superhero instead of a villain. Because if you remember at the beginning of the film Young Joe explains how 10% of the population were mutants granted the powers of T.K( telekinesis) and everyone thought after that there would be superheros saving the world; however all you got were a bunch of idiots floating quarters around impressing girls at clubs. Now jump forward to the first loop where young joe kills old joe lives his life for thirty years and before his capture he finds out from one of his former partners that the Rainmaker is cleaning house.Evidently this gets him captured taken back too the past where he informs young joe of the rainmaker. Before no one knew who this kid was therefore it a
...everything you have just written was absolutely evident and spoon-fed to the audience during the film. I don't understand what was convoluted about the ending. It was a very simple movie. Are there actually people that didn't get that from the film?
In all fairness,
The movie isn't perfect there are hairline cracks in the plot for example, e.g. why cut off pieces from the guy and ask him to attend his own death strapped down and helpless on an operating theatre bed ??? why not just kill him outright instead ?
If they went to the trouble of sending people back in time to murder them cleanly ... why was his wife in China killed outright in that future time period ? (yes I know it was an accident but .....)
They chopped him off so the present guy could suffer. Torture is a lot more painful than death, especially when they take away all ways to have a life at all.
And the last one... well, you explained it, accident and I'm sure those guys got looped for doing that