Thanx for the replies people. Having considered your multiple dimensions explanations it makes more sense. All I can say is that this movie lives up to Christopher 'mindfuck' Nolan's reputation of making movies that are absolute mindfucks.

Firstly I enjoyed the movie very much. I loved the use of the science of relativity and the human nature aspects that were explored in the movie. I have a few issues though. The biggest problem for me with the movie is the time travel paradox. It is revealed that 'They' who sent the messages to the ...