Finally got to see this film, having waited to read the book it came from. There is no point beating about the bush, this is one of the worst movies I've ever wasted my time watching. I followed all the time jumps, that doesn't take an Einstein, but they were trendy and uncomfortable to watch. Note to Director: This is not about you. Mostly though: the "Music" !!!! Too loud to hear the dialogue, too intrusive and too constant. I watched on DVD, but several friends, who knowing I have physics qualifications were reluctant to express their deafening cinematic experience to me until they knew my opinion. Just Awful.