I love the way they tell the story, by mixing the order of events.
Of course, it is not a "positive" movie, but its does talk about HOPE, LIFE, DESTINY, how the world goes around and how one simple event can change our lives forever. I am yet to see the behind the scenes.. And I'll come back to discuss it.
The ending is the best part for me.. I don't think films should end happily, after all, that's not real life.. And a film is an imitation of it.