I think the movie was very good but it looks like it went over every ones head;). Its underlying psychological interpretation has yet to be decoded. I feel the director wanted to touch upon the hidden subconscious mind layers we all have. The plot is perfect and when the accident takes place the hero goes into a panic mode and gulps down a heavy dose of sleeping pills to calm himself down but instead falls asleep...in his deep sleep state his subconscious mind is trying hard to cope with the calamity he would have to face up to when he finally wakes up. He then wakes up inside a dream which is inside another dream which is inside another dream...thus trying to prepare him mentally to face the consequences he will face once he actually wakes up. He keeps getting up from one dream into another only to find himself facing the fact and understanding the gravity of his situation n actions. His so far carefree careless attitude in life sucked and finally he will to pay for all of it. when he actually wakes up from his drugged state he finally understands that the reality will not change and the subtle clues his mind was giving him were to make him realise what a big blunder he had comitted...he has slept and killed his younger baby sister who he had been separated from when his parents split up years back. His careless debunched life had finally caught up with him and made him loose all that was precious to him. Thus ending the movie and making the audience go into a self introspection mode which makes u feel a bit sick inside...because the society we live in accepts such behaviour.