So many are asking was it a dream or was it real...
The movie actually gives you guidelines to elucidate the answer to that question.
Rule #1: Does the totem stop spinning or does it continue indefinitely?
Rule #2: How did the story begin?
With regards to #1 the top continues to spin. It makes noises like it is coming to a stop but somehow continues on. It would be erroneous, and in a sense a 'leap of faith', to assume the top will come to a stop. As the film ends the top IS still spinning and the screen goes black, in a sense we are all in limbo.
With regards to #2 think about how the movie begins. How did Leo get to where he was? How did he get washed up on the beach? Can't remember...
As was mentioned earlier, Leo's wife emerged from the dream and planted the idea in her husband's head to help remove him from the dream world so he could rejoin his family in the real world. But Leo resists and continues to imagine in the dream world (reuniting with a thief in Mumbai, meeting up with an underground chemist, partaking in international corporate espionage, raiding a secret snowed-in fortress, etc.). These things sound like a dream.
Leo's character is at a crossroads however now that his wife has departed the dream world. Everything they had worked to build as architects was now crumbling (remember the buildings on the shore?) and he needed a new framework...enter Ellen Page's character. This new architecture and newly created story line allows him to continue living in the dream world. His wife's desperate attempt at inception ultimately fails and he continues on in the dream world.
Our dreams are a constant battle between the subconscious and the conscience. Our subconscious briefly wins the battle during sleep and creates dreams. When you wake the battle intensifies and ultimately the conscience restores balance in the real world and works feverishly to erase the dream from your mind (remember when Leo's character asks why is it so hard to remember the dream after you wake up?). Occasionally the subconscious has fleeting victories and you are able to recall parts or even the entirety of a dream but the conscience wins the war b/c it tells you that dream was not real.
Leo's character's subconscious is in strict control and has conquered his conscience.
The movie actually gives you guidelines to elucidate the answer to that question.
Rule #1: Does the totem stop spinning or does it continue indefinitely?
Rule #2: How did the story begin?
With regards to #1 the top continues to spin. It makes noises like it is coming to a stop but somehow continues on. It would be erroneous, and in a sense a 'leap of faith', to assume the top will come to a stop. As the film ends the top IS still spinning and the screen goes black, in a sense we are all in limbo.
With regards to #2 think about how the movie begins. How did Leo get to where he was? How did he get washed up on the beach? Can't remember...
As was mentioned earlier, Leo's wife emerged from the dream and planted the idea in her husband's head to help remove him from the dream world so he could rejoin his family in the real world. But Leo resists and continues to imagine in the dream world (reuniting with a thief in Mumbai, meeting up with an underground chemist, partaking in international corporate espionage, raiding a secret snowed-in fortress, etc.). These things sound like a dream.
Leo's character is at a crossroads however now that his wife has departed the dream world. Everything they had worked to build as architects was now crumbling (remember the buildings on the shore?) and he needed a new framework...enter Ellen Page's character. This new architecture and newly created story line allows him to continue living in the dream world. His wife's desperate attempt at inception ultimately fails and he continues on in the dream world.
Our dreams are a constant battle between the subconscious and the conscience. Our subconscious briefly wins the battle during sleep and creates dreams. When you wake the battle intensifies and ultimately the conscience restores balance in the real world and works feverishly to erase the dream from your mind (remember when Leo's character asks why is it so hard to remember the dream after you wake up?). Occasionally the subconscious has fleeting victories and you are able to recall parts or even the entirety of a dream but the conscience wins the war b/c it tells you that dream was not real.
Leo's character's subconscious is in strict control and has conquered his conscience.