This idea of extraction could make for a compelling film on its own. Perhaps, in the hands of a less complex and thorough writer, it would have been enough of an idea to explore the boundaries between dream and reality and to create characters that seemingly get lost and confused by what is dream and what is reality. But, Nolan takes this high concept even deeper and inverts it making it a story of inception--the planting of an idea in someone's mind by entering their subconscious.
In the film, we learn that inceptions are illegal and dangerous. The subject whom the crew is trying to do an inception on can easily reject the idea if the subject is not made to think it is his or her own.
The target for the inception in the film is Robert Fischer Jr., whose father owns a corporate empire that Saito, a competitor, wants to see broken up so he hires Cobb to develop a plot to get into Fischer Jr.'s mind to plant the idea that his father's empire needs to be broken up so it will be less powerful.
In comparison to other films, there is no film quite like it. The concept may remind people a bit of Steven Spielberg's Minority Report, which involve "precogs" being able to detect when a person is going to commit a murder so they can arrest that person and charge him or her with "pre-crime" and prevent the crime from happening. But, the concept pales in comparison to Inception.
The philosophical notions raised in relation to ideas, while apolitical, may evoke memories of V for Vendetta, which ultimately is a story about the power of an idea and how, as V says in the film, "ideas are bulletproof." And, also, the way that dream worlds are created in the film may seem similar to Alex Proyas' Dark City, a film about a city ruled by a group of nocturnal Strangers who want to know how humans tick so they build and rebuild this city each night and play with relationships between humans.
Really, there is no film quite like this one. The way that Nolan plays with time is superb. Perhaps, the most engrossing aspect of the film is how the characters can inhabit more than one state of subconscious in the film and how adept Nolan is at keeping straight all the details and ensuring that what happens in one state has an effect in the other states so as to remind us that these worlds are all part of one subject's dream state and so as to also remind us in our minds that there is still an element of reality to the story that is being played out in front of our eyes.
In the film, the crew conducting the inception has an architect (Ellen Page) build the dream world that the crew will conduct the extraction or inception in. Here, Nolan is the architect of a dream world, which he takes us into. His inception is that films can be more than just heavily marketed action "comedies" or cheaply constructed movies based on a true story.
The cerebral ecstasy of all of this not only raises issues related to philosophy and science but also provides a privilege that many films do not offer viewers. The high concept and "maze" nature of the film shows Nolan has a respect for the intelligence of his audience.
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