One of the best films I've seen in the recent years.

Rating: 9/10 (16 November 2014)

Nolan played with time before, in 'Memento', the film itself worked like an implied wormhole, piggybacking on which a psychological dependency was revealed. It was personal, but 'Interstellar', behind all those saving-the-humanity clichés, is a more absolute and conscious personal journey of Cooper. Earth's natural resources have come to the brink. Everybody is emphasizing on an agrarian society in spite of knowing very well that it won't do any good in the long run. Thus come the 'Brand'ed ultimatum of "leaving rather than saving" planet earth.
While watching the movie the confusion started in the very beginning when the falling of dust was delivering binary codes for NASA's location. And the entire film is based on this little creepy ghostly event. Both me and my friend (as we have developed a skill of real- time anticipation while watching a movie) were quite reluctant to go with the film as everything started with a whodunit confusion, but it was a Nolan, enough to trust, so we sat back. Now, everybody knows about worm hole, black hole etc, thanks to Nat Geo and Discovery Science, but it's not what we know, but what we make out. Before giving anything out, I want to say this is a completely personal understanding uncontaminated by other explanations, some would agree some would not. "What's Them ?" Clearly Nolan avoided the concept of multi-verse or parallel universes as that is much more complicated and would create temporal duplications like Spock meeting Spock in Star Trek which won't go with the tempo. Another proof is "them". Near the end of the film we see Cooper saying "It's us..." that gives away everything that we misinterpreted from the beginning, we thought "they" are "interdimensional beings" trying to help us, aliens to be drastic. But they were not. They were future us, trying to save their own asses by helping their past because if we die now, they will cease to exist. Much like "Back to the Future". And they are advanced enough to create a wormhole near Saturn to give us opportunity to travel "further" (the quote is intentional).
The time slow-down and p-branes and strings and gravity. The time slow down is quite understandable due to numerous popular science articles on this subject. If you move faster relative to something your watch will go tick to tock at a slower rate with respect to that. So will grow old slower to that. That has been exploited ingeniously in the film that it actually makes time an essential fuel for the journey. Where inevitable crisis arises to choose from two options of returning home or mission completion. M-theory has a dream of unifying all the four fundamental forces of nature,including gravity, which is the spookiest. After quantization, string theory there is a new unification approach coming out in theoretical physics which depicts universe as multidimensional membrane. Now all other forces except gravity have gauge bosons to carry the forces out like electromagnetic force has photons, strong nuclear force has gluons, weak nuclear force has W bosons, gravity too has a force carrying graviton which has special ability to travel through all p-dimensions (btw in string theory there are possibly 26 dimensions including 3 spatial and 1 temporal). And that is why gravity is the weakest among these four forces. And that is why Cooper was able to communicate with Murph, his daughter from the inside of the black hole through tweaking of gravitational waves (or something like that). "the Further".
We had seen it before in the "further" in Insidious chapter 2. Just like in the black hole Gargantua where where time had stopped literally because infinite curvature space-time fabric, yeah fabric, tweaking which would make Cooper able to send message through time with the help of gravitational anomaly, or gravitons or gravitational waves or whatever. Now the question is how did Cooper (survive the spaghettification due to gravity?) come out of the Gargantua? well, maybe the Black Hole is an unknown angel, everybody fears it because nobody has gone into it. Maybe it was actually acting as another wormhole to spit Cooper out at last, 80 years later, after which his age was 124 earth-years.
And finally the Quantum data and the Brand equation.Escape velocity. Evacuating earth required a huge spaceship which would carry this massive number of passengers (even a smaller number at a time would need a very big capacity) to somewhere else in space. And that space ship would need a thrust power never to be achieved. It needed something which only the quantum data beyond the cosmic censorship could provide. To solve the the Brand equation which Brand himself "solved" as an impossible thing to evacuate earth, maybe TARS' data from the metric of Gargantua provided the key ingredient. The same principle of rotating black hole namely the Schwarzschild metric along with the acquired data from the black hole must have been used to build the Cooper station and sustaining human civilization by mimicking gravity with centrifugal force. Hmmm....it's like creating a film with a hundred times the ambiguity that Nolan left for us at the end of "Inception", I was actually thinking of inception by seeing the ground being rolled up at the Cooper station at the end of the film...... Well when you expect a science fiction from a man who created "The Prestige", or "The Memento", or "Inception" you do expect something "next gen" right? Well it was deep, and mesmerizing with another Hans Zimmer masterpiece.... "Do not go gentle into that good night, Old age should burn and rave at close of day; Rage, rage against the dying of the light. "