Disappointing: spoiled by too many unbelievable plot elements

Rating: 5/10 (18 November 2014)

I was looking forward to this movie, with its elements of adventure and discoveries during interstellar travel. But the movie has too many unbelievable plot elements that ruined the experience for me. The superb music, the special effects and the actors saved it from being a disaster. Here are some of the indigestibles.
When Cooper is fighting with Dr. Mann, the spacecraft coming to save him is flying *underneath* a rock formation. But I do not remember from other scenes that it actually contained these caves. Not so nice.
More problematic is that we were led to believe the method of hibernation: sit in a fluid, lie down, and somebody else zips the bag. Apparently there was no problem with suffocation, even without an oxygen mask? Also, we are to believe that if the pod is opened, the bag is unzipped, and somebody sits you up, you will just wake up with all our memories in tact immediately? Unbelievable. Besides, how did Dr. Mann zip his bag and close his pod?
Worst, touching at the core of the movie, Cooper discovered a binary code in his daughter's room, apparently coming from "the others" (postulated 4 dimensional creatures). With this information, he finds the NASA quarter and is invited to join the space mission. Later, it is suggested that it was he himself communicating the code to himself, while he was being trapped in the 4 dimensional room. Yet, in another scene, he tried to convince his daughter not to let him go (because now he knows that he will get trapped). These two messages are clearly contradictory. Besides the time loop paradox that it involves: how could he communicate the coordinates of the NASA quarters to himself BEFORE he left, in order to leave? And then get trapped in the 4 dimensional room, so he could try to PREVENT himself to leave? (Even the last part alone, is paradoxical, because he could only warn himself because he left, and so how could he not leave?) This unexplained paradox ruins the movie for me.
I found it unbelievable that Prof. Brand would lie about his findings, in order to be able to motivate the crew. I believe that he should have been honest, in order to INCREASE the success of the mission. I believe people can make moral decisions with full information. If it was impossible to return, it would only make it more important to succeed in colonizing another planet. He deceived them in believing that he could not solve the equations that would tell him how to return, but that he could solve them before they returned. Prof. Brand had in fact solved the equations and it had told him that it was impossible (!) to come back. Therefore, Cooper's daughter, when she found out about this deception on Prof. Brand's death bed, could never find out if her father knew before he left that he would not be able to return. Later she discovered that her father was communicating to her through the watch, and she was hoping for his return despite Prof. Brand's belief. Why? There was no mention of anybody negating Prof. Brand's results. Unbelievable.
Then, at last, it turned out, that it WAS possible to return and Prof. Brand had been WRONG! Also very unlikely and unbelievable. In a scientific team, results are checked and tested. So, even if Prof. Brand believed it was impossible to return, now we know that he was wrong. So, if his conclusions had been checked, another solution could have been found.
In fact, without knowing anything further about the movie than its title, I theorized that the crew would end up colonizing another planet as the ONLY survivors (and I would love to see how they discovered this for themselves). I was wrong, but Prof. Brand believed it, so I wasn't that stupid, was I? The movie did not deliver, though.
I have more objections to the movie, such as the bleak portrayal of the "inhabitable" planets. If we will ever be able to do interstellar travel, we'll have a good idea for what kind of planet we are looking for. We will have very sensitive telescopes and computers that analyze the data of a 720 degree (i.e. full 3D range) input channel and gives us exact data about atmospheres of planets within range (tens of light years).
It was disappointing that a lot of interesting aspects of interstellar travel and colonizing have not been touched upon in this movie. We might find life forms much different from ours and it will be challenging to live in harmony with them during colonization.
I wish I could be more positive about this movie as I had high hopes for it. And although now I would not recommend this movie to any SF movie lover, because of the highly problematic plot, I found the actors proficient and skillful. They made the psychological and interpersonal aspects of the plot acceptable, so that I conclude that the characters were sufficiently detailed and human for my taste. It's what I've missed of vision that prevents me from enjoying what was visible.