The big program

Are we independent or dependent in reacting to our environment?
At the outset it may appear to us that we are being controlled by none other than by our mind itself. But who is controlling the mind?
There is no specific answer but a mere observation in most of the cases leads to the fact that we are nothing but a variable in the big program being run by some one.
Do not you think so?
I feel we are getting integrated to the environment in which we live with time and our scope to think outside is becoming limited. Yesterday I was watching a movie and at one point of time there was a scene, which the director wants to show it as a sad one. There was a background music which says that the scene is sad. Eventhough I have been watching the movie for an hour, rather than judging the scene, my mind started interpreting the scene as sad merely based on the background music. This is just an example of how we are being conditioned to respond in this world.
Our behavior is definitely as a function of the environment in which we live. This includes our friends, parents, tv shows, news papers, books etc. So can we predict what a person behaves given all these conditions? Ofcourse this is waht we do always in our daily lives without knowing it.
If we believe that a person's behavior is determined by his Physiological and Psycological parameters, we can definitely model each ones behavior. Those equations may include a variety of variables ranging from temperature, humidity of the environment in which the person operates to his blood pressue, heart beat, motivation, intelligence, attitude, etc. Further, the difficulty is that all these equations are not independent but they are interdependent. This means our behavior definitely depends on our neighbour and his behaviour depends on ours.
This shows that we hardly think what to do in most of the situations rather than givining an output (response) based on the set of inputs.
We are just a solution of these complex equations!