My Take On The Film
Just a quick theory:
I believe that the conversation between White and Black may not be — or may not only be, rather — a conversation between two men. I believe it may simultaneously be a representation of the thoughts which may go through this particular mans mind while staring his own death in the eye.
That is to say, perhaps the conversation between White and Black may represent the contradicting feelings one educated man may feel as he's contemplating suicide. Through all he's learned about the history of the world and the fallacies of religion, he comes to the inevitable conclusion that life is meaningless. Yet, at the same time, he also has the vague ideas of the opposing side lingering in his head — causing him to question whether or not his decision is the correct one, and if life is truly worth living.
At the end of the film, his more nihilistic ideas of life get the better of him and beat out the reasons to live that he (in the form of Black) was battling. So he heads out to try his suicide once again.
As White leaves the room, intent on trying to do himself in again, Black screams to him that he'll be there with him when he tries. I feel that, although this may be the case in reality, it may also be representative of the fact that when White gets back to the tracks, facing death, he'll once again begin this inward battle of "should I, or shouldn't I."
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S.C.W.
"We're all in the gutter, but some of us are looking at the stars"