Karthik Calling Karthik

For quite a few days I've been feeling this temptation to write what I feel about the recently released 'Karthik Calling Karthik'. Although the movie has received average attention and appreciation from all classes of reviewers and audience, the story of the film doesn't seem to have a sufficient amount of homework put behind. And this has historically been the reason why bollywood is often criticized.
We're trying to look at some finer aspect of the story of the movie. It speaks of a person suffering from schizophrenia-a psychiatric disease, since his childhood. This person, named Karthik, thinks that he had a brother and he is responsible for his brother's death who actually never existed. Very surprisingly, the hypothetical brother is so cruel to Karthik that even tries to kill him.
I believe that a deeper penetration or research into the situation depicted could reveal to the story writer that even abnormal persons don't create enemies for themselves. People with such diseases imagine of someone they miss badly, most often a parent or a brother or a sister who is absent in their life and present in their surroundings for other people. As the patient feels an emptiness, he/she creates an imaginary appearance of that person and tries to get some kind of care and affection from him/her. Trying to personify a cruel brother is totally indigestible to me.