I want to tell everyone who is planning to watch this movie only one thing. It is not purely a sci-fi film. This movie is so much more than that. Many people have misunderstood the movie because they all expected the movie to have a conclusion. I would say this is more of a psychological thriller rather than a Sci fi movie. This movie ends with an open ended question which the audience can interpret in two completely different ways-- you can either stick to science, scientific theories, worldly interpretation or you can go for an unearthly, supernatural, beyond scientific explanation. And that is the beauty of this film. I don't think us malyalees will quite understand the film in a way it's supposed to be understood. Because this is a movie, ahead of time, ahead of its audiences.