In the final chapter, the paranoiac is taken away by the police. Additionally, the loss of the autistic forms a void in the academic's work, when he realizes that the majority of his factors are solved. He builds a computer program which predicts his every move, and spends some days entertaining himself via his 'twin'. However, since some key factors which the autistic could not account for are missing, the predictions are very limited in time. When the academic puts in long intervals, the program states that he is not complete, that such a molecule is not stable enough to exist that far in the future. In his despair, he becomes closer to the immigrant family, falls in love with the daughter, marries her and takes the previous apartment of his autistic friend, which is now in true harmony, since the emotion love was what was missing. A young couple of average education with 2 children moves into the paranoiac's previous apartment, since no wealthy people wish to live there because of it's past history. The children of the immigrant family begin to move out, and all parties decide to renovate the heating system of the house.
The end of the book:
As they begin to take out the heating system to make it more efficient, they discover that an old man lives on the fifth floor of the house, and had been listening and watching all of them for as long as they had been in the house. He had built the house many, many years before, but they had all forgotten about him. But he had been writing a blog about their many transgressions over the years, and that had kept him in good spirits. They all decide that they will have 'house' dinners in each of the 4 apartments every week, and invite the old man, since he can no longer use the heating system to hear what they have to say, and they enjoy his seemingly infinite wisdom and kind spirit.