For me POI has two endings, first the beginning of 5x10 with Finch talking to the machine in the diner, in which he asks his friends to survive, from that moment the machine does a simulation and from then on it is a simulation, you know if it were like that it would have been very interesting, because we could imagine any ending for them, Samaritan was a great opponent because he didn't have a "family" to take care of, the machine didn't win against him because it wanted its family to survive, that's why in this "simulation" it lost. The second ending was that the machine faked Root's death, it did this because first Root would be too injured to go into battle, and if everyone knew they would have to protect her there in the middle of a war, and so it found a way to fake her death, and use that for Harold to react, and it was using Root's voice so that Harold wouldn't suspect, and in fact before Reese dies the machine tells him this, in that months later the machine is in full swing with Root at the table instructing Shaw and Fusco with the numbers and new threats that will come.













