I read a post earlier this week about a theory that the darkness kills off the light, but Rasputin still remains after the darkness destroys everything. So Rasputin thinks about it a long time and eventually finds god or becomes a god and goes back in time as the traveller to try to save the light. He does this over and over, new copies are made of Rasputin every time he resets everything. Eventually he gets a new idea and creates the ghosts to survive the darkness, and that is where we are at now.