Anyone else notice the Traveler looks strikingly similar to what the Didact was in from Halo 4? The Traveler is a Forerunner who fired the Halo rings to "fight off the darkness" and kill all sentient life which is why you are dead at the beginning of the game. His / her final act was to create the "Ghosts" which could use the Composer to bring everyone back to life. This is why you are Light (data) and can be resurrected over and over again... Random crazy thought of the day... mostly just bored and really want to be home buying a Suros / playing Destiny. :)