My thing about the travler made me think of many religions as the speaker spoke in the beta saying how the travler gave its life making these ghosts made me think of Life of Pi in the part about the priest. saying "All you have to know is that he loves us" and you don't question it you just accept it as face value. also in the bible god resurrects jesus to help humans see the light in belief. well I don't know about you but in the beginging of the beta my ghost ressruected me from 100's of years of death and decay to help battle against the darkness. If you look at it as a whole. the travler is like the ultimate relic in a battle of good versus evil. it can be A.I contruct like in halo some what that helps, but or it can be another theory of a ancient race who build these travlers as some sort of garden of eden. all the travler has done was travel world to world of our solar system turning planets we deemed. Uninhabitable, and this travler shows up and gives several planets life where we couldn't, I don't know seems almost to good to be true, as they say all good things can be undone, I mean maybe the travler crated the darkness, Maybe all the darkness is a collection of species trying to destroy the travler since it may have ruined there worlds. As far as we know there is only one of them maybe there were more and were destroyed by this collaboration of sorts. The travler finding them possibly obsolete for the gift that has been gifted to the humans and the other sub races of there struggles. I don't know could be a crazy theory all I know is of the many races there all after the travler and those that continue to protect it.