One thing I want to correct the GM on: Guardians and ghosts were created during/after the collapse, which was centuries after the discovery of the Traveler. [s]So our Guardians having pre-Traveler knowledge wouldn't really work.[/s] Also: Guardians don't discover their ghosts, the ghosts choose guardians from among Earth's dead. Actually, come to think of it, my second point kind of makes the "pre-traveler knowledge" thing work again.