You know how the Tower just sends us on missions but doesn't let us ask any questions or find anything out?
Well if that is their intention, there is one small problem. We could just wander off and find out for ourselves. Take a trip down to the city or wherever else we might find answers.
Except we can't. Because if you go off course, a warning pops up telling you to turn back, and then you mysteriously die, and it's called a misadventure.
But how could you die when there was nothing around to kill you? Well there is one thing, actually.
Your Ghost.
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More great lore posts:
[url=http://www.bungie.net/en-GB/Forum/Post/73910450/0/0]The Ishtar Collective and the Vex[/url]
[url=http://www.bungie.net/en-GB/Forum/Post/75558721/0/0/1]Theory of the Nine[/url]
[url=http://www.bungie.net/en-GB/Forum/Post/75194540/0/0]The Darkness = The Dark Ages[/url]
[url=http://www.bungie.net/en-GB/Forum/Post/79280901/0/0]Why the Traveler exists[/url]
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Or ghosts are actually a small fragment of the traveller that it has somehow embodied itself inside this small contraption, since every guardian has a ghost it can see and watch everywhere and know every place the guardian goes, kinda like a linked network of live feed cameras... Imagine, the traveller isn't dead? it's last strength was used to create these 'ghosts'.. Each holding a subconscious part of the traveller to be distributed to guardians.