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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I think the Ghosts were old scientists from the Ishtar Academy that got corrupted by the Traveler. In the mission where the Archive refers to the Ghost as "Dr. Shin" (Shim?), seems to startle Dinklebot. So much so that it feels like a reminder of an existence he'd forgotten long ago. I think in a fully fleshed out Destiny story, Dinklebot learns that he has been a pawn of the Traveler and convinces your guardian to side with the Crow after learning the truth. Just my speculation, nothing much to base the theory on.