: The Flood are Precursors. The survivors took form as dust that could later
: regenerate itself. Laying dormant for so long, the dust became diseased
: and rotten. Yet, the others saw this as a golden opportunity. They also
: declared themselves as "legion."

HALO 5 NEEDS MORE PRECURSOR INVOLVEMENT. This makes me way, way more disappointed with how Halo 4 turned out now.

: The Forerunners who chased down the Precursors in other galaxies were not
: without internal strife. Many could not bear the shame of returning to
: Orion after exterminating their creators. Abandoning their great
: expeditionary fleet, they secluded themselves to a simple planet with
: little in the way of natural resources. These martyrs did on the other
: hand create an organic Domain risiding within all of the planet's organic
: life. The Librarian was implanted, through an old woman's bite, with a
: geas-like connection to these people's history, culture, and language.
: Audacity returned to Orion hundreds of years before Ur's release on Earth.

I'm confused, so I'm gonna try to sort this out:

There are Forerunners in another galaxy (maybe living in the current era), and Librarian is related to these people through her geas?

And who is Audacity?