> 2533274919794518;1:
> For all the little details people argue heartedly on here, why is no one talking about the return of the Domain??
>
> Why is it back?
> How?
> And is it really? I can’t remember if the Warden Eternal mentions the Domain specifically, but isn’t it possible that Cortana corrupted him? I don’t really think it is all a ruse, but it is worth questioning.
There was a lot of discussion about the Domain before Halo 5 and soon after Halo 5, but it’s sort of died out (at least from what I can tell when I poke my head in the forums) for a few reasons.
Halo 5 uses the Domain for a lot, but tells us nothing about what it is. It’s a network, and it heals AI of rampancy… somehow. Speculation on how is present, but Halo 5 doesn’t say anything for sure. Halo 5 tells us nothing new about the Domain except this apparent magic rampancy healing (which also was already theorized about as a possibility before Halo 5, if I remember right, following the suggestion of Dr. Halsey that an AI might be able to expand its mind into slipspace to grow without boundaries).
Halo 5 also seems to go against or at least not quite fit with what we knew about the Domain from the Forerunner saga books (and ignored most of the Forerunner saga and Halo 4 in general), which means there’s no point in theorizing or contemplating anything with what looks to be such a strong possibility that 343 has decided to give up on (or distance themselves and the story heavily away from) everything pertaining to Halo 4 and its surrounding fiction, including those books.
So, with everything that Halo 5 changed/skewed/got wrong, it’s hard to talk about things like the Domain when we don’t have a clear picture on 343’s desire to stick to old canon regarding things introduced around Halo 4. Anything we speculate on could easily be using information 343 doesn’t care about anymore.
To address your questions:
We always knew it was a strong possibility that the Domain would return eventually. It was theorized pretty early on, as I recall, that the Librarian’s “acceleration” of the Chief included a link to the Domain. Popular theory says that the Domain itself was not destroyed by the Halo Array, only the Precursor tech surrounding it (which heavily damaged the Domain), and it has been slowly repairing ever since.
There’s no reason I know of to think that the Domain isn’t really back. It’s something they’ve been leading to for a while, with the books focusing strongly on the concept and with its mentions elsewhere in the universe. We’ve even been inside the Domain through the gateway on Genesis. There’s no reason to think that everything that was told to us in Halo 5 was a lie.
In short, all we know for sure about the Domain is what Halo 5 says. Anything before that might be in question as far as future canon goes, and there’s nothing much to theorize about Halo 5’s Domain. It’s a network that heals rampant AI and gives Cortana power.