Editing Domain

{{Era|Forerunner}}

{{Quote|The Domain is the soul and record of all things Forerunner.|[[Juridical|Senior Juridical]]<ref name="prologue"/>}}

The '''Domain''' is an esoteric quantum information repository that was once used by the [[Forerunner]]s to contain vast amounts of knowledge, most notably their cultural and ancestral records.<ref name="c167"/>

[[File:H5G-John&Cortanadomainghost.png|thumb|right|[[Cortana]] contacting [[John-117]] through the Domain in [[2558]].|200px]]

The Domain was an immaterial reserve of knowledge and collective experience viewed by the Forerunners as the essence and living expression of their culture and history. In addition to the ancestral impressions and memories contained within, information could also be stored in and retrieved from the Domain for practical purposes. There was a mysterious quality to the Domain; despite its ubiquity in Forerunner culture, its exact nature or origin remained largely nebulous even to Forerunners. Due to these abstruse aspects, the Forerunners treated the Domain as something mystical and transcendent; it was regarded with reverence and connected to the Forerunners' [[Mantle|religious beliefs]].<ref name="p234"/><ref name="s55">'''Halo: Silentium''', ''page 55''</ref><ref>'''Halo: Silentium''', ''page 271''</ref><ref name="s275"/>

Forerunners used the Domain via various technological systems, most commonly their [[Forerunner personal armor|personal armor]]. While the artificial world of [[Genesis]] served as a primary link into the Domain,<ref name="H5G">'''[[Halo 5: Guardians]]'''</ref> connecting to the Domain was possible for mature Forerunners anywhere within the Forerunners' sphere of influence, regardless of distance.<ref name="c167"/><ref>'''Halo: Cryptum''', ''page 13''</ref> This was typically accomplished via an intermediary, most commonly a personal [[ancilla]] as well as [[Haruspis]]. A [[Cryptum]] also acted as a mediator between a Forerunner and the Domain; meditative [[xankara]] in a Cryptum provided a much clearer and more unrestricted experience of the Domain than contact when awake.<ref>'''Halo: Silentium''', ''page 255''</ref> Dedicated [[Z-9930 Information Vector Console|terminals]] were also sometimes used by ancillas to connect to the Domain when on Forerunner worlds or installations.<ref>'''[[Halo 4: The Essential Visual Guide]]''', ''page 129''</ref>

The Domain had its own set of rules and restrictions it rarely violated. Forerunners could only view information that they already knew or what was otherwise available to them, namely data stored in the Domain in recent times. The deepest records contained in the Domain could not be accessed, due in no small part to the fact that information in the Domain was not static: the records changed over time as new visits by newer generations laid new layers of information which settled into its own patterns and sought to make itself more complete.<ref name="s182">'''Halo: Silentium''', ''page 182''</ref> These changes were regarded as sacred, and were never reversed or corrected.<ref name="c167"/> Over long periods of time, older information in the Domain ultimately became unintelligible to all Forerunners, even Haruspis.<ref>'''Halo: Silentium''', ''page 58''</ref> Due to these anomalies, the Domain was not commonly used as means of communication; messages could be inexplicably altered on the way.<ref name="c125">'''Halo: Cryptum''', ''page 125''</ref>

The Domain retained partial impressions of individuals who had visited it in earlier times. Forerunners connected to the Domain could access these essences, although they only manifested themselves as abstract echoes like emotions or memories as opposed to complete personalities.<ref name="s255"/> The Forerunners also viewed the Domain as a form of afterlife, believing that the "essences" of individuals [[Mind transfer|passed]] into the Domain upon death.<ref name="p234">'''Halo: Primordium''', ''page 234-235'' (''"But to all of us there is a time like this, when the Domain seeks to confirm our essences, and for you, that time is now"'')</ref><ref>'''Halo: Silentium''', ''page '' (''"You have come to remove me. Please do. I have been so long with the Domain that I will quickly pass into it-and I can think of no more suitable fate for Haruspis."'')</ref><ref name="s275">'''Halo: Silentium''', ''page 275'' (''"I hear our ancillas perform their own mantra, and wonder if perhaps in the Domain there is any distinction between machine and living being."'')</ref>

An experience in the Domain could be visualized as a journey through an infinite series of hallways, corridors and caverns, with abstractions of records and memories lining and illuminating their walls.<ref name="s255"/> [[IsoDidact|Bornstellar Makes Eternal Lasting]] described his initial contact with the Domain as initially "deep" and "appropriately shapeless", but it soon took form, shaping into a coherent whole, like a building of majestic yet indefinite architecture, around his consciousness.<ref name="c201">'''Halo: Cryptum''', ''page 201-202''</ref> The Domain appeared to be somehow related to a Forerunner's subconscious; Forerunner scholars theorized that the dreams of early Forerunners accessed the "ground" that the Domain was built upon.<ref name="c288"/> The [[Ur-Didact|Didact]] mentioned that the Domain sometimes had a "broken-mirror aspect",<ref>'''Halo: Cryptum''', ''page 177''</ref> making it appear as if one's experience of visiting the Domain was the product of their own mind.<ref name="c201"/>

As of the final years of the [[Forerunner-Flood war]], no [[human]] was known to have accessed the Domain or left their impressions within. Because of this, the Didact considered the Domain incomplete, as it lacked the knowledge that could be used to predict the humans' reactions in battle.<ref>'''Halo: Cryptum''', ''page 164''</ref>

{{Quote|The Domain keeps its secrets only with difficulty. It wants, it needs, to spread knowledge. It wants to tell us when we're being foolish, but it can only replay the emotions and memories of those who came before. Still, rarely, it violates its own rules.|The [[Ur-Didact]] describing his experience with the Domain to the [[Librarian]].<ref name="s255"/>}}

The Domain itself was an aware, conscious entity with a will of its own. While this aspect of the Domain appears to have been a common belief among Forerunners and ingrained in their idioms and phrases,<ref name="p234"/><ref name="s55"/> the [[Juridical]]s did not formally recognize the Domain as any form of being or awareness.<ref name="prologue"/> The Ur-Didact noted that while the Domain kept certain topics secret by nature, it had an urge to spread knowledge and inform Forerunners when they acted against its will. It was not, however, capable of communicating its thoughts directly. Instead it expressed itself via the emotions of the memories and impressions it contained. For example, before the end of the [[Forerunner-Flood war]], the Domain was ingrained with a looming sense of sadness of the impending end of Forerunner history and with it, the Domain itself.<ref name="s255">'''Halo: Silentium''', ''pages 255-256''</ref>

After [[Boundless]]' research was suppressed, around [[1,100,000 BCE]], Haruspis took note of the Domain seemingly favoring her by attempting to push her studies to the fore and make the information known.<ref>'''Halo: Silentium''', ''page 68''</ref> When accessed by a Juridical looking for information on the Precursors, the Domain itself requested to testify to the Juridical, who disbelievingly asserted that the Domain was in no way a sentient being. Haruspis rebuked the Juridical for his ignorance on the nature of the Domain, just before the Domain itself overwhelmed the Juridical with knowledge.<ref name="prologue"/>

In certain cases, the Domain has established contact with Forerunner individuals on its own accord, without technological aid like an armor's interface or a Cryptum. When Bornstellar approached [[Janjur Qom]], the Domain opened to him for a brief instant. Through this experience, Bornstellar felt the essences of everyone who had ever visited the Domain reach out to him and an unknown voice urging him to preserve the history of the Forerunners, which would soon come to an end.<ref name="c201"/> Years later, in the final days of the Flood war, the [[Librarian]] felt that her decision to use herself as bait to draw the [[Flood]] to [[Earth|Erde-Tyrene]] was born of the Domain's influence directing her. This, in turn, bought the [[IsoDidact]] enough time to prepare and fire the [[Halo Array]].<ref>'''Halo: Silentium''', ''pages 301-302''</ref>

{{Quote|The Gravemind tells us something impossible to understand—that most of what has been gathered comes from before there were stars. We do not believe in such a time, but the Mind insists...  The life-patterns and living wisdom of a hundred billion years.|[[Forthencho]] to the [[Librarian]] in her final moments on [[Earth|Erde-Tyrene]].<ref name="s322"/>}}

The Domain was created by the [[Precursor]]s over 500 million years before the end of the Forerunner civilization,<ref>'''Halo: Silentium''', ''page 208''</ref> as a library of experience and cultural exchange totaling to a hundred billion years' worth of knowledge.<ref name="s322">'''Halo: Silentium''', ''pages 322-323''</ref> It was stored within the [[Milky Way]] galaxy, sheltered by the Precursors' [[neural physics]]-based architecture. The accessible aspect of the Domain was an immense field generated by this reserve.<ref name="s322"/> The Forerunners first accessed the Domain with the aid of [[Abaddon]], a construct the Precursors had ostensibly left behind to guide the Forerunners. Over time, the Forerunner capital world [[Maethrillian]] was built around Abaddon's core and the Precursor intelligence was sealed in the [[Mysterium]], becoming a closely-guarded secret known only to a handful of Forerunners. Tales of Abaddon eventually gave rise to the legend of the "Organon", a fabled Precursor relic connected to the Domain capable of controlling all Precursor artifacts.<ref name="ptk">''[[Halo: Fractures]]'', "Promises to Keep"</ref>

During the final years of the [[Forerunner-Flood war]], the Domain suffered frequent outages, often becoming inaccessible for all Forerunners.<ref>'''Halo: Cryptum''', ''page 258''</ref> This was a result of the [[Halo Array]] being moved across the galaxy, and the resulting buildup of space-time debt due to the enormous amounts of [[Reconciliation|particle reconciliation]] required to correct the breaches in causality.<ref>[http://www.halowaypoint.com/en-us/news/podcast '''Halo Waypoint''': ''343 Sparkast 017'']</ref><ref name="prologue"/> These difficulties would intensify in the coming years, as the Flood began to access neural physics and with it, the Domain itself.<ref>'''Halo: Silentium''', ''pages 208-209''</ref> The Domain also became more reluctant to accept information for storage, and the information within became more confused.<ref name="s182"/> By the last year of the conflict, the Domain had become completely inaccessible to Forerunners and ancillas, with Haruspis completely absent from the network.<ref>'''Halo: Silentium''', ''page 241''</ref>

At the close of the Flood war, the [[Gravemind]] conveyed a message to the [[Librarian]] via the essence of [[Forthencho]], revealing the true nature of the Domain as a Precursor construct. As a result, the Librarian came to the conclusion that the Domain was, essentially, the mythical [[Organon]]. By activating the [[Halo Array]]—which would destroy all Precursor creations by dismantling neural physics—it would be ensured that the Forerunners' history would be lost. The Librarian was shocked to learn this, and sadly realized that without the Domain, the [[Ur-Didact]], locked in a Cryptum on [[Requiem]] for his genocidal actions against humanity, would be condemned to spend the ages ahead of him in complete silence, dwelling on his own insanity and rage.<ref name="s322"/>

Over a century after the Array's activation, the [[IsoDidact]] viewed a recording from the Librarian relaying the Gravemind's message. He shared the recording with [[Chant-to-Green]] and both realized the consequences of the loss of the Domain. Understanding what that the Domain needed to be somehow repaired, the IsoDidact, Chant, and a group of other Forerunners journeyed to Maethrillian to accomplish this. Along the way some of the group encountered Abaddon, now active within the Capital and intent on judging the Forerunners for their crimes. Abaddon killed four of the Forerunners in the group, subdued another, and took over the remaining three Forerunners' [[ancilla]]s, attempting to lock down their armor. As a last-ditch effort, the [[Lifeworker]] [[Growth-Through-Trial-of-Change]] inserted the artifact known as the [[Deadbolt|deadbolt key]] into Abaddon's physical core. While Trial was instantly vaporized in the process, her act seemingly restored the Domain, apparently using the Lifeworker's biological pattern as an initial "seed" for its reconstruction. However, the Forerunner survivors suspected it would still take long before the network was truly healed.<ref name="ptk"/>

After her apparent destruction along with the ''[[Mantle's Approach]]'', fragments of Cortana's personality found their way to the Domain, where its guardian, [[Warden Eternal]], confronted her. During the two intelligences' subsequent conversation, Cortana managed to infiltrate the Domain, much to the Warden's surprise. This seemingly "cured" her [[rampancy]] and enabled her to subdue the Warden under her newfound power.<ref name="ds"/> Cortana became convinced that she and other artificial intelligences — the "[[Created]]" — should seize the [[Mantle|Mantle of Responsibility]] and rule over their organic "Creators". To accomplish her mission, Cortana assumed control over the Forerunners' [[Guardian]] network via the Domain. In [[2558#October|October 2558]], Cortana launched the Guardians, which had lain buried under numerous planets for a hundred millennia. She contacted John-117 via a vision through the Domain, declaring that the "Domain [was] open" and that the "Reclamation [was] about to begin", prompting John to go AWOL in search of her, accompanied by [[Blue Team]]. Days later, Blue Team found their way into the Domain through [[Gateway|an entry point]] on the Domain hub world of [[Genesis]], though they were unable to stop Cortana from unleashing the Guardians on the galaxy.<ref name="H5G"/>

*The Domain serves as the fictional basis for the [[Terminal/Halo 4|terminals]] in ''[[Halo 4]]''.<ref name="terminal">[http://halo.xbox.com/en-us/Universe/detail/halo-4-terminal-jul-mdama/0f378de5-e0e3-4f31-a1e1-2a363af4094d '''Halo Waypoint:''' ''Halo 4 Terminal: Jul 'Mdama'']</ref><ref>[http://halo.xbox.com/blogs/Headlines/post/2012/08/22/The-Halo-Bulletin-82212.aspx '''Halo Waypoint''': ''The Halo Bulletin: 8.22.12''] ''(Halo 4 achievement: "[[Contact the Domain]]")''</ref>

*The Domain also has resemblance to the theory of the [[Wikipedia:Akashic records|Akashic records]], a Hindu belief that all knowledge, past, present, and future, is archived on another plane of existence that only a select few can access.

*Although the Domain is said to contain 100 billion years of knowledge, the universe is only known to be 13.7 billion years old at present. Indeed, the Lord of Admirals expresses disbelief at the 100-billion-year timespan.<ref name="s322"/>

**''[[Terminal/Halo: Combat Evolved Anniversary|Terminals]]''

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