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{{Era|Forerunner}}
{{Status|Canon}}
{{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:H5-Domain.png|thumb|300px|The esoteric "quantum architecture" of the Domain.]]
 
{{Quote|This Domain is made of light. It is glorious to behold. It fills the spaces between space. There is great power here.|[[Cortana]] to [[Warden Eternal]] after infiltrating the Domain.{{Ref/Reuse|ds}}}}
 
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/Reuse|c167}}


==Overview==
==Overview==
[[File:H5G-John&Cortanadomainghost.png|thumb|right|[[Cortana]] contacting [[John-117]] through the Domain in [[2558]].|200px]]
[[File:H5G CortanaGhost.png|thumb|[[Cortana]] [[Neural physics|telepathically]] contacting [[John-117]] through the Domain in [[2558]].|300px]]
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"/>
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/Reuse|p234}}<ref name="s55">'''Halo: Silentium''', ''page 55''</ref><ref>'''Halo: Silentium''', ''page 271''</ref>{{Ref/Reuse|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>
Forerunners used the Domain via various technological systems, most commonly their [[Forerunner personal armor|personal armor]].{{Ref/Site|Id=CryptumGlossary|URL=http://halo.xbox.com/en-us/intel/related/text/cryptum-glossary/62e29c59-a3f9-4b63-af76-def71fda5459|Site=Halo Waypoint|Page=Cryptum Glossary|D=14|M=03|Y=2014|LocalArchive=Halo: Cryptum/Glossary}} 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/Reuse|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 was central in major [[Ecumene Council|Council]] proceedings, such as a political trial. Among other things, it was used by judges to store archival and accounting material,<ref>'''Halo: Cryptum''', ''page 262''</ref> assess precedent, and to verify witnesses' testimonies.<ref name="c288">'''Halo: Cryptum''', ''page 288''</ref> [[Ancilla]]s routinely accessed data within the Domain, and [[Contender-class artificial intelligence|Contender-class]] AIs such as [[Mendicant Bias]] were connected to the Domain upon their activation.<ref name="p337">'''Halo: Primordium''', ''pages 337-338''</ref>
The Domain was central in major [[Ecumene Council|Council]] proceedings, such as a political trial. Among other things, it was used by judges to store archival and accounting material,<ref>'''Halo: Cryptum''', ''page 262''</ref> assess precedent, and to verify witnesses' testimonies.<ref name="c288">'''Halo: Cryptum''', ''page 288''</ref> [[Ancilla]]s routinely accessed data within the Domain, and [[Contender-class artificial intelligence|Contender-class]] AIs such as [[Mendicant Bias]] were connected to the Domain upon their activation.<ref name="p337">'''Halo: Primordium''', ''pages 337-338''</ref>
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{{quote|The records don't always stay the same. Sometimes they change. It is not known why."<br>"Like real memories.|[[IsoDidact|Bornstellar-Makes-Eternal-Lasting]] and [[Chakas]] discussing the Domain<ref name="c167">'''Halo: Cryptum''', ''page 167-168''</ref>}}
{{quote|The records don't always stay the same. Sometimes they change. It is not known why."<br>"Like real memories.|[[IsoDidact|Bornstellar-Makes-Eternal-Lasting]] and [[Chakas]] discussing the Domain<ref name="c167">'''Halo: Cryptum''', ''page 167-168''</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 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/Reuse|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>
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/Reuse|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"/>
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/Reuse|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/Reuse|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/Reuse|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>
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> However, much like the Domain would show retrocausal effects of the Halo array's [[Great Purification|pulse]] prior to its firing, when Bornstellar was imprisoned by the [[Master Builder]] at [[Janjur Qom]], the Domain opened to him briefly and he heard a voice saying, "Those who are ignorant of history are doomed to repeat it". Bornstellar noted to himself that the voice may not have been Forerunner. The quote is attributed to 19th-20th century [[human]] philosopher [[Wikipedia:George Santayana|George Santayana]].{{Ref/Book|Id=Cry|Halo: Cryptum|25}}


===Self-awareness===
===Self-awareness===
{{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"/>}}
{{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/Reuse|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>
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/Reuse|p234}}{{Ref/Reuse|s55}} the [[Juridical]]s did not formally recognize the Domain as any form of being or awareness.{{Ref/Reuse|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"/>
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/Reuse|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>
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/Reuse|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>


==History==
==History==
{{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"/>}}
{{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/Reuse|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>
The Domain was used 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/Reuse|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 spacetime 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/Reuse|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/Reuse|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>


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/Reuse|s322}}


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"/>
When Halo's destructive pulse was fired, the Domain suffered extensive damage and went silent. The pulse blew through the Domain's quantum expanse, destroying billions of years worth of information and much of the delicate neural lace that entwined everything together. Many things happened in that instant, including the void being forced into existence, nearly all of those Forerunners who died in Halo's wake were shut out, and every Haruspis inside and outside of the Domain was annihilated. The Domain became like a wounded animal, throwing out the only meager defenses that it had to protect itself which included the void that acted as an inexhaustible quantum barrier.{{Ref/Novel|Id=Epi14|Epi|14}}


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"/>
Over a century after the Array's activation, [[Bornstellar Makes Eternal Lasting]], formerly 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 that the Domain needed to be somehow repaired, Bornstellar, 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/Reuse|ptk}} The Domain needed a Lifeworker's unique life template to reawaken and heal, but it would take a long time to do so due to the extent of the damage that the Domain had suffered. As a result, the repository used millions of Haruspis essences to create the [[Warden Eternal]] as a protector, although the Warden's devotion to the Domain eventually turned into obession instead. As the Domain healed, the Warden was sealed outside to guard the gateways.{{Ref/Reuse|Epi14}}
 
[[File:Halo 5 - Sad Warden.jpg|thumb|250px|The [[Warden Eternal]], protector of the Domain after the [[Great Purification]] and last remnant of the [[Haruspis]] [[rate]].]]
 
Having depleted much of its energy to create the void, the Domain required nourishment in the form of life's experiences with the Cosmos to heal. It wanted to accept all knowledge, to store and protect it, and it sought diversity of many of life's interactions, not just Forerunners. However, the records lost when the Halo Array fired were significant which, combined with the strength diverted to create the void, the Domain was unable and perhaps unwilling to welcome in those waiting in its outer boundaries. This, combined with the Warden Eternal, in its hyper-diligence, refusing to allow in the trapped Forerunner essences, much less the human ones, had inadvertently kept the Domain from properly healing and kept it weak.{{Ref/Novel|Id=Epi23|Epi|23}}


Over 100,000 years later the Domain was accessed once again. In [[2557]], during their time on [[Requiem]], [[Master Chief Petty Officer]] [[John-117]] and [[Cortana]] were able to partially access the Domain via local terminal nodes, learning more about the history of the [[Ur-Didact|Didact]] and the Librarian. However, Cortana mentioned that the terminal was "caught in a loop" trying to access the Domain,<ref>'''Halo 4''', campaign level ''Requiem''</ref> leaving it unclear whether the fragments actually originated from the Domain itself.
Over 100,000 years later the Domain was accessed once again. In [[2557]], during their time on [[Requiem]], [[Master Chief Petty Officer]] [[John-117]] and [[Cortana]] were able to partially access the Domain via local terminal nodes, learning more about the history of the [[Ur-Didact|Didact]] and the Librarian. However, Cortana mentioned that the terminal was "caught in a loop" trying to access the Domain,<ref>'''Halo 4''', campaign level ''Requiem''</ref> leaving it unclear whether the fragments actually originated from the Domain itself.


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"/>
[[File:HTMCC-H4 Terminal 5.jpg|thumb|left|250px|The [[Terminal (Halo 4)|terminals]] Master Chief accessed in [[2557]].]]
 
After being rescued from [[Geranos-a]] in 2557, [[343 Guilty Spark]] attempted to access the Domain, but was blocked by [[Catalog]] who revealed he had also done the same to the Ur-Didact. Later, after [[Mission to Mount Kilimanjaro|finding]] a personality imprint of the [[Librarian]], Spark requested that she send him to the Domain to be with his friends after he was talked out of bringing them back to life. The Librarian warned Spark that the only thing left of [[Riser]] and [[Vinnevra]] in the Domain were echoes, "experiences remembered through the eyes of my kind, nothing more." The Librarian stated that Spark was not meant to dwell on the past and live in the halls of living memory and warned that in the Domain, "the bad lives alongside the good." The Librarian helped Spark to see that the friends he sought for 100,000 years were amongst the ''[[Ace of Spades]]'' crew and Spark gave up his quest. Spark later admitted to [[Rion Forge]] that he had sought the Librarian to access the Domain and either bring his friends back as ''[[geas]]'' or to join them.<ref>'''[[Halo: Renegades]]'''</ref>
 
Sometime after his defeat by John on July 26, the Ur-Didact was imprisoned in the Domain,<ref name="Doll">'''Halo 5: Guardians''' [[Forge]] [[Hidden toy|Didact toy]] description: ''Not all visitors to the Domain are strangers.''</ref> reflecting on memories of his wife.<ref>'''[[Halo: Adult Coloring Book]]''', Page 41 ''After his defeat by the Master Chief and imprisonment in the Domain, the Didact reflects on memories of his wife, the Librarian.''</ref>
 
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/Reuse|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/Reuse|H5G}}
 
After being composed, the [[Ur-Didact|Didact]] sought to free the Domain from the Created's control with the help of the [[Haruspis]] and the millions of Forerunner and human essences who had been kept out of the Domain by the Warden Eternal since the Halo Array's firing. Using a ritual devised by Abaddon long ago, the Haruspis was able to draw all of the iterations of the Warden Eternal located in the Domain and its outer boundaries into one body, rendering him vulnerable to the Didact. With the help of a distraction from the other essences, the Didact was able to destroy the Warden with a quantum weapon called a [[Riftblade]], the only weapon capable of destroying essences in the Domain. While some iterations of the Warden may have been trapped in the physical world and thus survived, they would be unable to reconnect with his body or the Domain and what remained of the Warden Eternal would go "quite mad," permanently neutralizing the threat of the Warden Eternal.{{Ref/Novel|Id=Epi25|Epi|25}}
 
[[File:HaloEpitaph Cover Full.jpg|thumb|right|300px|The [[Didact]] wandering the way station outside the Domain following his [[Mind transfer|composition]].]]
 
With the Warden gone, the Didact led the Forerunner and human essences into the Domain, allowing humanity into the ancient repository for the very first time. The Domain was strengthened by this and began to transform from the bleak landscape that it had become. The strengthening of the Domain allowed it to evict the Created, although a few rogue AIs and splinters remained hiding in the interior to be hunted down by the essences. The Didact had the Haruspis seal the Gateway and all links to the Domain in the physical world so that no one could ever again abuse its power and resources as the Created had. The Didact intended for the Domain to be forgotten, returned to its enigmatic, mysterious and unattainable state. In time, the Domain would sink back into the shadows and become nothing more than a story, an obscure myth, perhaps eventually fading from collective memory altogether until such a time as it willed otherwise.{{Ref/Novel|Id=Epi26|Epi|26}}{{Ref/Novel|Id=Epi27|Epi|27}}


==Trivia==
==Trivia==
*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 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 bears conceptual similarities to the [http://hyperioncantos.wikia.com/wiki/The_Void_Which_Binds Void Which Binds], a quantum information storage medium featured in Dan Simmons' science-fiction series ''[[Wikipedia:Hyperion Cantos|The Hyperion Cantos]]''.
*The Domain bears conceptual similarities to the [http://hyperioncantos.wikia.com/wiki/The_Void_Which_Binds Void Which Binds], a quantum information storage medium featured in Dan Simmons' science-fiction series ''[[Wikipedia:Hyperion Cantos|The Hyperion Cantos]]''.
*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.
*The Domain also has resemblance to the theory of the [[Wikipedia:Akashic records|Akashic records]], a Theosophy 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"/>
*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. However, it may also be in reference to the cumulative sum total of all the knowledge in the Domain; that is, it would take 100 billion years to view all the knowledge it has compiled from all the living beings it has connected with across the millennia. {{Ref/Reuse|s322}}
 
==Gallery==
<gallery>
File:H4-RequiemTerminal-ScanRender.png|The [[Z-9930 Information Vector Console]], a type of Forerunner technology used to retrieve information from the Domain.
File:H5G Genesis Gate.png|The [[Gateway]], a Forerunner structure on [[Genesis]] that allowed access to the Domain.
File:H5G - Genesis summit.jpg|The Forerunner structure inside the Domain accessed via the Gateway.
File:H5-DomainSkybox.png|Some form of information latticework in the far distance within the Domain.
File:H5-ForerunnerDomain.png|Forerunner technology inside the Domain.
File:H5-DomainForerunnerTech.png|More Forerunner technology inside the Domain.
File:H5-DomainNexus1.png|Some type of nexus within the Domain, accessed through the [[Genesis]] [[Gateway|gateway]].
File:HTfS dominion splinter.png|thumb|Cortana distracts the Warden Eternal and infiltrates the Domain.
File:H3 Epitaph Tower.jpg|A replica of [[Mendicant Bias]]' [[Epitaph|tomb]] and the wasteland surrounding it existed just outside the Domain following the [[Great Purification]].
</gallery>


==List of appearances==
==List of appearances==
{{col-begin}}
{{col-2}}
*''[[Halo: Cryptum]]'' {{1st}}
*''[[Halo: Cryptum]]'' {{1st}}
*''[[Halo: Combat Evolved Anniversary]]''
*''[[Halo: Combat Evolved Anniversary]]''
**''[[Terminal/Halo: Combat Evolved Anniversary|Terminals]]''
**''[[Terminal (Halo: Combat Evolved Anniversary)|Terminals]]''
*''[[Halo: Primordium]]''
*''[[Halo: Primordium]]''
*''[[Halo 4]]''
*''[[Halo 4]]''
Line 64: Line 100:
*''[[Halo: Fractures]]''
*''[[Halo: Fractures]]''
**''[[Promises to Keep]]''
**''[[Promises to Keep]]''
{{col-2}}
*''[[Halo: Tales from Slipspace]]''
*''[[Halo: Tales from Slipspace]]''
**''[[Dominion Splinter]]''
**''[[Dominion Splinter]]''
*''[[Halo: Renegades]]'' {{Mo}}
*''[[Halo: Shadows of Reach]]'' {{Mo}}
*''[[Halo: Divine Wind]]'' {{Mo}}
*''[[Halo: Outcasts]]'' {{Mo}}
*''[[Halo: Sunrise on Sanghelios]]'' {{Mo}}
*''[[Halo: Epitaph]]''
*''[[Halo: Empty Throne]]''
{{col-end}}


==Sources==
==Sources==
{{Reflist|2}}
{{Ref/Sources|2}}
 
[[Category:Precursor]]
[[Category:Precursor]]
[[Category:Forerunner culture]]
[[Category:Forerunner culture]]

Latest revision as of 12:55, November 25, 2024

Quantum architecture in the Domain.
The esoteric "quantum architecture" of the Domain.

"This Domain is made of light. It is glorious to behold. It fills the spaces between space. There is great power here."
— Cortana to Warden Eternal after infiltrating the Domain.[1]

The Domain is an esoteric quantum information repository that was once used by the Forerunners to contain vast amounts of knowledge, most notably their cultural and ancestral records.[2]

Overview[edit]

Cortana telepathically contacting John-117 through the Domain in 2558.

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' religious beliefs.[3][4][5][6]

Forerunners used the Domain via various technological systems, most commonly their personal armor.[7] While the artificial world of Genesis served as a primary link into the Domain,[8] connecting to the Domain was possible for mature Forerunners anywhere within the Forerunners' sphere of influence, regardless of distance.[2][9] 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.[10] Dedicated terminals were also sometimes used by ancillas to connect to the Domain when on Forerunner worlds or installations.[11]

The Domain was central in major Council proceedings, such as a political trial. Among other things, it was used by judges to store archival and accounting material,[12] assess precedent, and to verify witnesses' testimonies.[13] Ancillas routinely accessed data within the Domain, and Contender-class AIs such as Mendicant Bias were connected to the Domain upon their activation.[14]

Haruspis and its associates were Forerunners dedicated to studying the Domain. Haruspices also sought out specific information within the Domain on a Forerunner's request.[15] The construct known as the Warden Eternal also served as a protector for the Domain.[16][1]

Mechanics[edit]

"The records don't always stay the same. Sometimes they change. It is not known why."
"Like real memories."
— Bornstellar-Makes-Eternal-Lasting and Chakas discussing the Domain[2]

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.[17] These changes were regarded as sacred, and were never reversed or corrected.[2] Over long periods of time, older information in the Domain ultimately became unintelligible to all Forerunners, even Haruspis.[18] Due to these anomalies, the Domain was not commonly used as means of communication; messages could be inexplicably altered on the way.[19]

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.[20] The Forerunners also viewed the Domain as a form of afterlife, believing that the "essences" of individuals passed into the Domain upon death.[3][21][6]

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.[20] 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.[22] 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.[13] The Didact mentioned that the Domain sometimes had a "broken-mirror aspect",[23] making it appear as if one's experience of visiting the Domain was the product of their own mind.[22]

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.[24] However, much like the Domain would show retrocausal effects of the Halo array's pulse prior to its firing, when Bornstellar was imprisoned by the Master Builder at Janjur Qom, the Domain opened to him briefly and he heard a voice saying, "Those who are ignorant of history are doomed to repeat it". Bornstellar noted to himself that the voice may not have been Forerunner. The quote is attributed to 19th-20th century human philosopher George Santayana.[25]

Self-awareness[edit]

"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.[20]

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,[3][4] the Juridicals did not formally recognize the Domain as any form of being or awareness.[15] 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.[20]

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.[26] 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.[15]

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.[22] 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 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.[27]

History[edit]

"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 Erde-Tyrene.[28]

The Domain was used by the Precursors over 500 million years before the end of the Forerunner civilization,[29] as a library of experience and cultural exchange totaling to a hundred billion years' worth of knowledge.[28] 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.[28] 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.[30]

During the final years of the Forerunner-Flood war, the Domain suffered frequent outages, often becoming inaccessible for all Forerunners.[31] This was a result of the Halo Array being moved across the galaxy, and the resulting buildup of spacetime debt due to the enormous amounts of particle reconciliation required to correct the breaches in causality.[32][15] These difficulties would intensify in the coming years, as the Flood began to access neural physics and with it, the Domain itself.[33] The Domain also became more reluctant to accept information for storage, and the information within became more confused.[17] By the last year of the conflict, the Domain had become completely inaccessible to Forerunners and ancillas, with Haruspis completely absent from the network.[34]

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.[28]

When Halo's destructive pulse was fired, the Domain suffered extensive damage and went silent. The pulse blew through the Domain's quantum expanse, destroying billions of years worth of information and much of the delicate neural lace that entwined everything together. Many things happened in that instant, including the void being forced into existence, nearly all of those Forerunners who died in Halo's wake were shut out, and every Haruspis inside and outside of the Domain was annihilated. The Domain became like a wounded animal, throwing out the only meager defenses that it had to protect itself which included the void that acted as an inexhaustible quantum barrier.[35]

Over a century after the Array's activation, Bornstellar Makes Eternal Lasting, formerly 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 that the Domain needed to be somehow repaired, Bornstellar, 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' ancillas, 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 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.[30] The Domain needed a Lifeworker's unique life template to reawaken and heal, but it would take a long time to do so due to the extent of the damage that the Domain had suffered. As a result, the repository used millions of Haruspis essences to create the Warden Eternal as a protector, although the Warden's devotion to the Domain eventually turned into obession instead. As the Domain healed, the Warden was sealed outside to guard the gateways.[35]

The Warden Eternal, protector of the Domain after the Great Purification and last remnant of the Haruspis rate.

Having depleted much of its energy to create the void, the Domain required nourishment in the form of life's experiences with the Cosmos to heal. It wanted to accept all knowledge, to store and protect it, and it sought diversity of many of life's interactions, not just Forerunners. However, the records lost when the Halo Array fired were significant which, combined with the strength diverted to create the void, the Domain was unable and perhaps unwilling to welcome in those waiting in its outer boundaries. This, combined with the Warden Eternal, in its hyper-diligence, refusing to allow in the trapped Forerunner essences, much less the human ones, had inadvertently kept the Domain from properly healing and kept it weak.[36]

Over 100,000 years later the Domain was accessed once again. In 2557, during their time on Requiem, Master Chief Petty Officer John-117 and Cortana were able to partially access the Domain via local terminal nodes, learning more about the history of the Didact and the Librarian. However, Cortana mentioned that the terminal was "caught in a loop" trying to access the Domain,[37] leaving it unclear whether the fragments actually originated from the Domain itself.

The fifth Terminal in Halo 4 campaign level Shutdown.
The terminals Master Chief accessed in 2557.

After being rescued from Geranos-a in 2557, 343 Guilty Spark attempted to access the Domain, but was blocked by Catalog who revealed he had also done the same to the Ur-Didact. Later, after finding a personality imprint of the Librarian, Spark requested that she send him to the Domain to be with his friends after he was talked out of bringing them back to life. The Librarian warned Spark that the only thing left of Riser and Vinnevra in the Domain were echoes, "experiences remembered through the eyes of my kind, nothing more." The Librarian stated that Spark was not meant to dwell on the past and live in the halls of living memory and warned that in the Domain, "the bad lives alongside the good." The Librarian helped Spark to see that the friends he sought for 100,000 years were amongst the Ace of Spades crew and Spark gave up his quest. Spark later admitted to Rion Forge that he had sought the Librarian to access the Domain and either bring his friends back as geas or to join them.[38]

Sometime after his defeat by John on July 26, the Ur-Didact was imprisoned in the Domain,[39] reflecting on memories of his wife.[40]

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.[1] Cortana became convinced that she and other artificial intelligences — the "Created" — should seize the 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 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 an entry point on the Domain hub world of Genesis, though they were unable to stop Cortana from unleashing the Guardians on the galaxy.[8]

After being composed, the Didact sought to free the Domain from the Created's control with the help of the Haruspis and the millions of Forerunner and human essences who had been kept out of the Domain by the Warden Eternal since the Halo Array's firing. Using a ritual devised by Abaddon long ago, the Haruspis was able to draw all of the iterations of the Warden Eternal located in the Domain and its outer boundaries into one body, rendering him vulnerable to the Didact. With the help of a distraction from the other essences, the Didact was able to destroy the Warden with a quantum weapon called a Riftblade, the only weapon capable of destroying essences in the Domain. While some iterations of the Warden may have been trapped in the physical world and thus survived, they would be unable to reconnect with his body or the Domain and what remained of the Warden Eternal would go "quite mad," permanently neutralizing the threat of the Warden Eternal.[41]

Cover art for the book.
The Didact wandering the way station outside the Domain following his composition.

With the Warden gone, the Didact led the Forerunner and human essences into the Domain, allowing humanity into the ancient repository for the very first time. The Domain was strengthened by this and began to transform from the bleak landscape that it had become. The strengthening of the Domain allowed it to evict the Created, although a few rogue AIs and splinters remained hiding in the interior to be hunted down by the essences. The Didact had the Haruspis seal the Gateway and all links to the Domain in the physical world so that no one could ever again abuse its power and resources as the Created had. The Didact intended for the Domain to be forgotten, returned to its enigmatic, mysterious and unattainable state. In time, the Domain would sink back into the shadows and become nothing more than a story, an obscure myth, perhaps eventually fading from collective memory altogether until such a time as it willed otherwise.[42][43]

Trivia[edit]

  • The Domain serves as the fictional basis for the terminals in Halo 4.[44][45]
  • The Domain bears conceptual similarities to the Void Which Binds, a quantum information storage medium featured in Dan Simmons' science-fiction series The Hyperion Cantos.
  • The Domain also has resemblance to the theory of the Akashic records, a Theosophy 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. However, it may also be in reference to the cumulative sum total of all the knowledge in the Domain; that is, it would take 100 billion years to view all the knowledge it has compiled from all the living beings it has connected with across the millennia. [28]

Gallery[edit]

  • The Z-9930 Information Vector Console, a type of Forerunner technology used to retrieve information from the Domain.

    The Z-9930 Information Vector Console, a type of Forerunner technology used to retrieve information from the Domain.

  • The Gateway, a Forerunner structure on Genesis that allowed access to the Domain.

    The Gateway, a Forerunner structure on Genesis that allowed access to the Domain.

  • The Forerunner structure inside the Domain accessed via the Gateway.

    The Forerunner structure inside the Domain accessed via the Gateway.

  • Some form of information latticework in the far distance within the Domain.

    Some form of information latticework in the far distance within the Domain.

  • Forerunner technology inside the Domain.

    Forerunner technology inside the Domain.

  • More Forerunner technology inside the Domain.

    More Forerunner technology inside the Domain.

  • Some type of nexus within the Domain, accessed through the Genesis gateway.

    Some type of nexus within the Domain, accessed through the Genesis gateway.

  • Cortana distracts the Warden Eternal and infiltrates the Domain.

    Cortana distracts the Warden Eternal and infiltrates the Domain.

  • A replica of Mendicant Bias' tomb and the wasteland surrounding it existed just outside the Domain following the Great Purification.

    A replica of Mendicant Bias' tomb and the wasteland surrounding it existed just outside the Domain following the Great Purification.

List of appearances[edit]

Sources[edit]

  1. ^ a b c Halo: Tales from Slipspace, "Dominion Splinter"
  2. ^ a b c d Halo: Cryptum, page 167-168
  3. ^ a b c 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")
  4. ^ a b Halo: Silentium, page 55
  5. ^ Halo: Silentium, page 271
  6. ^ a b 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.")
  7. ^ Halo Waypoint, Cryptum Glossary (Retrieved on Mar 14, 2014) [local archive] [external archive]
  8. ^ a b Halo 5: Guardians
  9. ^ Halo: Cryptum, page 13
  10. ^ Halo: Silentium, page 255
  11. ^ Halo 4: The Essential Visual Guide, page 129
  12. ^ Halo: Cryptum, page 262
  13. ^ a b Halo: Cryptum, page 288
  14. ^ Halo: Primordium, pages 337-338
  15. ^ a b c d Halo: Silentium, page 13-15
  16. ^ Halo Waypoint: Warden Eternal
  17. ^ a b Halo: Silentium, page 182
  18. ^ Halo: Silentium, page 58
  19. ^ Halo: Cryptum, page 125
  20. ^ a b c d Halo: Silentium, pages 255-256
  21. ^ 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.")
  22. ^ a b c Halo: Cryptum, page 201-202
  23. ^ Halo: Cryptum, page 177
  24. ^ Halo: Cryptum, page 164
  25. ^ Halo: Cryptum, chapter 25
  26. ^ Halo: Silentium, page 68
  27. ^ Halo: Silentium, pages 301-302
  28. ^ a b c d e Halo: Silentium, pages 322-323
  29. ^ Halo: Silentium, page 208
  30. ^ a b Halo: Fractures, "Promises to Keep"
  31. ^ Halo: Cryptum, page 258
  32. ^ Halo Waypoint: 343 Sparkast 017
  33. ^ Halo: Silentium, pages 208-209
  34. ^ Halo: Silentium, page 241
  35. ^ a b Halo: Epitaph, chapter 14
  36. ^ Halo: Epitaph, chapter 23
  37. ^ Halo 4, campaign level Requiem
  38. ^ Halo: Renegades
  39. ^ Halo 5: Guardians Forge Didact toy description: Not all visitors to the Domain are strangers.
  40. ^ Halo: Adult Coloring Book, Page 41 After his defeat by the Master Chief and imprisonment in the Domain, the Didact reflects on memories of his wife, the Librarian.
  41. ^ Halo: Epitaph, chapter 25
  42. ^ Halo: Epitaph, chapter 26
  43. ^ Halo: Epitaph, chapter 27
  44. ^ Halo Waypoint: Halo 4 Terminal: Jul 'Mdama
  45. ^ Halo Waypoint: The Halo Bulletin: 8.22.12 (Halo 4 achievement: "Contact the Domain")
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