They create these
high dimensional bridges called Star Road
Star roads, also known as unbending filaments, were neural physics-based megastructures created by the Precursors.
www.halopedia.org
These Star Roads are used to link their star systems, and they can also move them.
We were overtaken by the vast weave of reawakened star roads, spinning and churning like serpents in a huge nest— the graceful and haunting structures of our deep past now made fell and horrifying. The tangle looped around Uthera, deftly avoiding intersecting the planet. Then, incredibly, the planet itself began to crack and shrink, as if squeezed by a huge fist. The resulting shift in our orbit thrust us farther into the mass. An entire planet was being destroyed— just to draw us closer. “This is the way Precursors moved stars,” Maker whispered.
Source: Halo: Silentium
The Star Roads are stated to be unbreakable, even by Forerunner standards.
....Dreamers and makers whose minds transcended many realms, they seeded uncountable worlds with the building blocks of life, built cyclopean laboratories made of crystallized reality, forged roads through alternate dimensions to link their great works, and then began a grand experiment to create and uplift new sentient species...
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Before they vanished, the Precursors reshaped the galaxy with tools of metal, flesh, and energy that were linked across space and time using neural physics... They sailed between worlds in vessels guided by knowledge engines, but also waled on the star roads, bridges of unbreakable filaments that wove in and out of the deepest layers of slipspace.
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Eldest of the sapient minds of the Milky Way. They had infinite forms, many voices, and singular purpose. The realms they grew and the life they crafted continue on, though they themselves have sunk into unreachable depths.
Source: Halo: Warfleet
The Precursors are said to hold over 100 billion years worth of knowledge and are stated to originate from a time before stars.
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.
Source: Halo: Silentium
The Star Roads are but shadows of the true structures in real space. Furthermore, the Star Roads are stated to be made of strange matter, which means that the pressure applied to Star Roads constantly holding them together is equal to or exceeds those found inside neutron stars. Star Roads are also stated to exist in "unreality".
Untouchable and perpetual filament of neurophysical energy woven between dimensions by the Precursors. Their shadows in realspace took the appearance of multi-kilometer-thick filaments of strange matter. Rendered inert with the passing of the Precursors, the Gravemind reactivated the star roads to transport plague fleets, moved filaments to crush Forerunner fortifications, and dredged up forgotten artifacts anchored in the deepest layers of unreality to cleanse entire star clusters of life the star roads splintered when Halo fired.
Source: Halo: Warfleet
en.wikipedia.org
The author of the Forerunner Saga books, Greg Bear, confirmed that the Precursors could simply combine thought and matter to create Neural Physics objects.
Hey Greg! I had some questions regarding Neural Physics, and the Flood's ability to interact with it. I'm super fascinated with this stuff, and its been eating away at me for some time, so I'm glad I found this discussion board.
In the Forerunner trilogy, we see the Flood use what I assume to be nearly every facet of it there is. However, I was wondering if the Flood had the ability to create objects as well? It was noted that they took control of the Star Roads, but also that they were able to use it for superluminal travel. Were the Flood able to use Neural Physics to the same degree as the Precursors, or less so?
My other question is with regards to how Neural Physics based objects are brought into existence. It was said that the basic beliefs/principles were that the mind was connected to inert matter (I think,) and that the universe was a living "thing". To me this implies that they (Precursors,) simply brought these Neural Physics objects into existence with their minds, but I was wondering if you could shed some light as to your intentions there?
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Excellent questions! To dig out the answers I'll have to resort to a brief survey of science fictional ideas, including my own in other novels, such as HEADS and MOVING MARS, which exploit a far-out theory of physics that combines information theory with particle theory, making up "particle-bit structure."
Precursors (so to speak) to these notions may be found in CITY AND THE STARS, by Arthur C. Clarke, where inhabitants of a city a billion years in the future can materialize anything they want through a kind of city-wide transporter system just by thinking. Interestingly, a similar idea is taken to extremes in the film FORBIDDEN PLANET, where the subconscious minds of the Krell take over such abilities and destroy their civilization. Wonder if Sir Arthur was irritated by this homage/ swipe? At any rate, FP added substantially to the mythos.
Source: Greg Bear Discussion Board
The Precursors are stated to have created and moved galaxies.
"That's the power the Precursors once had...isn't it? They shaped and moved galaxies!"
Source: Halo: Silentium
The Precursors have intergalactic travel capabilities and could artificially accelerate the evolution and development of life.
As the [Forerunners] had no examples of civilizations with technological accomplishment greater than their own—with the exception of the Precursors—this is a theoretical ceiling. They can travel intergalactically and accelerate evolution of intelligent life. These may be creatures of legend.
Source: Bestiarum
Waypoint - The official site for all Halo news, including information and media on the games, books and merchandise
web.archive.org
The Gravemind, an intelligent Flood, could make the AI Cortana feel pain and gain the sense of smell. Some sort of reality-warping maybe, or high control and understanding of technology or space-time.
That’s not just an analysis of air composition. I haven’t got the right sensors on this station. And . . . I can really smell it. I shouldn’t be able to smell, not like an organic, not this sense of . . .
Smell.
It was something she‘d never experienced before, even though she knew exactly what it was. She could run diagnostic tests on air samples if she had a link to filters and a gas chromatograph. But that just told her what was in the air in stark chemical terms, and that wasn‘t the same as what she was experiencing now. This was emotional and unfathomable. The smell tugged at memories. It was a flesh-and-blood thing. She felt the world as if she was in another body, anorganic body.
Cortana scooped up a handful of decaying leaves—some clammy, some paper-dry skeletal lace, some recently fallen ones still springy with sap—and with them the clear memory of being someone else. It was a second of heady disorientation. For a moment, a welter of glorious new information about a world of stilt-cities, creatures she‘d never seen before, and lives she'd never lived poured into her. She devoured it. So much language and culture, never seen by humankind before.
Source: Halo: Human Weakness
The Star Roads are stated to have sub-light speeds of around 0.33c.
“Unknown construct approaching at one-third light-speed,” it said. “Instructions!” Sharp still refused to believe. The expanded gray circle outlined an irregular ball of coiling and twisting star roads, Precursor artifacts that had been around for as long as any Forerunner could remember— unchanging, unresponsive. Revered by both Forerunners and humans as the remnants of our Creation. “It’s going to arrive here about the same time as those ships,” Maker said. “Can we outrun it?” I asked. “No,” she said.
Source: Halo: Silentium
The Star Roads could easily destroy entire star systems.
I have watched nine star systems sliced to dust and glowing rubble by star roads— and they used to trace such pretty curves between our worlds.
Source: Halo: Silentium
The Precursor AI, Abbadon, could disintegrate fully armored Forerunners at will.
I shall make you suffer. And you have taught me how best to do that.” “Our armor,” Trial said. “That’s how it knew about the crawlers.” And our presence at the trial, Bornstellar thought sickly. And the deadbolt key . . . “I shall make you suffer,” it said again, “and I shall be remade.” It lifted its arms, spread its wide, violet, graceful wings. Beside Bornstellar, Voices lifted his rifle, and then crumbled to indigo dust. Finder cried out in horror, and then he too was gone. The celestial figure turned its gaze upon Bornstellar. He braced himself, but Abaddon seemed to make a decision. Its eerily beautiful face twisted in pain.
Source: Halo: Fractures: Extraordinary Tales from the Halo Canon
It is stated the Gravemind as the Primordial had brought entire galaxies to an end. Whether this means eradicating entire galaxies or outright destroying them remains unclear.
“This we were told by the Gravemind, the greatest of them, who has consumed ten thousand planets and brought entire galaxies to an end. This we were told…”
Source: Halo: Silentium
The Precursors Star Roads can shut down Forerunner ship weaponry and shields.
"...Suppression fields of enormous power appear to be magnified by local star roads, which are taking on new and startling configurations."
"Our weapons are no longer usable."
"Hundreds of infected ships have attempted to blast or cut into our own. With protective fields suppressed, we may not be able to withstand them much longer."
Source: Halo: Silentium
The conversation between the Didact and the Last Precursor, the Primordial, seems to imply the Precursors could come back from death in new biological forms or their previous forms were but avatars of their
higher dimensional selves.
“It was long ago decided. Forerunners will never bear the Mantle.”
“Decided how?”
“Through long study. The decision is final. Humans will replace you. Humans will be tested next.”
Was the Primordial giving me a message of hope? Doom for our enemies . . . ascendency and triumph for humanity?
“Is that to be our punishment?” the Didact asked, his tone subdued—dangerous.
“It is the way of those who seek out the truth of the Mantle. Humans will rise again in arrogance and defiance. The Flood will return when they are ripe—and bring them unity.”
“But most humans are immune,” the Didact said. Then he seemed to understand, and lowered his great head between his shoulders like a bull about to charge. “Can the Flood choose to infect, or not to infect?”
The wide, flat head canted to one side, as if savoring some demonic irony.
“No immunity. Judgment. Timing.”
“Then why turn Mendicant Bias against its creators, and encourage the Master Builder to torture humans? Why allow this cruelty? Are you the fount of all misery?” the Didact cried out.
The Captive’s strange, ticking voice continued. “Misery is sweetness,” it said, as if confiding a secret. “Forerunners will fail as you have failed before. Humans will rise. Whether they will also fail has not been decided.”
“How can you control any of this? You’re stuck here—the last of your kind!”
“The last of this kind.”
But the Captive still managed to speak.
“We are the Flood. There is no difference. Until all space and time are rolled up and life is crushed in the folds . . . no end to war, grief, or pain. In a hundred and one thousand centuries . . . unity again, and wisdom. Until then—sweetness.”
Source: Halo: Primodium
This is evident of the Precursors having innumerable different forms in the past.
"The Precursors lived in many shapes, flesh and spirit, primitive and advanced, spacefaring and locked to their worlds... Evolved over and over again, died away, were reborn, explored, and seeded many galaxies... This I was told. I understand little."
Source: Halo: Silentium
Halo: Warfleet states they have infinite forms. It also states that the Star Roads wove in and out of the deepest layers of Slipspace.
....Dreamers and makers whose minds transcended many realms, they seeded uncountable worlds with the building blocks of life, built cyclopean laboratories made of crystallized reality, forged roads through alternate dimensions to link their great works, and then began a grand experiment to create and uplift new sentient species...
-------------------------------------------------------------
Before they vanished, the Precursors reshaped the galaxy with tools of metal, flesh, and energy that were linked across space and time using neural physics... They sailed between worlds in vessels guided by knowledge engines, but also waled on the star roads, bridges of unbreakable filaments that wove in and out of the deepest layers of slipspace.
-------------------------------------------------------------
Eldest of the sapient minds of the Milky Way. They had infinite forms, many voices, and singular purpose. The realms they grew and the life they crafted continue on, though they themselves have sunk into unreachable depths.
Source: Halo: Warfleet
Cortana states that Slipspace is
11 dimensional.
Had it seen what she had done? Had it understood what she'd just accomplished? And if so, why declare it a "heresy"? True, manipulating eighty-eight stochastic variables in eleven-dimensional space-time was not child's play... but it was possible that the other AI would be able to follow her calculations.
Source: Halo: First Strike
The Precursors mastery over Slipspace is further established by their ability to place Forerunner vessels in other universes while the vessels are in Slipspace.
We've entered orbit around an unexploited gas giant and are using it as a shield. All feasible orbital solutions for leaving this system are blockaded.… "We are surrounded by over a thousand Forerunner vessels of all classes."
"More alarming, we cannot open slipspace portals; three of our ships have ‘echoed’ from attempted transits and show powerful causality mutations. Some clearly were caught between our continuum and incomplete, inefficient universes."
Source: Halo: Silentium
The Precursors FTL technology works by having the vessels travel through multiple different universes, if not the multiverse.
The Falchion is informed of a high density of enemy vessels arriving through neural physics transmission. they materialize slowly, characteristic of Precursor transit, shedding multiverse residues at a rate that makes them temporarily vulnerable to the Falchion's immediate response.
Source: Halo: Silentium