"Living metal. Incomprehensible intelligence."
The Vex are architects of ancient and complex structures thought to be buried within every celestial body. Linked by a network unlike any on Earth, they operate in unison, directed by a single unfathomable purpose.
"All their joints turning together. Moving together. Towards you."
The Goblin is the basic unit in the vast computational network that is the Vex. Shattering the large, fan-shaped head does not seem to cause lasting damage but sends the Goblin into a crackling frenzy.
"The air by my cheek twanged twice, stinking of ozone, before I saw it."
Specialized for sniping, this lean, tough Vex model is fitted with improved optics and acute sensors in its horns. Like the Goblin, the Hobgoblin contains a milky radiolarian fluid.
Attacking a Hobgoblin often triggers a defensive reflex - the Hobgoblin seals itself in stasis and waits for help.
"It swam back and forth through the air, spinning, the single red eye looking - I realized - for me."
The fastest and most mobile Vex, the Harpy is an airborne unit often deployed in flocks on patrols and scouting missions. They must stop and stabilize before attacking.
"I thought it was at a safe distance. I was wrong."
Minotaurs pack brutal heat, but most of their processing power is devoted to the physics of building massive Vex complexes, suspected to extend through multiple dimensions. Minotaur models are thicker and harder to crack than any other bipedal Vex, and they use their teleportation capability aggressively.
"Our shots dissolved in the translucent matrix around it, useless."
The Hydra is a miniature fortress. Despite its physical slowness, it is a rapid processor of the data fed to it by other Vex, and what it lacks in mobility it makes up for in impregnable defenses and rock-melting firepower.
We understand the Vex as a network of thoughts, unified and vast. But not all Vex are the same. The Hezen Corrective is one example of a Vex subtype, set apart from other Vex by distinct behaviors and objectives.
Swarming across the Ishtar Sink, these Vex aggressively seek out and attack the Fallen House of Winter, perform inscrutable operations around shining Confluxes, and even show interest in the Golden Age ruins left by the Ishtar Collective.
The bulk of our contact with Vex forces on Venus has involved the Corrective. Those scholars willing to risk their reputations speculating about the Vex often assert that the Corrective is an agent of change, designed to solve problems and remake the world in a form suitable to the Vex. Others contend that Corrective is simply a strategic distraction - meant to draw attention away from the actions of the Hezen Protective.
The mysterious Hezen Protective is the second major Vex behavioral unit on Venus. Concentrated around the legendary Vault of Glass and the Endless Steps, the site of a massive Vex gate and the access point to the towering Citadel, the Protective's behavior seems very defensive.
But leading Cryptarchs and experienced Guardians warn that it would be a fatal mistake to think of the Vex as a conventional military occupying an area. Vex behavior is always a process, active and purposeful. The Protective is clearly engaged in a colossal project, but as with much Vex behavior, it's unclear whether their ultimate purpose is even comprehensible to us. The Protective may be reacting to an event that has yet to occur, or working towards a goal that - to us - is already historical fact.
Mars is wracked by an ongoing theater-level conflict between the Cabal and a Vex subtype known as the Virgo Prohibition. These aggressive, relentless Vex constantly test the Cabal exclusion zone, apparently heedless of losses.
In spite of the Vex onslaught, the Cabal have managed to expand its beachhead and maintain a hold on several mysterious Vex structures. The Prohibition's tactics seem to be failing in the short run.
But it seems unlikely that an organization with the sheer computational scope of the Vex could be dragged into a losing war of attrition. Is it possible that the Vex are trying to draw out the Cabal strength? Or that their surface losses are a distraction from a deeper strategic ploy?
Ikora Rey has proposed that the Vex units can best be understood as algorithms - each a unique mapping of inputs to behavioral responses. Perhaps the Virgo Prohibition is simply the wrong algorithm for its environment, and its failure will drive the greater Vex network to adapt and improve.
Beyond the towering Meridian Bay gate lies the Black Garden, adrift in time and space. And within the Garden dwell the Vex of the Sol Divisive, frozen in rapture.
We have precious little insight into the Divisive's behavior. They seem central to Vex actions in the solar system: the Garden is clearly a place of enormous power.
Legends and scant field reports all indicate that the Divisive Vex behave religiously. Why would a hyperintelligent, time-spanning thought mesh exhibit religious behavior? The answer seems as obvious as it is chilling: if the Vex found worship and devotion more effective than any other behavior, they would adopt worship. Whatever the Vex found - or made - in the Garden, it transcends even their power.
Those who delve deep into the Vault of Glass have seen time itself torn asunder. Awestruck Ghosts report encounters with ancient Vex, their casings built long before the age of humanity.
It would be easy to assume these Vex are the ancestors of those we face today - but with the Vex it is never so simple.
Survivors of the Vault of Glass report sightings of ancient Vex - ancient in the sense that they have endured for eons. Convergent analysis from multiple Ghosts suggests that these Vex exist in our future.
If the Vex exist in our future - or in a possible future - should we take this as evidence that their defeat is impractical or unattainable? The Guardian Vanguard is quick to point out that time travel remains a mystery, and that the continued existence of the Vex is not remotely a sure indication of humanity's extinction.
Ghost Fragment: Vex
From the Records of the Ishtar Collective
ESI: Maya, I need your help. I don't know how to fix this.
SUNDARESH: What is it? Chioma. Sit. Tell me.
ESI: I've figured out what's happening inside the specimen.
SUNDARESH: Twelve? The operational Vex platform? That's incredible! You must know what this means - ah, so. It's not good, or you'd be on my side of the desk. And it's not urgent, or you'd already have evacuated the site. Which means...
ESI: I have a working interface with the specimen's internal environment. I can see what it's thinking.
SUNDARESH: In metaphorical terms, of course. The cognitive architectures are so -
ESI: No. I don't need any kind of epistemology bridge.
SUNDARESH: Are you telling me it's human? A human merkwelt? Human qualia?
ESI: I'm telling you it's full of humans. It's thinking about us.
SUNDARESH: About - oh no.
ESI: It's simulating us. Vividly. Elaborately. It's running a spectacularly high-fidelity model of a Collective research team studying a captive Vex entity.
SUNDARESH:...how deep does it go?
ESI: Right now the simulated Maya Sundaresh is meeting with the simulated Chioma Esi to discuss an unexpected problem.
SUNDARESH: There's no divergence? That's impossible. It doesn't have enough information.
ESI: It inferred. It works from what it sees and it infers the rest. I know that feels unlikely. But it obviously has capabilities we don't. It may have breached our shared virtual workspace...the neural links could have given it data...
SUNDARESH: The simulations have interiority? Subjectivity?
ESI: I can't know that until I look more closely. But they act like us.
SUNDARESH: We're inside it. By any reasonable philosophical standard, we are inside that Vex.
ESI: Unless you take a particularly ruthless approach to the problem of causal forks: yes. They are us.
SUNDARESH: Call a team meeting.
ESI: The other you has too.
Ghost Fragment: Vex 2
From the Records of the Ishtar Collective
SUNDARESH: So that's the situation as we know it.
ESI: To the best of my understanding.
SHIM: Well I'll be a [profane] [profanity]. This is extremely [profane]. That thing has us over a barrel.
SUNDARESH: Yeah. We're in a difficult position.
DUANE-MCNIADH: I don't understand. So it's simulating us? It made virtual copies of us? How does that give it power?
ESI: It controls the simulation. It can hurt our simulated selves. We wouldn't feel that pain, but rationally speaking, we have to treat an identical copy's agony as identical to our own.
SUNDARESH: It's god in there. It can simulate our torment. Forever. If we don't let it go, it'll put us through hell.
DUANE-MCNIADH: We have no causal connection to the mind state of those sims. They aren't us. Just copies. We have no obligation to them.
ESI: You can't seriously - your OWN SELF -
SHIM: [profane] idiot. Think. Think. If it can run one simulation, maybe it can run more than one. And there will only ever be one reality. Play the odds.
DUANE-MCNIADH: Oh...uh oh.
SHIM: Odds are that we aren't our own originals. Odds are that we exist in one of the Vex simulations right now.
ESI: I didn't think of that.
SUNDARESH: [indistinct percussive sound]
Ghost Fragment: Vex 3
From the Records of the Ishtar Collective
SUNDARESH: I have a plan.
ESI: If you have a plan, then so does your sim, and the Vex knows about it.
DUANE-MCNIADH: Does it matter? If we're in Vex hell right now, there's nothing we can -
SHIM: Stop talking about 'real' and 'unreal.' All realities are programs executing laws. Subjectivity is all that matters.
SUNDARESH: We have to act as if we're in the real universe, not one simulated by the specimen. Otherwise we might as well give up.
ESI: Your sim self is saying the same thing.
SUNDARESH: Chioma, love, please hush. It doesn't help.
DUANE-MCNIADH: Maybe the simulations are just billboards! Maybe they don't have interiority! It's bluffing!
SHIM: I wish someone would simulate you shutting up.
SUNDARESH: If we're sims, we exist in the pocket of the universe that the Vex specimen is able to simulate with its onboard brainpower. If we're real, we need to get outside that bubble.
ESI: ...we call for help.
SUNDARESH: That's right. We bring in someone smarter than the specimen. Someone too big to simulate and predict. A warmind.
SHIM: In the real world, the warmind will be able to behave in ways the Vex can't simulate. It's too smart. The warmind may be able to get into the Vex and rescue - us.
DUANE-MCNIADH: If we try, won't the Vex torture us for eternity? Or just erase us?
SUNDARESH: It may simply erase us. But I feel that's preferable to...the alternatives.
ESI: I agree.
SHIM: Once we try to make the call, the Vex may...react. So let's all savor this last moment of stability.
SUNDARESH: [indistinct sounds]
SHIM: You two are adorable.
DUANE-MCNIADH: I wish I'd taken that job at Clovis.