Alastair Reynolds - Chasm City

Dear Newcomer,

Welcome to the Epsilon Eridani system.

Despite all that has happened, we hope your stay here will be a pleasant one. For your information we have compiled this document to explain some of the key events in our recent history. It is intended that this information will ease your transition into a culture which may be markedly different from the one you were expecting to find when you embarked at your point of origin. It is important that you realise that others have come before you. Their experiences have helped us shape this document in a manner designed to minimise the shock of cultural adjustment. We have found that attempts to gloss over or understate the truth of what happenedof what continues to happenare ultimately harmful; that the best approachbased on a statistical study of cases such as yoursis to present the facts in as open and honest manner as possible.

We are fully aware that your initial response is likely disbelief, quickly followed by anger and then a state of protracted denial.

It is important to grasp that these are normal reactions.

It is equally important to graspeven at this early stagethat there will come a time when you will adjust to and accept the truth. It might be days from now; it might even be weeks or months, but in all but a minority of cases it will happen. You might even look back upon this time and wish that you could have willed yourself to make the transition to acceptance quicker than you did. You will know that it is only when that process is accomplished that anything resembling happiness becomes possible.

Let us therefore begin the process of adjustment.

Due to the fundamental lightspeed limit for communication within the sphere of colonised space, news from other solar systems is inevitably out of date; often by decades or more. Your perceptions of our systems main world, Yellowstone, are almost certainly based on outdated information.

It is certainly the case that for more than two centuriesuntil, in fact, the very recent pastYellowstone was in thrall to what most contemporary observers chose to term the Belle Epoque. It was an unprecedented social and technological golden age; our ideological template seen by all to be an almost perfect system of governance.

Numerous successful ventures were launched from Yellowstone, including daughter colonies in other solar systems, as well as ambitious scientific expeditions to the edge of human space. Visionary social experiments were conducted within Yellowstone and its Glitter Band, including the controversial but pioneering work of Calvin Sylveste and his disciples. Great artists, philosophers and scientists flourished in Yellowstones atmosphere of hothouse innovation. Techniques of neural augmentation were pursued fearlessly. Other human cultures chose to treat the Conjoiners with suspicion, but we Demarchistsunafraid of the positive aspects of mind enhancement methodsestablished lines of rapport with the Conjoiners which enabled us to exploit their technologies to the full. Their starship drives allowed us to settle many more systems than cultures subscribing to inferior social models.

In truth, it was a glorious time. It was also the likely state of affairs which you were expecting upon your arrival.

This is unfortunately not the case.

Seven years ago something happened to our system. The exact transmission vector remains unclear even now, but it is almost certain that the plague arrived aboard a ship, perhaps in dormant form and unknown to the crew who carried it. It might even have arrived years earlier. It seems unlikely now that the truth will ever be known; too much has been destroyed or forgotten. Vast swathes of our digitally stored planetary history were erased or corrupted by the plague. In many cases only human memory remains intact and human memory is not without its fallibilities.

The Melding Plague attacked our society at the core.

It was not quite a biological virus, not quite a software virus, but a strange and shifting chimera of the two. No pure strain of the plague has ever been isolated, but in its pure form it must resemble a kind of nanomachinery, analogous to the molecular-scale assemblers of our own medichine technology. That it must be of alien origin seems beyond doubt. Equally clear is the fact that nothing we have thrown against the plague has done more than slow it. More often than not, our interventions have only made things worse. The plague adapts to our attacks; it perverts our weapons and turns them against us. Some kind of buried intelligence seems to guide it. We dont know whether the plague was directed toward humanityor whether we have just been terribly unlucky.

At this point, based on our prior experiences, your most likely reaction is to assume that this document is a hoax. Our experience has also shown that our denying this will accelerate the process of adjustment by a small but statistically significant factor.

This document is not a hoax.

The Melding Plague actually happened, and its effects were far worse than you are currently capable of imagining. At the time of the plagues manifestation our society was supersaturated by trillions of tiny machines. They were our unthinking, uncomplaining servants, givers of life and shapers of matter, and yet we barely gave them a moments thought. They swarmed tirelessly through our blood. They toiled ceaselessly in our cells. They clotted our brains, linking us all into the Demarchys web of near-instantaneous decision-making. We moved through virtual environments woven by direct manipulation of the brains sensory mechanisms, or scanned and uploaded our minds into lightning-fast computer systems. We forged and sculpted matter on the scale of mountains; wrote symphonies out of matter; caused it to dance to our whims like tamed fire. Only the Conjoiners had taken a step closer to Godhead and some said we were not far behind them.

Machines grew our orbiting city-states from raw rock and ice, and then bootstrapped inert matter towards life within their biomes. Thinking machines ran those city-states, shepherding the ten thousand habitats of the Glitter Band as they processed around Yellowstone. Machines made Chasm City what it was; shaping its amorphous architecture towards a fabulous and phantasmagoric beauty.

All that is gone.

It was worse than you are thinking. If the plague had only killed our machines, millions would still have died, but that would have been a manageable catastrophe, something from which we could have recovered. But the plague went beyond mere destruction, into a realm much closer to artistry, albeit an artistry of a uniquely perverted and sadistic kind. It caused our machines to evolve uncontrollablyout of our control, at leastseeking bizarre new symbioses. Our buildings turned into Gothic nightmares, trapping us before we could escape their lethal transfigurations. The machines in our cells, in our blood, in our heads, began to break their shacklesblurring into us, corrupting living matter. We became glistening, larval fusions of flesh and machine. When we buried the dead they kept growing, spreading together, fusing with the citys architecture.

It was a time of horror.

It is not yet over.

And yet, like any truly efficient plague, our parasite was careful not to kill its host population entirely. Tens of millions diedbut tens of millions more reached some kind of sanctuary, hiding within hermetically sealed enclaves in the city or orbit. Their medichines were given emergency destruct orders, converting themselves to dust which was flushed harmlessly out of the body. Surgeons worked furiously to tear implants from heads before traces of the plague reached them.

Other citizens, too strongly wedded to their machines to give them up, sought a kind of escape in reefersleep. They elected to be buried in sealed community cryocrypts or to leave the system entirely. Meanwhile, tens of millions more poured into Chasm City from orbit, fleeing the destruction of the Glitter Band. Some of those people had been amongst the wealthiest in the system, yet now they were as poor as any historical refugees. What they found in Chasm City could hardly have comforted them