When I hear a lot of people talk about Slow Takeoff, many of them seem like they are mostly imagining the early part of that takeoff – the part that feels human comprehensible. They're still not imagining superintelligence in the limit.

There are some genres of Slow Takeoff that culminate in somebody "leveraging controlled AI to help fully solve the alignment problem, eventually get fully aligned superintelligence, and then end the acute risk period."

But the sort of person I'm thinking of, for this blogpost, usually doesn't seem to have a concrete visualization of something that could plausibly end the period where anyone could choose to deploy uncontrolled superintelligence. They tend to not like Coherent Extrapolated Volition or similar things.

They seem to be imagining a multipolar d/acc world, where defensive technologies and balance of power is such that you keep getting something like a regular economy running. And even if shit gets quite weird, in some sense it's still the same sort of things happening as today.

I think this world is unlikely. But, I do think it'd be good for someone to write a really fleshed out takeoff story and/or forecast that runs with those assumptions.

Unfortunately, slow takeoff stories take longer so there's a lot more moving parts, you have to invent future politics and economics and how they play out together.

But, fortunately, someone... kinda already did this?

It's a novel called Accelerando. It was written between 2001 and 2005. And the broad strokes of it still feel kinda reasonable, if I'm starting with multipolar d/acc-ish optimistic assumptions.

A thing that is nice about Accelerando is that it wasn't written by someone particularly trying to achieve a political outcome, which reduces an important source of potential bias. On the flipside, it was written by someone trying to tell a good human-comprehensible story, so, it has that bias instead. (It contains some random elements that don't automatically follow from what we currently know to be true).

It has lots of details that are too specific for a random sci-fi author in 2001 to have gotten right. But, I think reading through it is helpful for getting some intuitions about what an AI-accelerated world might look and feel like.

It's probably worth reading the book if you haven't (you can buy it here). But, it contains some vignettes in each chapter that make for a decent summary of the broad strokes. I've compiled some excerpts here that I think make for an okay standalone experience, and I've tried to strip out most bits that spoil the human-centric plot.

(It was hard to strip out all spoilers, but, I think I leave enough gaps you'll still have a good time reading the novel afterwards)

The story is more optimistic than seems realistic to me. But, it's about as optimistic a world as feels plausibly coherent to me that takes place in a centrally multipolar d/acc-ish world that doesn't route through "someone actually builds very powerful friendly AI that is able to set very strong, permanent safeguards in place."

Part 1: "Slow Takeoff"

In Accelerando, a decade passes between each chapter. It starts approximately 2020.

(The forecasted timing is somewhat off but I bet not too far behind. Most of the tech that exists in chapter 1 could probably be built today, but just barely, and it hasn't reached the level of saturation implied in the novel.

Chapter 1

The first chapter's vignette is the most character focused (later ones read more like a news bulletin). But, I think it's kind of useful to have the anchor of a specific guy who lives on the cutting edge of the future.

I think this is supposed to take place in the 2010s, which is... early. I think most of the tech here just barely exists today, but without quite as much market saturation as the book implies, but would probably exist in 1-8 years.

Remember this is written in 2001.

Manfred has a suite at the Hotel Jan Luyken paid for by a grateful multinational consumer protection group, and an unlimited public transport pass paid for by a Scottish sambapunk band in return for services rendered.
He has airline employee’s travel rights with six flag carriers despite never having worked for an airline. His bush jacket has sixty-four compact supercomputing clusters sewn into it, four per pocket, courtesy of an invisible college that wants to grow up to be the next Media Lab.
His dumb clothing comes made to measure from an e-tailor in the Philippines he’s never met. Law firms handle his patent applications on a pro bono basis, and, boy, does he patent a lot—although he always signs the rights over to the Free Intellect Foundation, as contributions to their obligation-free infrastructure project.
In IP geek circles, Manfred is legendary; he’s the guy who patented the business practice of moving your e-business somewhere with a slack intellectual property regime in order to evade licensing encumbrances. He’s the guy who patented using genetic algorithms to patent everything they can permutate from an initial description of a problem domain—not just a better mousetrap, but the set of all possible better mousetraps. Roughly a third of his inventions are legal, a third are illegal, and the remainder are legal but will become illegal as soon as the legislatosaurus wakes up, smells the coffee, and panics.
[...]
Manfred is at the peak of his profession, which is essentially coming up with whacky but workable ideas and giving them to people who will make fortunes with them. He does this for free, gratis. In return, he has virtual immunity from the tyranny of cash; money is a symptom of poverty, after all, and Manfred never has to pay for anything.
There are drawbacks, however. Being a pronoiac meme-broker is a constant burn of future shock—he has to assimilate more than a megabyte of text and several gigs of AV content every day just to stay current. The Internal Revenue Service is investigating him continuously because it doesn’t believe his lifestyle can exist without racketeering. And then there are the items that no money can’t buy: like the respect of his parents. He hasn’t spoken to them for three years, his father thinks he’s a hippy scrounger, and his mother still hasn’t forgiven him for dropping out of his down-market Harvard emulation course. (They’re still locked in the boringly bourgeois twen-cen paradigm of college-career-kids.)
[...]
Manfred drops in at his hotel suite, unpacks his Aineko, plugs in a fresh set of cells to charge, and sticks most of his private keys in the safe. Then he heads straight for the party, which is currently happening at De Wildemann’s; it’s a twenty-minute walk, and the only real hazard is dodging the trams that sneak up on him behind the cover of his moving map display.
Along the way, his glasses bring him up to date on the news. Europe has achieved peaceful political union for the first time ever: They’re using this unprecedented state of affairs to harmonize the curvature of bananas. The Middle East is, well, it’s just as bad as ever, but the war on fundamentalism doesn’t hold much interest for Manfred. In San Diego, researchers are uploading lobsters into cyberspace, starting with the stomatogastric ganglion, one neuron at a time. They’re burning GM cocoa in Belize and books in Georgia. NASA still can’t put a man on the moon. Russia has reelected the communist government with an increased majority in the Duma; meanwhile, in China, fevered rumors circulate about an imminent rehabilitation, the second coming of Mao, who will save them from the consequences of the Three Gorges disaster.
In business news, the US Justice Department is—ironically—outraged at the Baby Bills. The divested Microsoft divisions have automated their legal processes and are spawning subsidiaries, IPOing them, and exchanging title in a bizarre parody of bacterial plasmid exchange, so fast that, by the time the windfall tax demands are served, the targets don’t exist anymore, even though the same staff are working on the same software in the same Mumbai cubicle farms.
Welcome to the twenty-first century.

Chapter 2

Welcome to the [second decade of the] early twenty-first century, human.
It’s night in Milton Keynes, sunrise in Hong Kong. Moore’s Law rolls inexorably on, dragging humanity toward the uncertain future. The planets of the solar system have a combined mass of approximately 2×1027 kilograms.
Around the world, laboring women produce forty-five thousand babies a day, representing 1023 MIPS of processing power. Also around the world, fab lines casually churn out thirty million microprocessors a day, representing 1023 MIPS.
In another ten months, most of the MIPS being added to the solar system will be machine-hosted for the first time. About ten years after that, the solar system’s installed processing power will nudge the critical 1 MIPS per gram threshold—one million instructions per second per gram of matter. After that, singularity—a vanishing point beyond which extrapolating progress becomes meaningless. The time remaining before the intelligence spike is down to single-digit years . . .

Chapter 3

Welcome to the eve of the third decade: a time of chaos characterized by an all-out depression in the space industries.
Most of the thinking power on the planet is now manufactured rather than born; there are ten microprocessors for every human being, and the number is doubling every fourteen months. Population growth in the developing world has stalled, the birth rate dropping below replacement level. In the wired nations, more forward-looking politicians are looking for ways to enfranchise their nascent AI base.
Space exploration is still stalled on the cusp of the second recession of the century. The Malaysian government has announced the goal of placing an imam on Mars within ten years, but nobody else cares enough to try.
The Space Settlers Society is still trying to interest Disney Corp. in the media rights to their latest L5 colony plan, unaware that there’s already a colony out there and it isn’t human: First-generation uploads, Californian spiny lobsters in wobbly symbiosis with elderly expert systems, thrive aboard an asteroid mining project established by the Franklin Trust. Meanwhile, Chinese space agency cutbacks are threatening the continued existence of Moonbase Mao. Nobody, it seems, has figured out how to turn a profit out beyond geosynchronous orbit.

Part II: "Point of Inflection"

Chapter 4

Welcome to the fourth decade. The thinking mass of the solar system now exceeds one MIPS per gram; it’s still pretty dumb, but it’s not dumb all over. The human population is near maximum overshoot, pushing nine billion, but its growth rate is tipping toward negative numbers, and bits of what used to be the first world are now facing a middle-aged average. Human cogitation provides about 1028 MIPS of the solar system’s brainpower.
The real thinking is mostly done by the halo of a thousand trillion processors that surround the meat machines with a haze of computation—individually a tenth as powerful as a human brain, collectively they’re ten thousand times more powerful, and their numbers are doubling every twenty million seconds. They’re up to 1033 MIPS and rising, although there’s a long way to go before the solar system is fully awake.
Technologies come, technologies go, but nobody even five years ago predicted that there’d be tinned primates in orbit around Jupiter by now: A synergy of emergent industries and strange business models have kick-started the space age again, aided and abetted by the discovery of (so far undecrypted) signals from ETs. Unexpected fringe riders are developing new ecological niches on the edge of the human information space, light-minutes and light-hours from the core, as an expansion that has hung fire since the 1970s gets under way.
Amber, like most of the postindustrialists aboard the orphanage ship Ernst Sanger, is in her early teens. While their natural abilities are in many cases enhanced by germ-line genetic recombination, thanks to her mother’s early ideals she has to rely on brute computational enhancements. She doesn’t have a posterior parietal cortex hacked for extra short-term memory, or an anterior superior temporal gyrus tweaked for superior verbal insight, but she’s grown up with neural implants that feel as natural to her as lungs or fingers. Half her wetware is running outside her skull on an array of processor nodes hooked into her brain by quantum-entangled communication channels—her own personal metacortex.
These kids are mutant youth, burning bright: Not quite incomprehensible to their parents, but profoundly alien—the generation gap is as wide as the 1960s and as deep as the solar system. Their parents, born in the gutter years of the twenty-first century, grew up with white elephant shuttles and a space station that just went round and round, and computers that went beep when you pushed their buttons. The idea that Jupiter orbit was somewhere you could go was as profoundly counterintuitive as the Internet to a baby boomer.
Most of the passengers on the can have run away from parents who think that teenagers belong in school, unable to come to terms with a generation so heavily augmented that they are fundamentally brighter than the adults around them. Amber was fluent in nine languages by the age of six, only two of them human and six of them serializable; when she was seven, her mother took her to the school psychiatrist for speaking in synthetic tongues.
That was the final straw for Amber: Using an illicit anonymous phone, she called her father.

In this chapter, Amber ends up initiating an automated factory-expansion process on the moons of Jupiter, that ends up making her a powerful cyborg (with the crust-of-multiple moons worth of computronium augmenting her).

Chapter 5

This chapter (the middle of the "point of inflection" act) has three exposition sections.

The first:

Greetings from the fifth decade of the century of wonders.
The solar system that lies roughly twenty-eight trillion kilometers—just short of three light years—behind the speeding starwhisp Field Circus is seething with change. There have been more technological advances in the past ten years than in the entire previous expanse of human history—and more unforeseen accidents.
Lots of hard problems have proven to be tractable. The planetary genome and proteome have been mapped so exhaustively that the biosciences are now focusing on the challenge of the phenome—plotting the phase-space defined by the intersection of genes and biochemical structures, understanding how extended phenotypic traits are generated and contribute to evolutionary fitness.
The biosphere has become surreal: Small dragons have been sighted nesting in the Scottish highlands, and in the American Midwest, raccoons have been caught programming microwave ovens.
The computing power of the solar system is now around one thousand MIPS per gram, and is unlikely to increase in the near term—all but a fraction of one percent of the dumb matter is still locked up below the accessible planetary crusts, and the sapience/mass ratio has hit a glass ceiling that will only be broken when people, corporations, or other posthumans get around to dismantling the larger planets. A start has already been made in Jupiter orbit and the asteroid belt. Greenpeace has sent squatters to occupy Eros and Juno, but the average asteroid is now surrounded by a reef of specialized nanomachinery and debris, victims of a cosmic land grab unmatched since the days of the wild west.
The best brains flourish in free fall, minds surrounded by a sapient aether of extensions that out-think their meaty cortices by many orders of magnitude—minds like Amber, Queen of the Inner Ring Imperium, the first self-extending power center in Jupiter orbit.
Down at the bottom of the terrestrial gravity well, there has been a major economic catastrophe. Cheap immortagens, out-of-control personality adjuvants, and a new formal theory of uncertainty have knocked the bottom out of the insurance and underwriting industries. Gambling on a continuation of the worst aspects of the human condition—disease, senescence, and death—looks like a good way to lose money, and a deflationary spiral lasting almost fifty hours has taken down huge swaths of the global stock market. Genius, good looks, and long life are now considered basic human rights in the developed world: Even the poorest backwaters are feeling extended effects from the commoditization of intelligence.
Not everything is sweetness and light in the era of mature nanotechnology. Widespread intelligence amplification doesn’t lead to widespread rational behavior. New religions and mystery cults explode across the planet; much of the Net is unusable, flattened by successive semiotic jihads. India and Pakistan have held their long-awaited nuclear war: External intervention by US and EU nanosats prevented most of the IRBMs from getting through, but the subsequent spate of network raids and Basilisk attacks cause havoc. Luckily, infowar turns out to be more survivable than nuclear war—especially once it is discovered that a simple anti-aliasing filter stops nine out of ten neural-wetware-crashing Langford fractals from causing anything worse than a mild headache.
New discoveries this decade include the origins of the weakly repulsive force responsible for changes in the rate of expansion of the universe after the big bang, and on a less abstract level, experimental implementations of a Turing Oracle using quantum entanglement circuits: a device that can determine whether a given functional expression can be evaluated in finite time. It’s boom time in the field of Extreme Cosmology, where some of the more recherché researchers are bickering over the possibility that the entire universe was created as a computing device, with a program encoded in the small print of the Planck constant. And theorists are talking again about the possibility of using artificial wormholes to provide instantaneous connections between distant corners of space-time.
Most people have forgotten about the well-known extraterrestrial transmission received fifteen years earlier. Very few people know anything about the second, more complex transmission received a little later. Many of those are now passengers or spectators of the Field Circus: a light-sail craft that is speeding out of Sol system on a laser beam generated by Amber’s installations in low-Jupiter orbit. (Superconducting tethers anchored to Amalthea drag through Jupiter’s magnetosphere, providing gigawatts of electricity for the hungry lasers: energy that comes in turn from the small moon’s orbital momentum.)
Manufactured by Airbus-Cisco years earlier, the Field Circus is a hick backwater, isolated from the mainstream of human culture, its systems complexity limited by mass. The destination lies nearly three light years from Earth, and even with high acceleration and relativistic cruise speeds the one-kilogram starwhisp and its hundred-kilogram light sail will take the best part of seven years to get there. Sending a human-sized probe is beyond even the vast energy budget of the new orbital states in Jupiter system—near-lightspeed travel is horrifically expensive.
Rather than a big, self-propelled ship with canned primates for passengers, as previous generations had envisaged, the starship is a Coke-can-sized slab of nanocomputers, running a neural simulation of the uploaded brain states of some tens of humans at merely normal speed.
By the time its occupants beam themselves home again for download into freshly cloned bodies, a linear extrapolation shows that as much change will have overtaken human civilization as in the preceding fifty millennia—the sum total of H. sapiens sapiens’ time on Earth. But that’s okay by Amber, because what she expects to find in orbit around the brown dwarf Hyundai +4904/-56 will be worth the wait.

The second:

Outside the light cone of the Field Circus, on the other side of the spacelike separation between Amber’s little kingdom in motion and the depths of empire time that grip the solar system’s entangled quantum networks, a singular new reality is taking shape.
Welcome to the moment of maximum change.
About ten billion humans are alive in the solar system, each mind surrounded by an exocortex of distributed agents, threads of personality spun right out of their heads to run on the clouds of utility fog—infinitely flexible computing resources as thin as aerogel—in which they live. The foggy depths are alive with high-bandwidth sparkles; most of Earth’s biosphere has been wrapped in cotton wool and preserved for future examination. For every living human, a thousand million software agents carry information into the farthest corners of the consciousness address space.
The sun, for so long an unremarkable mildly variable G2 dwarf, has vanished within a gray cloud that englobes it except for a narrow belt around the plane of the ecliptic. Sunlight falls, unchanged, on the inner planets: except for Mercury, which is no longer present, having been dismantled completely and turned into solar-powered high-temperature nanocomputers. A much fiercer light falls on Venus, now surrounded by glittering ferns of carbon crystals that pump angular momentum into the barely spinning planet via huge superconducting loops wound around its equator. This planet, too, is due to be dismantled. Jupiter, Neptune, Uranus—all sprout rings as impressive as Saturn’s. But the task of cannibalizing the gas giants will take many times longer than the small rocky bodies of the inner system.
The ten billion inhabitants of this radically changed star system remember being human; almost half of them predate the millennium. Some of them still are human, untouched by the drive of metaevolution that has replaced blind Darwinian change with a goal-directed teleological progress. They cower in gated communities and hill forts, mumbling prayers and cursing the ungodly meddlers with the natural order of things. But eight out of every ten living humans are included in the phase-change. It’s the most inclusive revolution in the human condition since the discovery of speech.
A million outbreaks of gray goo—runaway nanoreplicator excursions—threaten to raise the temperature of the biosphere dramatically. They’re all contained by the planetary-scale immune system fashioned from what was once the World Health Organization. Weirder catastrophes threaten the boson factories in the Oort cloud. Antimatter factories hover over the solar poles. Sol system shows all the symptoms of a runaway intelligence excursion, exuberant blemishes as normal for a technological civilization as skin problems on a human adolescent.
The economic map of the planet has changed beyond recognition. Both capitalism and communism, bickering ideological children of a protoindustrial outlook, are as obsolete as the divine right of kings. Companies are alive, and dead people may live again, too. Globalism and tribalism have run to completion, diverging respectively into homogeneous interoperability and the Schwarzschild radius of insularity. Beings that remember being human plan the deconstruction of Jupiter, the creation of a great simulation space that will expand the habitat available within the solar system. By converting all the nonstellar mass of the solar system into processors, they can accommodate as many human-equivalent minds as a civilization with a planet hosting ten billion humans in orbit around every star in the galaxy.
A more mature version of Amber lives down in the surging chaos of near-Jupiter space; there’s an instance of Pierre, too, although he has relocated light-hours away, near Neptune. Whether she still sometimes thinks of her relativistic twin, nobody can tell. In a way, it doesn’t matter, because by the time the Field Circus returns to Jupiter orbit, as much subjective time will have elapsed for the fast-thinkers back home as will flash by in the real universe between this moment and the end of the era of star formation, many billions of years hence.

And finally:

Welcome to the downslope on the far side of the curve of accelerating progress.
Back in the solar system, Earth orbits through a dusty tunnel in space. Sunlight still reaches the birth world, but much of the rest of the star’s output has been trapped by the growing concentric shells of computronium built from the wreckage of the innermost planets.
Two billion or so mostly unmodified humans scramble in the wreckage of the phase transition, not understanding why the vasty superculture they so resented has fallen quiet. Little information leaks through their fundamentalist firewalls, but what there is shows a disquieting picture of a society where there are no bodies anymore. Utility foglets blown on the wind form aerogel towers larger than cyclones, removing the last traces of physical human civilization from most of Europe and the North American coastlines. Enclaves huddle behind their walls and wonder at the monsters and portents roaming the desert of postindustrial civilization, mistaking acceleration for collapse.
The hazy shells of computronium that ring the sun—concentric clouds of nanocomputers the size of rice grains, powered by sunlight, orbiting in shells like the packed layers of a Matrioshka doll—are still immature, holding barely a thousandth of the physical planetary mass of the system, but they already support a classical computational density of 1042 MIPS; enough to support a billion civilizations as complex as the one that existed immediately before the great disassembly. The conversion hasn’t yet reached the gas giants, and some scant outer-system enclaves remain independent—Amber’s Ring Imperium still exists as a separate entity, and will do so for some years to come—but the inner solar system planets, with the exception of Earth, have been colonized more thoroughly than any dusty NASA proposal from the dawn of the space age could have envisaged.
From outside the Accelerated civilization, it isn’t really possible to know what’s going on inside. The problem is bandwidth: While it’s possible to send data in and get data out, the sheer amount of computation going on in the virtual spaces of the Acceleration dwarfs any external observer. Inside that swarm, minds a trillion or more times as complex as humanity think thoughts as far beyond human imagination as a microprocessor is beyond a nematode worm. A million random human civilizations flourish in worldscapes tucked in the corner of this world-mind. Death is abolished, life is triumphant. A thousand ideologies flower, human nature adapted where necessary to make this possible. Ecologies of thought are forming in a Cambrian explosion of ideas, for the solar system is finally rising to consciousness, and mind is no longer restricted to the mere kilotons of gray fatty meat harbored in fragile human skulls.
Somewhere in the Acceleration, colorless green ideas adrift in furious sleep remember a tiny starship launched years ago, and pay attention. Soon, they realize, the starship will be in position to act as their proxy in an ages-long conversation. Negotiations for access to Amber’s extrasolar asset commence; the Ring Imperium prospers, at least for a while. But first, the operating software on the human side of the network link will require an upgrade.

Chapter 6

Welcome to decade the sixth, millennium three. These old datelines don’t mean so much anymore, for while some billions of fleshbody humans are still infected with viral memes, the significance of theocentric dating has been dealt a body blow. This may be the fifties, but what that means to you depends on how fast your reality rate runs. The various upload clades exploding across the reaches of the solar system vary by several orders of magnitude—some are barely out of 2049, while others are exploring the subjective thousandth millennium.
While the Field Circus floats in orbit [... around] the brown dwarf Hyundai +4904/-56), while Amber and her crew are trapped [...] —while all this is going on, the damnfool human species has finally succeeded in making itself obsolete.
The proximate cause of its displacement from the pinnacle of creation (or the pinnacle of teleological self-congratulation, depending on your stance on evolutionary biology) is an attack of self-aware corporations. The phrase “smart money” has taken on a whole new meaning, for the collision between international business law and neurocomputing technology has given rise to a whole new family of species—fast-moving corporate carnivores in the net. The planet Mercury has been broken up by a consortium of energy brokers, and Venus is an expanding debris cloud, energized to a violent glare by the trapped and channeled solar output. A million billion fist-sized computing caltrops, backsides glowing dull red with the efflux from their thinking, orbit the sun at various inclinations no farther out than Mercury used to be.
Billions of fleshbody humans refuse to have anything to do with the blasphemous new realities. Many of their leaders denounce the uploads and AIs as soulless machines. Many more are timid, harboring self-preservation memes that amplify a previously healthy aversion to having one’s brain peeled like an onion by mind-mapping robots into an all-pervading neurosis. Sales of electrified tinfoil-lined hats are at an all-time high.
Still, hundreds of millions have already traded their meat puppets for mind machines, and they breed fast. In another few years, the fleshbody populace will be an absolute minority of the posthuman clade. Sometime later, there will probably be a war. The dwellers in the thoughtcloud are hungry for dumb matter to convert, and the fleshbodies make notoriously poor use of the collection of silicon and rare elements that pool at the bottom of the gravity well that is Earth.
Energy and thought are driving a phase-change in the condensed matter substance of the solar system. The MIPS per kilogram metric is on the steep upward leg of a sigmoid curve—dumb matter is coming to life as the mind children restructure everything with voracious nanomechanical servants. The thoughtcloud forming in orbit around the sun will ultimately be the graveyard of a biological ecology, another marker in space visible to the telescopes of any new iron-age species with the insight to understand what they’re seeing: the death throes of dumb matter, the birth of a habitable reality vaster than a galaxy and far speedier.
Death throes that ‘within a few centuries’ will mean the extinction of biological life within a light year or so of that star—for the majestic Matrioshka brains, though they are the pinnacles of sentient civilization, are intrinsically hostile environments for fleshy life.

Part III: "Singularity"

Chapter 7:

Welcome to decade eight, third millennium, when the effects of the phase-change in the structure of the solar system are finally becoming visible on a cosmological scale.
There are about eleven billion future-shocked primates in various states of life and undeath throughout the solar system. Most of them cluster where the interpersonal bandwidth is hottest, down in the water zone around old Earth. Earth’s biosphere has been in the intensive care ward for decades, weird rashes of hot-burning replicators erupting across it before the World Health Organization can fix them—gray goo, thylacines, dragons.
The last great transglobal trade empire, run from the arcologies of Hong Kong, has collapsed along with capitalism, rendered obsolete by a bunch of superior deterministic resource allocation algorithms collectively known as Economics 2.0. Mercury, Venus, Mars, and Luna are all well on the way to disintegration, mass pumped into orbit with energy stolen from the haze of free-flying thermoelectrics that cluster so thickly around the solar poles that the sun resembles a fuzzy red ball of wool the size of a young red giant.
Humans are just barely intelligent tool users; Darwinian evolutionary selection stopped when language and tool use converged, leaving the average hairy meme carrier sadly deficient in smarts. Now the brightly burning beacon of sapience isn’t held by humans anymore—their cross-infectious enthusiasms have spread to a myriad of other hosts, several types of which are qualitatively better at thinking.
At last count, there were about a thousand nonhuman intelligent species in Sol space, split evenly between posthumans on one side, naturally self-organizing AIs in the middle, and mammalian nonhumans on the other. The common mammal neural chassis is easily upgraded to human-style intelligence in most species that can carry, feed and cool a half kilogram of gray matter, and the descendants of a hundred ethics-challenged doctoral theses are now demanding equal rights. So are the unquiet dead: the panopticon-logged net ghosts of people who lived recently enough to imprint their identities on the information age, and the ambitious theological engineering schemes of the Reformed Tiplerite Church of Latter-Day Saints (who want to emulate all possible human beings in real time, so that they can have the opportunity to be saved).
The human memesphere is coming alive, although how long it remains recognizably human is open to question. The informational density of the inner planets is visibly converging on Avogadro’s number of bits per mole, one bit per atom, as the deconstructed dumb matter of the inner planets (apart from Earth, preserved for now like a picturesque historic building stranded in an industrial park) is converted into computronium.
And it’s not just the inner system. The same forces are at work on Jupiter’s moons, and those of Saturn, although it’ll take thousands of years rather than mere decades to dismantle the gas giants themselves. Even the entire solar energy budget isn’t enough to pump Jupiter’s enormous mass to orbital velocity in less than centuries. The fast-burning primitive thinkers descended from the African plains apes may have vanished completely or transcended their fleshy architecture before the solar Matrioshka brain is finished. It won’t be long now . . .

Chapter 8

Before it gets to the usual News Bulletin, Chapter 8 introduces this FAQ:

Welcome to Saturn, your new home world. This FAQ (Frequently Asked Questions) memeplex is designed to orient you and explain the following:
How you got here
Where “here” is
Things you should avoid doing
Things you might want to do as soon as possible
Where to go for more information.
If you are remembering this presentation, you are probably resimulated. This is not the same as being resurrected. You may remember dying. Do not worry: Like all your other memories, it is a fabrication. In fact, this is the first time you have ever been alive. (Exception: If you died after the singularity, you may be a genuine resurrectee. In which case, why are you reading this FAQ?)
HOW YOU GOT HERE:
The center of the solar system—Mercury, Venus, Earth’s Moon, Mars, the asteroid belt, and Jupiter—have been dismantled, or are being dismantled, by weakly godlike intelligences. [NB: Monotheistic clergy and Europeans who remember living prior to 1600, see alternative memeplex “in the beginning.”]
A weakly godlike intelligence is not a supernatural agency but the product of a highly advanced society that learned how to artificially create souls [late twentieth century: software] and translate human minds into souls and vice versa. [Core concepts: Human beings all have souls. Souls are software objects. Software is not immortal.]
Some of the weakly godlike intelligences appear to cultivate an interest in their human antecedents—for whatever reason is not known. (Possibilities include the study of history through horticulture, entertainment through live-action role-playing, revenge, and economic forgery.) While no definitive analysis is possible, all the resimulated persons to date exhibit certain common characteristics: They are all based on well-documented historical persons, their memories show suspicious gaps [see: smoke and mirrors], and they are ignorant of or predate the singularity [see: Turing Oracle, Vinge catastrophe].
It is believed that the weakly godlike agencies have created you as a vehicle for the introspective study of your historical antecedent by backward-chaining from your corpus of documented works, and the back-projected genome derived from your collateral descendants, to generate an abstract description of your computational state vector. This technique is extremely intensive [see: expTime-complete algorithms, Turing Oracle, time travel, industrial magic] but marginally plausible in the absence of supernatural explanations.
After experiencing your life, the weakly godlike agencies have expelled you. For reasons unknown, they chose to do this by transmitting your upload state and genome/proteome complex to receivers owned and operated by a consortium of charities based on Saturn. These charities have provided for your basic needs, including the body you now occupy.
In summary: You are a reconstruction of someone who lived and died a long time ago, not a reincarnation. You have no intrinsic moral right to the identity you believe to be your own, and an extensive body of case law states that you do not inherit your antecedent’s possessions. Other than that, you are a free individual.
Note that fictional resimulation is strictly forbidden. If you have reason to believe that you may be a fictional character, you must contact the city immediately. [ See: James Bond, Spider Jerusalem.] Failure to comply is a felony.
WHERE YOU ARE:
You are on Saturn. Saturn is a gas giant planet 120,500 kilometers in diameter, located 1.5 billion kilometers from Earth’s sun. [NB: Europeans who remember living prior to 1580, see alternative memeplex “the flat Earth—not”.]
Saturn has been partially terraformed by posthuman emigrants from Earth and Jupiter orbit: The ground beneath your feet is, in reality, the floor of a hydrogen balloon the size of a continent, floating in Saturn’s upper atmosphere. [NB: Europeans who remember living prior to 1790, internalize the supplementary memeplex: “the Brothers Montgolfier.”]
The balloon is very safe, but mining activities and the use of ballistic weapons are strongly deprecated because the air outside is unbreathable and extremely cold.
The society you have been instantiated in is extremely wealthy within the scope of Economics 1.0, the value transfer system developed by human beings during and after your own time. Money exists, and is used for the usual range of goods and services, but the basics—food, water, air, power, off-the-shelf clothing, housing, historical entertainment, and monster trucks—are free. An implicit social contract dictates that, in return for access to these facilities, you obey certain laws.
If you wish to opt out of this social contract, be advised that other worlds may run Economics 2.0 or subsequent releases. These value-transfer systems are more efficient—hence wealthier—than Economics 1.0, but true participation in Economics 2.0 is not possible without dehumanizing cognitive surgery.
Thus, in absolute terms, although this society is richer than any you have ever heard of, it is also a poverty-stricken backwater compared to its neighbors.
THINGS YOU SHOULD AVOID DOING:
Many activities that have been classified as crimes in other societies are legal here.
These include but are not limited to: acts of worship, art, sex, violence, communication, or commerce between consenting competent sapients of any species, except where such acts transgress the list of prohibitions below. [See additional memeplex: competence defined.]
Some activities are prohibited here and may have been legal in your previous experience. These include willful deprivation of ability to consent [see: slavery], interference in the absence of consent [see: minors, legal status of], formation of limited liability companies [see: singularity], and invasion of defended privacy [see: the Slug, Cognitive Pyramid Schemes, Brain Hacking, Thompson Trust Exploit].
Some activities unfamiliar to you are highly illegal and should be scrupulously avoided. These include: possession of nuclear weapons, possession of unlimited autonomous replicators [see: gray goo], coercive assimilationism [see: borganism, aggressive], coercive halting of Turing-equivalent personalities [see: Basilisks], and applied theological engineering [see: God bothering].
Some activities superficially familiar to you are merely stupid and should be avoided for your safety, although they are not illegal as such. These include: giving your bank account details to the son of the Nigerian Minister of Finance; buying title to bridges, skyscrapers, spacecraft, planets, or other real assets; murder; selling your identity; and entering into financial contracts with entities running Economics 2.0 or higher.
THINGS YOU SHOULD DO AS SOON AS POSSIBLE:
Many material artifacts you may consider essential to life are freely available—just ask the city, and it will grow you clothes, a house, food, or other basic essentials. Note, however, that the library of public domain structure templates is of necessity restrictive and does not contain items that are highly fashionable or that remain in copyright. Nor will the city provide you with replicators, weapons, sexual favors, slaves, or zombies.
You are advised to register as a citizen as soon as possible. If the individual you are a resimulation of can be confirmed dead, you may adopt their name but not—in law—any lien or claim on their property, contracts, or descendants. You register as a citizen by asking the city to register you; the process is painless and typically complete within four hours. Unless you are registered, your legal status as a sapient organism may be challenged. The ability to request citizenship rights is one of the legal tests for sapience, and failure to comply may place you in legal jeopardy.
You can renounce your citizenship whenever you wish: This may be desirable if you emigrate to another polity. While many things are free, it is highly likely that you possess no employable skills, and therefore, no way of earning money with which to purchase unfree items. The pace of change in the past century has rendered almost all skills you may have learned obsolete [see: singularity].
However, owing to the rapid pace of change, many cooperatives, trusts, and guilds offer on-the-job training or educational loans. Your ability to learn depends on your ability to take information in the format in which it is offered. Implants are frequently used to provide a direct link between your brain and the intelligent machines that surround it. A basic core implant set is available on request from the city. [See: implant security, firewall, wetware.]
Your health is probably good if you have just been reinstantiated, and is likely to remain good for some time. Most diseases are curable, and in event of an incurable ailment or injury, a new body may be provided—for a fee. (In event of your murder, you will be furnished with a new body at the expense of your killer.) If you have any preexisting medical conditions or handicaps, consult the city.
The city is an agoric-annealing participatory democracy with a limited liability constitution. Its current executive agency is a weakly godlike intelligence that chooses to associate with human-equivalent intelligences: This agency is colloquially known as [spoilers] and may manifest itself in a variety of physical avatars if corporeal interaction is desired. (Prior to the arrival of [spoilers] the city used a variety of human-designed expert systems that provided suboptimal performance.)
The city’s mission statement is to provide a mediatory environment for human-equivalent intelligences and to preserve same in the face of external aggression. Citizens are encouraged to participate in the ongoing political processes of determining such responses. Citizens also have a duty to serve on a jury if called (including senatorial service), and to defend the city.
WHERE TO GO FOR FURTHER INFORMATION:
Until you have registered as a citizen and obtained basic implants, all further questions should be directed to the city. Once you have learned to use your implants, you will not need to ask this question.

Followed later by:

Welcome to decade the ninth, singularity plus one gigasecond (or maybe more—nobody’s quite sure when, or indeed if, a singularity has been created).
The human population of the solar system is either six billion, or sixty billion, depending on whether you class-forked state vectors of posthumans and the simulations of dead phenotypes running in the Vile Offspring’s Schrödinger boxes as people. Most of the physically incarnate still live on Earth, but the lily pads floating beneath continent-sized hot-hydrogen balloons in Saturn’s upper atmosphere already house a few million, and the writing is on the wall for the rocky inner planets.
All the remaining human-equivalent intelligences with half a clue to rub together are trying to emigrate before the Vile Offspring decide to recycle Earth to fill in a gap in the concentric shells of nanocomputers they’re running on. The half-constructed Matrioshka brain already darkens the skies of Earth and has caused a massive crash in the planet’s photosynthetic biomass, as plants starve for short-wavelength light.
Since decade the seventh, the computational density of the solar system has soared. Within the asteroid belt, more than half the available planetary mass has been turned into nanopro-cessors, tied together by quantum entanglement into a web so dense that each gram of matter can simulate all the possible life experiences of an individual human being in a scant handful of minutes.
Economics 2.0 is itself obsolescent, forced to mutate in a furious survivalist arms race by [spoilers]. Only the name remains as a vague shorthand for merely human-equivalent intelligences to use when describing interactions they don’t understand.
The latest generation of posthuman entities is less overtly hostile to humans, but much more alien than the generations of the fifties and seventies. Among their less comprehensible activities, the Vile Offspring are engaged in exploring the phase-space of all possible human experiences from the inside out. Perhaps they caught a dose of the Tiplerite heresy along the way, for now a steady stream of resimulant uploads is pouring through the downsystem relays in Titan orbit.

Even later in chapter 8:

Welcome to the afterglow of the intelligence supernova, little tapeworm.
Tapeworms have on the order of a thousand neurons, pulsing furiously to keep their little bodies twitching. Human beings have on the order of a hundred billion neurons. What is happening in the inner solar system as the Vile Offspring churn and reconfigure the fast-thinking structured dust clouds that were once planets is as far beyond the ken of merely human consciousness as the thoughts of a Gödel are beyond the twitching tropisms of a worm. Personality modules bounded by the speed of light, sucking down billions of times the processing power of a human brain, form and re-form in the halo of glowing nanopro-cessors that shrouds the sun in a ruddy, glowing cloud.
Mercury, Venus, Mars, Ceres, and the asteroids—all gone. Luna is a silvery iridescent sphere, planed smooth down to micrometer heights, luminous with diffraction patterns. Only Earth, the cradle of human civilization, remains untransformed; and Earth, too, will be dismantled soon enough, for already a trellis of space elevators webs the planet around its equator, lifting refugee dumb matter into orbit and flinging it at the wildlife preserves of the outer system.
The intelligence bloom that gnaws at Jupiter’s moons with claws of molecular machinery won’t stop until it runs out of dumb matter to convert into computronium. By the time it does, it will have as much brainpower as you’d get if you placed a planet with a population of six billion future-shocked primates in orbit around every star in the Milky Way galaxy. But right now, it’s still stupid, having converted barely a percentage point of the mass of the solar system—it’s a mere Magellanic Cloud civilization, infantile and unsubtle and still perilously close to its carbon-chemistry roots.
It’s hard for tapeworms living in warm intestinal mulch to wrap their thousand-neuron brains around whatever it is that the vastly more complex entities who host them are discussing, but one thing’s sure—the owners have a lot of things going on, not all of them under conscious control. The churning of gastric secretions and the steady ventilation of lungs are incomprehensible to the simple brains of tapeworms, but they serve the purpose of keeping the humans alive and provide the environment the worms live in. And other more esoteric functions that contribute to survival—the intricate dance of specialized cloned lymphocytes in their bone marrow and lymph nodes, the random permutations of antibodies constantly churning for possible matches to intruder molecules warning of the presence of pollution—are all going on beneath the level of conscious control.
Autonomic defenses. Antibodies. Intelligence blooms gnawing at the edges of the outer system. And humans are not as unsophisticated as mulch wrigglers, they can see the writing on the wall. Is it any surprise that among the ones who look outward, the real debate is not over whether to run but over how far and how fast?

Chapter 9

[A nearby] brown dwarf system has succumbed to an anthropic infestation.
An unoptimized instance of H. sapiens maintains state coherency for only two to three gigaseconds before it succumbs to necrosis. But in only about ten gigaseconds, the infestation has turned the dead brown dwarf system upside down.
They strip-mined the chilly planets to make environments suitable for their own variety of carbon life. They rearranged moons, building massive structures the size of asteroids. They ripped wormhole endpoints free of the routers and turned them into their own crude point-to-point network, learned how to generate new wormholes, then ran their own packet-switched polities over them.
Wormhole traffic now supports an ever-expanding mesh of interstellar human commerce, but always in the darkness between the lit stars and the strange, metal-depleted dwarfs with the suspiciously low-entropy radiation. The sheer temerity of the project is mind-boggling. Notwithstanding that canned apes are simply not suited to life in the interstellar void, especially in orbit around a brown dwarf whose planets make Pluto seem like a tropical paradise, they’ve taken over the whole damn system.
New Japan is one of the newer human polities in this system, a bunch of nodes physically collocated in the humaniformed spaces of the colony cylinders. Its designers evidently only knew about old Nippon from recordings made back before Earth was dismantled, and worked from a combination of nostalgia-trip videos, Miyazaki movies, and anime culture. Nevertheless, it’s the home of numerous human beings—even if they are about as similar to their historical antecedents as New Japan is to its long-gone namesake.
Humanity?
Their grandparents would recognize them, mostly. The ones who are truly beyond the ken of twentieth-century survivors stayed back home in the red-hot clouds of nanocomputers that have replaced the planets that once orbited Earth’s sun in stately Copernican harmony. The fast-thinking Matrioshka brains are as incomprehensible to their merely posthuman ancestors as an ICBM to an amoeba—and about as inhabitable.
Space is dusted with the corpses of Matrioshka brains that have long since burned out, informational collapse taking down entire civilizations that stayed in close orbit around their home stars. Farther away, galaxy-sized intelligences beat incomprehensible rhythms against the darkness of the vacuum, trying to hack the Planck substrate into doing their bidding.
Posthumans, and the few other semitranscended species [...] live furtively in the darkness between these islands of brilliance. There are, it would seem, advantages to not being too intelligent.
Humanity. Monadic intelligences, mostly trapped within their own skulls, living in small family groups within larger tribal networks, adaptable to territorial or migratory lifestyles.
Those were the options on offer before the great acceleration. Now that dumb matter thinks, with every kilogram of wallpaper potentially hosting hundreds of uploaded ancestors, now that every door is potentially a wormhole to a hab half a parsec away, the humans can stay in the same place while the landscape migrates and mutates past them, streaming into the luxurious void of their personal history. Life is rich here, endlessly varied and sometimes confusing.
So it is that tribal groups remain, their associations mediated across teraklicks and gigaseconds by exotic agencies. And sometimes the agencies will vanish for a while, reappearing later like an unexpected jape upon the infinite.

Postscript

I don't really buy, given the scenario, that humans-qua-humans actually survive as much as they are depicted here. The Accelerando world doesn't seem to exactly have "grabby" posthumans or aliens, which seems unrealistic to me, because it only takes one to render all available matter under assault by vastly powerful forces that traditional humans couldn't defend against, even weak brown dwarf stars.

(It's been awhile since I read it, I vaguely recall some in-universe reasons that it worked out with less grabbiness, but they were not reasons I expect to generalize to our world).

Accelerando is deliberately unclear about what's going on inside the Vile Offspring posthumans. It's not known whether they are conscious or otherwise have properties that I'd consider morally valuable.

The story doesn't really grapple with Hansonian arguments, about what evolutionary forces start applying once all matter has been claimed, and we leave the dreamtime. (That is: there are no longer growing piles of resources that allow populations to grow while still having a high-surplus standard of living. And, there is no mechanism enforcing limits on reproduction. This implies a reversion to subsistence living, albeit in a very different form than our primitive ancestors)