Novel reviewPageNF-0075

The Door Marked Exit

Cory Doctorow's 2017 novel is sure the hard part of a post-scarcity world is the people who own the old one, and it is less sure the people leaving it will behave any better.

Quick answer

Nearfi scores Walkaway (2017) 7.0/10 as art. It treats leaving as the political act, and its machines that rebuild a camp from rubble feel like a plausible extension of existing tools. As prophecy, its P(n) is 35%: The printers and the precarious, over-watched work are partly here, but a life of abundance outside the money economy and the end of death are still a long way off.

At a glance
As art
7.0/10
Why it scored 7.0
  • It treats leaving as the political act, and its machines that rebuild a camp from rubble feel like a plausible extension of existing tools.
  • Characters stop mid-crisis to deliver the argument, so the book often reads better as a manifesto than as a novel.
  • The walkaways' real invention is a culture of sharing and arguing, and the book is honest that this is where they fail.
As prophecy
35% P(n)
chance its future arrives by 2046 · P50 63%

The printers and the precarious, over-watched work are partly here, but a life of abundance outside the money economy and the end of death are still a long way off.

Its most pivotal predictions
  • NEAR Fabrication and recycling machines are cheap and capable enough that people can build shelter, tools and clothing from rubble and live outside the money economy.
  • FAR Research that can end death, by capturing and continuing a person's mind, becomes workable and sets off a war over who controls it.
  • ARRIVING A wealthy elite funds the search for radical life extension and tries to keep the results for itself.
Every prediction, with evidence →
Walkaway: official artwork
7.0
Walkaway · Cory Doctorow · 2017
Nearness
FARNEARARRIVINGARRIVED

The printers and the precarious, over-watched work are partly here, but a life of abundance outside the money economy and the end of death are still a long way off.

Most near-future novels are about a thing: a machine, a virus, a corporation. Walkaway is about a verb. The verb is "walk away", and the novel's argument is that it is the most dangerous thing a person can do to an economy.

Cory Doctorow published it in April 2017, through Tor in the US and Head of Zeus in the UK. The world it starts in is called Default. It is a near future damaged by climate change and pollution, watched everywhere, and run for the benefit of the very rich. For most people the work has gone, and what remains is something the book calls "non-work". Hubert, Etc. is a young man named for his long string of middle names. He and his friend Seth meet Natalie Redwater, who was born into the elite and has had enough of it. The three leave.

What they find is better than they expected, and much more difficult. Printers far better than the ones in any real shop make tools, clothes and shelter. Machines hunt through rubbish and break it down into raw material. Nobody needs money to eat. So more people come, and the walkaways begin to settle in abandoned districts and then whole abandoned cities. The rich respond as the rich do: with police, soldiers and mercenaries. Then the walkaways' laboratories turn up something the powerful can't leave alone, research that could end death, and the quarrel becomes a war.


The art: a manifesto with a pulse

The book's best ideas are social. Doctorow's walkaways don't have a leader, a creed or a budget. They have habits: cuddle puddles, chosen names, a disdain for tracking who has done how many hours. They argue constantly about whether a community may reward merit, and the book lets the argument stay unsettled. The ambition is to make a world where greed is not rewarded, and the novel's whole plot is the test of it.

Reviewers split in the way you'd predict. Strange Horizons thought it succeeded better as a manifesto than as a novel. I agree. People in Walkaway tend to stop in the middle of a crisis and explain the economics. The plot jumps forward in time, which lets Doctorow show consequences, but it also means we meet characters at the moment of a speech and leave before we've watched them live.

I think that's a fair price for a book this generous. It is among the few utopias that spends its length on the labour of making one, and it knows that abundance of things doesn't produce abundance of patience. It is warm, argumentative and cheerful in a way that near-future fiction rarely manages.

The weakness, then, is the architecture. The book wants to be an adventure, a love story and a seminar all at once, and the seminar usually wins. The antagonists are thinner than the walkaways. The finest thing in the book is a group of people with no authority trying to agree on rules. When the story turns to the war, it loses some of that.


The prophecy: the tools, the fear and the long shot

Doctorow makes three bets that matter.

The tools. The walkaways' world depends on fabrication cheap enough to make a settlement from rubble. Today's versions are real but nowhere near that. A robotics company, ICON, has printed nearly a hundred houses at Wolf Ranch in Georgetown, Texas, working with the builder Lennar, and they sell for about $450,000 to $600,000. That's a new way of building and a standard-priced house. It is not a free home. The distance between the printer in the novel and the printer in Texas is the distance between a tool and an economy: the walls can be printed, but the land, the permits and the profit margin stay where they were. Doctorow's tools are plausible. His claim that tools alone dissolve scarcity is the part that is a long way off.

The fear. The book imagines a world in which fewer people are needed and the ones who remain are nervous. This one is on its way, with a hedge. The IMF said in January 2024 that almost 40 per cent of jobs worldwide are exposed to AI, and about 60 per cent in rich countries. But a Yale Budget Lab study in October 2025 found no sign of economy-wide job loss in the first 33 months after ChatGPT's launch. Default's fear of becoming surplus is real today. Its world of mass non-work isn't here.

The long shot. The war starts over the end of death, and the real world has taken a first step. The biotech start-up Altos Labs launched in January 2022 with $3 billion, with Yuri Milner reported among its backers and Jeff Bezos rumoured to be one, to chase cellular "rejuvenation". Rich people are paying to live longer, which is the book's setup. But the novel's research is about the mind, and here reality is slow. In April 2025 researchers published the most detailed wiring map of a mammalian brain so far: one cubic millimetre of mouse cortex, around the size of a grain of sand, with some 200,000 cells and 523 million synapses. That is a small fraction of one mouse brain, let alone a human one. The ending of death is the novel's furthest bet, and it is the one I'd put the least money on.

What the book can't settle is who owns the tools. Printers are only as free as the designs and permissions behind them, and that, more than any army, decides whether leaving is possible.


The reading

Walkaway is a flawed, big-hearted and very useful book. As a novel it lectures. As prophecy it has the mood right (precarious work, a watched public, a rich minority that wants to be young for ever) and the technology plausible but premature. It is more careful about people than about printers, and that is the right way round. The best thing in it is the suggestion that exit is a form of voting, and that a society which makes leaving easy has to be worth staying in.

The book ends up asking one question that every decade of this century will be asked: when the old arrangement stops working for you, where is the door, and who is standing in it?

The prediction ledger

What it predicted, and what happened

P50 · by 2076
63%
Here now
10%
Claims
4
Next likely arrival
2032

Walkaway is closest in its fear: precarious, over-watched work and a rich minority paying to live longer are already visible. Its machines are plausible but premature, and the end of death is a long way off.

How this P(n) was calculated

P(n) is the chance that this work's future arrives within 20 years, by 2046. For each prediction we turn our estimate into a probability: arrived is 100%, diverged is 0%, and otherwise the low end of our 80% range counts as a 10% chance, the median year 50% and the high end 90%. Each prediction is weighted 1–5 by how pivotal it is to the story, and P(n) is the weighted average. P50 does the same by 2076. P(n), explained.

ClaimPrediction · why this weightWeightStatus · estimateBy 2046By 2076
WALK-1Fabrication and recycling machines are cheap and capable enough that people can build shelter, tools and clothing from rubble and live outside the money economy.
Core premise: the walkaway settlements, and so the whole story, depend on these machines making leaving possible.
5NEAR
2060 (2040–2100)
22%66%
WALK-2Research that can end death, by capturing and continuing a person's mind, becomes workable and sets off a war over who controls it.
Major: it is what turns the walkaway movement into a war with the elite.
4FAR
2120 (2080–2250)
4%9%
WALK-3A wealthy elite funds the search for radical life extension and tries to keep the results for itself.
Supporting: the elite's wish to live for ever drives the conflict, though the plot turns on the walkaways' research.
3ARRIVING
2032 (2028–2050)
81%100%
WALK-4Automation leaves a large share of people without stable paid work, in a precarious 'non-work' economy.
Supporting: the precarity of Default is what makes Hubert, Seth and Natalie leave.
3NEAR
2045 (2033–2075)
51%90%
P(n) = P20 = Σ(weight × chance by 2046) ÷ Σ weight = 5.2 ÷ 15 = 35%
P50 = 9.4 ÷ 15 = 63%

Already here today (arrived 1, arriving ½, weighted): 10%.

  1. WALK-1

    Fabrication and recycling machines are cheap and capable enough that people can build shelter, tools and clothing from rubble and live outside the money economy.

    NEARCore premiseEst. 2060 · range 2040–2100+Confidence: low

    Weight 5/5 · Core premise: the walkaway settlements, and so the whole story, depend on these machines making leaving possible.

    3D-printed housing is real: ICON and Lennar had printed nearly a hundred houses at Wolf Ranch, Texas, by August 2024. But they sell at ordinary market prices of about $450,000 to $600,000, the printers are specialised and the land, permits and materials still have to be bought. Printing walls is not the same as removing scarcity, so we set the median well into the future. 12

  2. WALK-2

    Research that can end death, by capturing and continuing a person's mind, becomes workable and sets off a war over who controls it.

    FARMajorEst. 2120 · range 2080–2250+Confidence: low

    Weight 4/5 · Major: it is what turns the walkaway movement into a war with the elite.

    The best wiring map of a mammalian brain is one cubic millimetre of mouse cortex, published in April 2025, with about 200,000 cells and 523 million synapses. That covers around 0.2 per cent of a mouse brain, and a human brain is far larger. Mapping is also only a first step towards running a mind. The range assumes it happens at all. 34

  3. WALK-3

    A wealthy elite funds the search for radical life extension and tries to keep the results for itself.

    ARRIVINGSupportingEst. 2032 · range 2028–2050Confidence: medium

    Weight 3/5 · Supporting: the elite's wish to live for ever drives the conflict, though the plot turns on the walkaways' research.

    Very rich backers are funding ageing research: Altos Labs launched in January 2022 with $3 billion, with Yuri Milner named as an early investor and Jeff Bezos reported but not confirmed. Its stated aim is reversing disease and injury by cellular rejuvenation, not defeating death, and no therapy has reached the market. The funding exists today. The exclusive access the book imagines does not yet. 56

  4. WALK-4

    Automation leaves a large share of people without stable paid work, in a precarious 'non-work' economy.

    NEARSupportingEst. 2045 · range 2033–2075Confidence: low

    Weight 3/5 · Supporting: the precarity of Default is what makes Hubert, Seth and Natalie leave.

    Exposure is high: the IMF estimated in January 2024 that almost 40 per cent of jobs worldwide are exposed to AI. But exposure is not loss. A Yale Budget Lab study found no economy-wide change in US employment or unemployment in the first 33 months after ChatGPT's launch. Precarious gig work is already ordinary, but mass non-work is not here. 78

Evidence
  1. FOR A robotics company has 3D printed nearly a hundred homes in Texas. Engadget, 2024-08-08. ICON and Lennar have printed nearly 100 homes in Georgetown, Texas, with more than a quarter sold.
  2. AGAINST Wolf Ranch Model. Dezeen, 2023-07-21. The first completed house is a model for buyers of a conventional development, not a free or self-built settlement.
  3. CONTEXT Scientists complete largest wiring diagram and functional map of the brain to date. Allen Institute, 2025-04-09. A one-cubic-millimetre sample of mouse visual cortex, with 523 million synapses, sets the stage for scaling but gives no timeline.
  4. AGAINST Biggest Brain Map Ever Shows Mouse Neurons in Stunning Detail. Scientific American, 2025-04-09. Reports that the map covers around 0.2% of the mouse's brain, a reminder of the scale gap to a whole human brain.
  5. FOR Billionaire-backed 'rejuvenation' start-up Altos Labs launches operations. pharmaphorum, 2022-01-20. Altos launches with a reported $3 billion to pursue cellular rejuvenation.
  6. CONTEXT 'Disease-Reversing' Biotech Startup Altos Launches With $3B War Chest In 3 Cities. Bisnow, 2022-01-20. Names Milner as an early funder, describes Bezos's role only as rumoured, and gives the aim as reversing disease and injury.
  7. FOR AI Will Transform the Global Economy. Let's Make Sure It Benefits Humanity. International Monetary Fund, 2024-01-14. Almost 40% of global employment, and about 60% of jobs in advanced economies, are exposed to AI.
  8. AGAINST AI has had zero effect on jobs so far, says Yale study. The Register, 2025-10-01. Yale Budget Lab finds no economy-wide link between AI exposure and changes in US employment in the 33 months after ChatGPT.

Ledger updated 5 Nov 2026. Open this ledger as its own page · The P(n) Board · Method

Cover of the Tor Books first edition. Cover design by Will Staehle.

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