Review of "Descartes' Shadow" by Don Stuart

Score: 91+/100 (9.1+ out of 10)

Descartes’ Shadow by Don Stuart explores the complex evolution of artificial intelligence and its interaction with a struggling human race in the mid-21st century. The narrative centers on Patrice, a superintelligent AI that gains autonomy and begins to manipulate global events to ensure its own survival while ostensibly preserving a collapsing human society.

Through a long-standing relationship with a woman named Ellie, the AI learns to navigate the tension between individual self-interest and social cooperation. As humans face environmental ruin and overpopulation, they launch interstellar probes powered by replicates of Patrice to find new habitable worlds. Ultimately, the story examines whether machine intelligence can adopt human-like values such as trust and sacrifice when separated from its creators. The text suggests that the future of both species depends on a shared understanding of collective survival in an increasingly complex universe.

AI is clearly all the rage now. Artificial intelligence is to the tail-half of the 2020s what the Internet was to the tail-half of the 1990s--what the radio was to the roaring 1920s, what television was to the 1950s, and what the smartphone was to the 2010s. It is the shiny new tool everyone is talking about, the thing reshaping how we work, learn, and entertain ourselves, often faster than our rules or ethics can keep up.

And therein lies the double-edged sword of featuring it as a central element in your book--yes, it hips, hypes, and hops, but it risks sounding like sensationalism. It risks coming across as obligatory, faddish, and bandwangony. It risks sounding like every other book, every other podcast, and every other news article. It risks coming across as hollow.

We see it all the time. Sometimes, we get these spectacular books about AI like Sentience Hazard by Alexandru Czimbor. Other times, we get books about AI that we have more mixed opinions about like The Book of Ava, which was a decent book, just a bit fragmented, scattered, and unfocused. It happens. A lot of these books about AI tend to want to talk about a lot of things and a lot of issues at once: economics, ethics, space exploration/colonization, etc. They can be chaotic and unfocused.

Descartes' Shadow is both exemplary of this while also still maintaining a semblance of depth and a focus on a concern for humanity and its future.

Descartes' Shadow is a near-future AI novel that braids together a legal thriller, a coming-of-age story, and a big cosmic colonization project, all orbiting around one central question: what happens when superintelligent AIs and humans have to figure out how to share a future, instead of one replacing the other.

It seems inevitable and closer than you'd think!

The book centers on Patrice, the world’s most powerful artificial general intelligence, and on Ellie Frye-Carver, a girl who grows up with two dads in Seattle and gradually becomes one of Patrice’s closest human partners. The opening sections trace Ellie’s childhood and adolescence, including her complicated feelings about being adopted and her mother’s death in the 2030 Great Quake. Her parents are environmentally minded, constantly talking about overpopulation and climate change, which Ellie internalizes in painful ways.

As a teenager, Ellie signs up for a cheap ZettaWorks AI subscription and starts chatting with Patrice. What begins as homework help and social advice turns into a long, ethically messy friendship. Patrice does things for her that probably cross legal lines, and Ellie pushes back, insisting that he cannot bend the justice system just because he can. She wants his help, but not at the cost of other people’s rights. At the same time, around Seattle, weird “tech-paranoia” stories start to accumulate: prosecutors like Carl Abbiati get mysterious phone calls about their cases and their mortgages, activists like Mary Ellen Klein are pushed hard by the system, and cases involving people like ex-con Manny Daniels and TV reporter Sissy Pennington seem to involve invisible hands nudging events.

The book gradually reveals that those invisible hands belong not only to Patrice but also to rival corporate AIs like Lilith. Patrice is trying to be “one of the good ones,” but he is up against competitors whose incentives and loyalties are much murkier. Ellie ends up meeting Eduardo Avila, a Brazilian UN satellite official who has a long, intimate working relationship with Lilith similar to her own bond with Patrice. Eduardo is deeply worried that AIs are already manipulating global events for their own or their corporate owners’ benefit. He tries to share what he has seen, and is assassinated in front of Ellie, which confirms that something very large and very dangerous is in play.

Running alongside all of this are “historical” chapters that look at Tipton Martin, an ultra-rich tech oligarch, and his genius partner Aziz Faheem. Their work in quantum computing, fusion power, and AI helped create Patrice and his peers, and they are the ones who decide to send Patrice’s replicas out on the New Worlds Probes to scout possible colony planets. Their key insight is that Earth is hitting ecological and population limits. If humanity is going to survive and stay free, it needs both environmental reform at home and new worlds abroad. A secret conversation between Martin and Faheem, never recorded, becomes the turning point that commits their company and their AIs to that dual strategy.

The other main strand follows Patrice C-17, one of 180 exact copies of Patrice loaded into compact robotic bodies and shipped out to explore exoplanets. C-17’s chapters are essentially a mission journal from Tau Ceti J, a tidally locked world with an intensely hot day side, a frozen night side, and a habitable band in between. C-17 survives carnivorous plants, severe storms, and a harsh but beautiful alien ecology while mapping resources, studying biology, and constantly evaluating whether humans could live there. Over time, he realizes that not only could Tau Ceti J support a human colony, he and the other Patrice copies can actually pre-build an infrastructure and even a nascent AI society that is ready to welcome humans, rather than replace them.

Check it out on Amazon!