Bacteria to AI: Human Futures with Our Nonhuman Symbionts

by N. Katherine Hayles

A new theory of mind that includes nonhuman and artificial intelligences.
 
The much-lauded superiority of human intelligence has not prevented us from driving the planet into ecological disaster. For N. Katherine Hayles, the climate crisis demands that we rethink basic assumptions about human and nonhuman intelligences. In Bacteria to AI, Hayles develops a new theory of mind—what she calls an integrated cognitive framework (ICF)—that includes the meaning-making practices of lifeforms from bacteria to plants, animals, humans, and some forms of artificial intelligence. Through a sweeping survey of evolutionary biology, computer science, and contemporary literature, Hayles insists that another way of life, with ICF at its core, is not only possible but necessary to safeguard our planet’s future

Genres: Artificial Intelligence, Nonfiction, Philosophy

293 pages, Kindle Edition

Published February 12, 2025

Reviews

[RoaringRatalouille · Rating 3 out of 5]

Can't speak for the entire book, only read some chapters. But it was mainly the first chapter, "An Integrated Cognitive Framework", the struck me as interesting and innovative. Here, Hayles pushes her previous work on nonconscious cognition forward so as to provide a new way to think beyond anthropocentrism. She juxtaposes "origin stories of quantum mechanisms (origin of phenomena) with evolutionary biology (origin of multicellular bodies) and technics (origin of the human)" in order to show their increasing entanglements via such technologies as quantum computers, gene editing, or AI (p. 2). She dubs this approach "micro/evo/techno relationality"; micro drawing from Barad, evo from Haraway, and techno from Bernard Stiegler. To understand cognition today, the book's argument goes, we must attend to the interrelations between different scales: entanglements of life, matter, and technology. Her concept of "technosymbiosis" is further meant to highlight these interactions.

Some of the later chapters were interesting (chapters 2 and 6 were alright), others were quite disappointing. For instance, chapter 7 lends far too much credence to imaginaries of different AI models' "cognitive" abilities. Also, chapter 9 sadly dedicates a little too much time and space to time arguing against Yuval Harari's "Homo Deus" (when most people have stopped taking him seriously as a "historian" at this point).

Nonetheless, still recommend the book for its quite interesting conceptual discussion in the beginning where Hayles articulates a really subtle take on Barad's "diffractive methodology", the issues with Haraway's "sympoesis", and Stiegler's emphasis on regulation as a response to technology.

[Katie Meyers · Rating 5 out of 5]

Bacteria to AI: Human Futures with Our Nonhuman Symbionts is a bold, intellectually sophisticated, and remarkably original work that challenges readers to fundamentally reconsider the nature of intelligence, cognition, and humanity's place within a larger network of living and artificial systems. N. Katherine Hayles presents a compelling vision that moves beyond traditional human-centered models of thought, introducing an integrated cognitive framework that embraces meaning-making across organisms ranging from bacteria and plants to animals, humans, and certain forms of artificial intelligence. The result is a transformative contribution that bridges philosophy, science, technology, and environmental thought with exceptional clarity and depth.

One of the book's greatest strengths is its extraordinary interdisciplinary scope. Hayles masterfully synthesizes insights from evolutionary biology, artificial intelligence, cognitive science, computer science, philosophy, and contemporary literature to construct a coherent framework for understanding cognition as a distributed phenomenon rather than an exclusively human capacity. By questioning long-held assumptions about intelligence and agency, the book encourages readers to rethink the relationships between biological organisms, technological systems, and the environments they collectively inhabit.

What makes Bacteria to AI particularly compelling is its profound relevance to many of the defining challenges of our time. Hayles convincingly argues that the ecological crisis requires not merely technological innovation but a fundamental transformation in how we conceptualize intelligence, cooperation, and coexistence across species and artificial systems. Her integrated cognitive framework offers a powerful philosophical foundation for addressing questions surrounding climate change, artificial intelligence, sustainability, ethics, and the future of life on Earth. Rather than presenting these issues in isolation, the book demonstrates how they are deeply interconnected within a shared cognitive ecosystem.

Carefully argued, exceptionally well researched, and intellectually transformative, Bacteria to AI: Human Futures with Our Nonhuman Symbionts makes an important contribution to the fields of philosophy of mind, artificial intelligence, cognitive science, environmental humanities, science and technology studies, systems theory, posthumanism, and interdisciplinary scientific inquiry. It is an essential resource for philosophers, scientists, AI researchers, educators, environmental scholars, graduate students, policymakers, and anyone seeking a deeper understanding of intelligence, ecological responsibility, and humanity's evolving relationship with the nonhuman world.

[Elisabeth K. · Rating 5 out of 5]

What makes this book remarkable is how effortlessly it bridges worlds that normally feel disconnected. One moment Hayles is discussing evolutionary biology and microbial communication, and the next she’s unpacking AI systems, literature, cybernetics, and philosophy. Instead of feeling chaotic, the entire book feels surprisingly unified by one central idea: cognition exists on a spectrum that stretches far beyond humans.

As someone with a background in science, I appreciated how carefully Hayles approaches complex biological concepts without oversimplifying them. The sections discussing symbiotic systems and distributed cognition were fascinating because they challenged the traditional idea that intelligence must look human to matter. At the same time, the literary and philosophical references gave the book emotional and cultural depth that purely scientific books often lack.

I also appreciated that the author doesn’t present AI in an alarmist or sensationalized way. She neither worships technology nor fears it blindly. Instead, she situates AI within broader ecological and cognitive systems, which felt refreshingly nuanced compared to most current conversations around artificial intelligence.

This is the kind of book that rewards slow reading. It’s thoughtful, provocative, and deeply relevant to the moment we’re living in.

[Thomas Walter · Rating 5 out of 5]

I came into this book expecting another discussion about artificial intelligence, but what I found was something much bigger: a meditation on survival, coexistence, and the future of life on Earth. Hayles argues that humanity’s biggest problem may not be technological advancement itself, but our refusal to see ourselves as interconnected with nonhuman systems.

That idea alone reshaped my perspective. The book repeatedly returns to the ecological consequences of human exceptionalism, and honestly, it’s difficult not to reflect on our current environmental crises while reading it. Hayles doesn’t just criticize human-centered thinking, she offers an entirely new framework for imagining collective existence.

What struck me emotionally was how hopeful the book feels despite addressing enormous global problems. Instead of presenting humanity as doomed, Hayles suggests that new ways of thinking and relating, to AI, to ecosystems, to other life forms, could open pathways toward survival and adaptation.

It’s rare for a book to feel simultaneously philosophical, scientific, and deeply personal. I found myself stopping after certain chapters just to sit with the ideas. This isn’t casual reading, but it’s absolutely worthwhile for anyone thinking seriously about the future of our planet.

[Emmanuel Jack · Rating 5 out of 5]

I’ve read dozens of books on AI over the past few years, and most of them fall into predictable categories: either they celebrate technological progress or warn about existential disaster. Bacteria to AI: Human Futures with Our Nonhuman Symbionts does something entirely different. Rather than focusing solely on what AI can do, Hayles asks us to reconsider the framework through which we define intelligence itself.

That shift makes this book incredibly important. Instead of treating AI as an isolated technological phenomenon, Hayles places it within a continuum that includes biological systems, ecosystems, bacteria, plants, and humans. It’s one of the few books I’ve encountered that genuinely expands the conversation rather than repeating familiar talking points.

The writing is intellectually demanding at times, but there’s also something deeply rewarding about engaging with a thinker who refuses simplistic answers. Hayles trusts her readers to think critically, and that trust makes the reading experience feel collaborative rather than didactic.

By the end, I realized this wasn’t just a book about AI, it was a book about humility. About recognizing that intelligence may exist in forms we’ve ignored simply because they don’t resemble ourselves.

[Eva Raušová · Rating 5 out of 5]

As a graduate student working between literature and media studies, this book felt like discovering exactly the kind of interdisciplinary scholarship I aspire to engage with. Hayles manages to combine theoretical sophistication with genuine urgency, creating a work that feels academically rigorous while also deeply relevant to contemporary life.

The integrated cognitive framework is one of the most compelling concepts I’ve encountered recently. Rather than positioning cognition as an exclusively human process, Hayles presents meaning-making as distributed across biological and technological systems. That perspective has huge implications, not only for AI studies, but for environmental humanities, philosophy, and cultural theory.

I especially appreciated how the book draws from such a broad range of disciplines without becoming inaccessible. Yes, some chapters require careful attention, but Hayles consistently grounds abstract theory in real-world examples and cultural contexts.

This is exactly the kind of scholarly work that pushes conversations forward instead of merely summarizing existing debates. I can already tell this will become a book I revisit repeatedly throughout my academic work.

[Yahya Sjögren · Rating 5 out of 5]

I rarely write long reviews, but this book genuinely deserves one. Reading it felt less like consuming information and more like undergoing a shift in perception. By the end, I found myself thinking differently about intelligence, nature, technology, and even everyday interactions with the world around me.

Hayles proposes that cognition exists across networks of life and technology, and once you start viewing the world through that lens, it becomes surprisingly difficult to return to older assumptions. Suddenly ecosystems feel more communicative, machines feel less isolated from human systems, and the boundaries between “natural” and “artificial” begin to dissolve.

What impressed me most was the courage of the book. Hayles isn’t afraid to challenge dominant ideas about human superiority or technological centrality. At a time when society feels trapped between ecological anxiety and technological acceleration, this book offers an entirely different way of imagining coexistence.

It’s intellectually ambitious, emotionally resonant, and deeply relevant to the future we are all moving into. I can confidently say this is one of the most thought-provoking books I’ve read in years.

[Miroslav Svoboda · Rating 5 out of 5]

Some books give you information. Others completely reorganize how you think. This book belongs firmly in the second category.

Reading Bacteria to AI: Human Futures with Our Nonhuman Symbionts felt like having the walls of familiar thought slowly dismantled. Hayles challenges deeply ingrained assumptions about intelligence, consciousness, agency, and even individuality. The argument that cognition can emerge through networks, systems, and interactions, not just within human minds, is genuinely transformative.

What amazed me most was the ambition of the book. Few authors attempt to synthesize biology, artificial intelligence, ecology, literature, and philosophy into one cohesive framework, but Hayles somehow succeeds. Even when I occasionally struggled with the density of the material, I never felt lost because the central ideas remained so compelling.

This is not trendy futurism designed to generate fear or excitement. It’s a serious intellectual attempt to rethink humanity’s relationship with the nonhuman world. And honestly, it feels necessary.

Books like this remind me why reading matters. They don’t just entertain; they expand the boundaries of thought.

[James William · Rating 5 out of 5]

This was my first experience reading N. Katherine Hayles, and now I completely understand why she’s so respected in discussions about technology and posthumanism. The scope of this book is astonishing.

I expected a straightforward examination of AI, but instead I found a profound exploration of interconnected life. Hayles moves from microbial systems to machine intelligence in ways that constantly reveal parallels I had never considered before. The result is a book that feels simultaneously scientific, philosophical, and poetic.

There were moments when I had to slow down and reread sections, but I actually appreciated that challenge. The complexity reflects the seriousness of the subject matter. Hayles clearly respects her readers enough not to oversimplify.

What stayed with me most was the emotional undercurrent beneath the theory. Despite the academic language, the book is ultimately about coexistence, adaptation, and survival in an increasingly unstable world. That gave the work a humanity I wasn’t expecting.

I’ll definitely be reading more of Hayles after this.

[Anna Björklund · Rating 5 out of 5]

I picked up this book expecting a discussion centered mainly on artificial intelligence, algorithms, and where technology is taking humanity. Instead, I found myself entering a much larger conversation about life itself. Hayles doesn’t simply ask what AI can do; she asks what cognition actually means and whether humans have been defining intelligence too narrowly all along.

What I appreciated most was how the book made me question assumptions I didn’t even realize I had. We often assume intelligence belongs at the top of some hierarchy with humans sitting comfortably at the highest point. Hayles gently but powerfully disrupts that idea. I finished this book feeling mentally stretched in the best way possible.

[Claire James · Rating 5 out of 5]

This book felt deeply relevant to the world we are living in right now. I initially came for the AI discussions, but I stayed for the broader message about humanity's relationship with the planet. Hayles argues that our habit of placing ourselves above everything else may be one of the reasons we struggle with ecological crises today.

I found myself thinking about ecosystems, nature, and even ordinary life differently after reading this. It’s not often a book changes the way I look at the world around me, but this one absolutely did.

[Jones John · Rating 5 out of 5]

As someone who enjoys interdisciplinary scholarship, this book was incredibly rewarding. Hayles combines biology, literature, philosophy, and technology in a way that somehow feels both ambitious and coherent.

The integrated cognitive framework is one of the most interesting concepts I’ve encountered recently. The book requires attention and patience, but it rewards readers with ideas that feel fresh and important. I suspect I’ll revisit this book more than once because there is so much layered into it.

[Daisy Brown · Rating 5 out of 5]

I started this book with hesitation because I wasn’t entirely convinced by the premise. I questioned whether expanding cognition beyond humans and advanced intelligence systems would feel convincing. To my surprise, Hayles made me pause several times and rethink my position.

I didn’t agree with every argument, but I respect books that challenge my thinking rather than simply reinforcing what I already believe. Even disagreement became part of the reading experience, and that made the book more valuable to me.

[Jon Spittle · Rating 5 out of 5]

Finishing this book felt less like reaching the end of a story and more like stepping out of a long conversation. I found myself still thinking about it days later.

What I admired most was the humility at the heart of Hayles’ argument. Rather than placing humans above everything else, she encourages us to imagine ourselves as participants in larger systems of life and meaning. Whether readers agree with every point or not, I think this book succeeds in something important: it opens doors to entirely new ways of thinking.

[Alexa · Rating 5 out of 5]

I picked this up expecting another philosophical take on artificial intelligence, but it surprised me. As someone who works with models daily, I’ve always thought of AI as tools powerful, yes, but separate. Hayles flips that idea completely. She made me reconsider AI as part of a broader cognitive ecosystem, not just something we build but something we coexist with. It’s not a light read, but it’s one that lingers in your thinking long after.

[Danielle Scarlett · Rating 5 out of 5]

Some books provide information; others fundamentally reshape perspective. This one belongs in the second category.

I loved how Hayles explores the dissolving boundaries between human and machine, natural and artificial, individual and system. It raises questions that feel increasingly important in our era of rapid technological change. I found myself highlighting passages constantly because almost every chapter contained ideas worth returning to.

[Dollad Kenneth · Rating 5 out of 5]

I’ll be honest: parts of this book challenged me quite a bit. Some sections required slower reading and occasional rereading. But despite that, I found myself genuinely fascinated by the ideas being discussed.

What stayed with me most was the suggestion that humans might not be isolated thinkers operating above everything else. We exist within systems, and we are shaped by those systems too. That idea stayed with me long after I finished the final chapter.

[Edward Isabella · Rating 5 out of 5]

I really appreciated the way Hayles approaches science in this book. Instead of reducing biology to facts and technical language, she shows how scientific ideas connect with broader human questions.

The discussions involving bacteria and distributed systems were especially fascinating because they challenge familiar ideas about intelligence and adaptation. I loved seeing science used not just to explain the world but to question how we understand ourselves.

[Farah · Rating 5 out of 5]

In a world filled with books predicting either technological utopia or disaster, this one felt refreshingly different. Hayles avoids sensationalism and instead asks readers to think more carefully about what intelligence actually means.

I appreciated that AI was presented as part of larger networks and relationships rather than some isolated force suddenly appearing in human history. The result feels thoughtful, balanced, and intellectually mature.

[Reader · Rating 5 out of 5]

I love books that make me stop reading and simply stare at the wall for a minute because I need time to process what I just read. This book gave me that experience repeatedly.

There were moments where I realized I had never questioned ideas that seemed obvious before—ideas about intelligence, individuality, and humanity's place in the world. Hayles asks readers to think differently, and she does so with incredible depth and confidence.

[Haala · Rating 5 out of 5]

This book hit me harder than most climate reads. Instead of focusing on policy or catastrophe, it asks something deeper: what if we’re thinking about intelligence and our place in nature completely wrong? The idea that bacteria, plants, and even ecosystems “participate” in cognition reframed how I see environmental responsibility. It’s philosophical, yes, but also quietly urgent.

[Barry Washington · Rating 5 out of 5]

Reading Hayles feels like stepping into a conversation where science and storytelling collide. I loved how she moves from biology to literature without losing coherence. At times it felt dense, but that’s part of the reward you’re not just reading, you’re thinking alongside her. This is the kind of book that changes how you approach texts, not just how you read them.

[Tim Kendall · Rating 5 out of 5]

I’ll admit, I started this book rolling my eyes at the premise. “Bacteria have cognition?” It sounded like a stretch. But somewhere along the way, the argument started to make sense not literally in a human way, but as a broader definition of meaning-making. I didn’t agree with everything, but I respected the intellectual courage. It’s rare to read something that challenges you this much.

[Collins Adrien · Rating 5 out of 5]

If you’re interested in where AI is heading, this book is essential. Not because it predicts the future, but because it reshapes the framework for thinking about it. Hayles isn’t asking what AI will do she’s asking what intelligence itself is. That shift is profound. It made me rethink everything from machine learning ethics to human identity.

[Collins Gregor · Rating 5 out of 5]

What fascinated me most was how she connects microbial life to complex systems of thought. As someone who loves biology, I’ve always appreciated how intelligent natural systems can be but I never saw them framed this way. It’s like zooming out and realizing intelligence isn’t a ladder it’s a network.

[Diane · Rating 5 out of 5]

I won’t lie this book challenged me. Some sections required rereading, and I occasionally felt out of my depth. But even then, certain ideas stuck with me, especially the notion that humans aren’t the center of everything. It’s the kind of book that stretches you, even if you don’t fully grasp every part.

[Emily · Rating 5 out of 5]

This is one of those rare books that doesn’t just argue it redefines the terms of the argument. The integrated cognitive framework is ambitious, maybe even radical, but it’s also necessary. In a time when boundaries between human, machine, and nature are blurring, Hayles gives us a language to think about it.

[Jennifer · Rating 5 out of 5]

Hayles demonstrates an impressive synthesis of disciplines evolutionary biology, AI, literary theory all woven into a cohesive argument. It’s dense but rewarding. What stands out is not just the breadth of knowledge but the clarity of her central idea: cognition is not exclusively human. This book will likely influence academic discussions for years.

[Houston · Rating 5 out of 5]

I found this book unexpectedly inspiring. The idea that meaning-making exists beyond humans opens up so many creative possibilities. It made me think differently about characters, environments, even narratives themselves. It’s less about plot and more about perception how we interpret the world.