In a field dominated by flamboyant visionaries and ego-driven titans, Sebastian Mallaby's new biography presents a startling counter-narrative: the most pivotal figure in the race for artificial general intelligence is a man who deliberately blends into the background. Babbage argues that this very ordinariness is not a flaw, but the essential feature that makes Demis Hassabis the only plausible steward for a technology that could redefine human existence.
The Quiet Architect
Babbage opens by contrasting Hassabis with his high-profile rivals, noting that while the cover of The Infinity Machine features a blurred portrait meant to evoke a "Star Trek transporter-like dissolving of the human form," the reality is far more grounded. "Hassabis seems quite strikingly - for want of a better word - normal," Babbage writes, observing that he drives a modest family car and lacks the "'reality distortion field' that Steve Jobs was able to deploy." This framing is crucial; it sets up a binary choice for the reader between the chaotic ambition of competitors and the steady, almost boring, reliability of DeepMind's leader.
The author leverages this contrast to critique the current leadership landscape in Silicon Valley. By juxtaposing the book's release with a recent New Yorker profile questioning the trustworthiness of Sam Altman, Babbage suggests that the public's anxiety about AI leadership is well-founded. "The title of the profile - Sam Altman May Control Our Future—Can He Be Trusted? - somewhat unsubtly invites the reader to invoke Betteridge's Law and reply 'no' from outset," Babbage notes. In this context, the biography serves as a reassuring antidote, portraying a leader whose "lack of controversy over its nearly 400 pages leaves the reader with the sense that Hassabis really is someone who can be trusted."
The portrayal of Hassabis plainly seeks to reassure that we'd probably prefer him, rather than Musk or Altman, be the first to lead the world to Artificial General Intelligence.
Critics might argue that this focus on personality distracts from the systemic risks inherent in the technology itself, regardless of who holds the keys. However, Babbage's point is that in a race toward the unknown, the character of the driver matters immensely when the brakes might fail.
The Sweetness of Discovery
The commentary then pivots to the most profound ethical dilemma facing the industry: the inevitability of progress versus the potential for catastrophe. Babbage anchors this discussion in a conversation between Deep Learning pioneer Geoffrey Hinton and philosopher Nick Bostrom, capturing the tragic irony of scientific curiosity. "I am in the camp that is hopeless," Hinton informed Bostrom, admitting that political systems would likely use the technology "to terrorize people." Yet, when pressed on why he continues the work, Hinton's answer reveals the driving force of the entire field: "But the truth is that the prospect of discovery is too sweet."
This sentiment echoes the historical precedent of the atomic age, a connection Babbage makes explicit by quoting J. Robert Oppenheimer: "When you see something that is technically sweet, you go ahead and do it. You argue about what to do about it only after you have had your technical success." The author uses this historical parallel to frame the current AI boom not as a series of corporate decisions, but as a force of nature that even its creators struggle to control. The argument here is compelling because it strips away the corporate PR and exposes the raw, almost fatalistic, momentum of scientific inquiry.
Babbage illustrates Hassabis's own internalization of this dynamic through his disinterest in material wealth. In a telling exchange, Hassabis reveals he has lived in the same attic for over a decade, owning no yachts or ski chalets, and possessing only "some first editions of Shannon's papers" as collectibles. This reinforces the narrative that his motivation is purely intellectual. "My goal is to understand nature," Hassabis states, describing the pursuit of AI as "reading the mind of God." This spiritual framing elevates the work beyond mere commerce, suggesting a moral imperative to solve the puzzle of intelligence, regardless of the cost.
The Race and the Machine
Despite the portrait of a benevolent scientist, Babbage does not shy away from the brutal realities of the commercial race. The biography details how DeepMind, despite early insights, ceded leadership in Large Language Models to OpenAI after the launch of ChatGPT. "Hassabis was not just furious. He was furiously competitive," Babbage writes, capturing the moment the scientist was forced to become a sprinter. The author argues that this shift illustrates "the forces of technological determinism," where even a leader who wishes to slow the march to AGI sees "no choice but to rush forward."
However, Babbage identifies a significant blind spot in Mallaby's narrative: the near-total absence of the hardware that makes these models possible. "Moore's Law is mentioned early on and then forgotten," the author observes, noting that "Nvidia gets precisely one mention in the main body of the book." This omission is critical. By focusing so heavily on the human drama, the book risks obscuring the economic and physical realities of the AI boom. The computational power required to train these models is a massive, resource-intensive endeavor that drives global supply chains and energy consumption, yet the "machines themselves... go largely unremarked on."
The Infinity Machine is largely disinterested in the machines. There are descriptions of the technical details of the models which are short and highly readable even if they sometimes seem a little 'walled off' from the rest of the narrative.
This oversight is a double-edged sword. While it keeps the narrative focused on human agency and ethics, it leaves the reader with an incomplete picture of the infrastructure required to sustain the race for superintelligence. A counterargument worth considering is that the human element is the only variable that can be influenced; the hardware is merely the stage. Yet, ignoring the stage makes it difficult to understand the true scale of the production.
The Human Steward
Ultimately, the book returns to the question of governance. Hassabis argues that AGI is "infinitely bigger than a company or a person or a set of owners," and that "humanity should run it." But as Babbage points out, the immediate reality is a scramble for control among private entities and governments. The administration and the Department of War are already embroiled in disputes over the use of powerful models, highlighting the gap between the ideal of a human-run future and the current reality of corporate and state competition.
Babbage concludes that while The Infinity Machine may suffer from being too close to its subject, it succeeds in its primary mission: to humanize the figure standing at the helm of the most consequential technology of our time. "I'll just have to do the best I can," Hassabis says, a humble admission that feels more reassuring than any grandiose promise of safety.
Bottom Line
Babbage effectively argues that in an era of high-stakes technological competition, the quiet, unassuming character of Demis Hassabis may be our best defense against the chaos of unchecked ambition. The biography's greatest strength is its refusal to mythologize its subject, instead presenting a man driven by curiosity and a deep sense of responsibility, even as he is swept up in a race he cannot fully control. However, the work's significant vulnerability lies in its neglect of the hardware and economic forces that power this race, leaving the reader with a compelling human story but an incomplete understanding of the machinery driving the future.