This excerpt is from a conversation between Sebastian Mallaby, author of *The Infant Machine*, and an interviewer. The host is a self-described fan of Mallaby's previous work, particularly *The Power Law*, which explored venture capital through a group portrait. She asks why he chose to write a biography focused on a single person—Demis Hassabis, founder of Google DeepMind—rather than continuing with his familiar ensemble approach.
Mallaby explains that a single-life narrative becomes compelling when you find an individual whose personal journey maps perfectly onto a broader historical shift. He compares it to his earlier biography of Alan Greenspan: Greenspan’s two-decade tenure as Fed chair and his long involvement in financial policy made his life story synonymous with the making of modern American finance. Hassabis offers an even tighter fit. From the 1990s, when AI couldn't even recognize a cat, Hassabis was convinced it would eventually work. By tracing his intellectual development, you effectively capture the entire arc of artificial intelligence—from near-futility to today’s astonishing capabilities.
But the real insight Mallaby gained through more than thirty hours of interviews, plus conversations with Hassabis’s colleagues and competitors, is a psychological paradox: Hassabis’s purity of focus is both his greatest strength and his most consequential blind spot. On first meeting, he comes across as extremely charming, normal, and approachable—a genius who speaks plain language. However, every human has blind spots, and Mallaby observes that Hassabis holds a deep belief that he should not control people. This ethos, partly rooted in his upbringing by a religious mother from Singapore who taught him to respect others, shapes his leadership style. While this purity fuels his conviction and makes him an inspiring figure, it can also translate into a kind of rigidity—an underappreciation for the messy, power-laden dynamics that inevitably arise in large organizations and competitive landscapes.
Mallaby does not frame this as a flaw but as the hidden dimension of a transformative innovator. The same single-mindedness that allowed Hassabis to ignore decades of academic skepticism and push toward general artificial intelligence—culminating in breakthroughs like AlphaGo—also leaves him somewhat blind to the political and commercial challenges that followed, especially after DeepMind was acquired by Google. This duality is a hallmark of many visionary leaders: the flame that ignites a revolution can sometimes burn the revolutionaries themselves.
In the end, what seems like a question about writing technique becomes a meditation on the nature of technological change and the personalities that drive it. By drilling deep into one extraordinary life, Mallaby shows that to understand a defining moment in history, you sometimes need only one person’s story—their purity, their vision, and the costs they didn’t see coming.
