Tim Urban

Tim Urban is an American writer and illustrator who co-founded the long-form blog Wait But Why with Andrew Finn in 2013, after graduating from Harvard in 2004. His stick-figure-illustrated deep dives — on procrastination, Mars, Neuralink, and existential risk — earned millions of readers, a famously devoted fan in Elon Musk, and one of the most-watched TED talks ever. His book “What’s Our Problem?” appeared in 2023.

The explainer that primed a generation

In January 2015 Urban published the two-part series “The AI Revolution: The Road to Superintelligence,” translating Nick Bostrom, Ray Kurzweil, and the academic AI-risk literature into accessible graphs and jokes. For countless readers — including many who later joined AI labs — it was their first encounter with the ideas of AGI and superintelligence, laid out as a road “we may or may not survive.”

The series presented both the “confident corner” of radical abundance and the anxious camp of existential risk, but its lasting cultural effect was to make the transformative upside vivid: digital immortality, solved diseases, an intelligence explosion arriving on exponential time. Ray Kurzweil’s optimism reached millennial tech culture largely through Urban’s stick figures, and Musk has repeatedly pointed readers to the essays.

He also refused to land. The series closes with Urban wanting “us to take our time and be incredibly cautious about AI” — “nothing in existence is as important as getting this right” — and then immediately admitting that thinking about not dying pulls him the other way, before conceding to “a lotta this flip-flopping going on in my head.” He has remained an engaged enthusiast in the ChatGPT era, marveling publicly at generative-model progress while keeping that two-sided framing. Critics note that his 2015 synthesis leaned heavily on futurist sources and compressed real scholarly disagreement; defenders answer that a decade later, the essays read less like hype and more like a schedule.