Greg Barber
Science and technology journalist and regular Quanta contributor who reported the episode's story on ultrafinitism and discusses its history, philosophy, and applications.
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May 5, 2026 • 30min
What Can We Gain by Losing Infinity?
Greg Barber, science and technology journalist and Quanta contributor, explores ultrafinitism — the idea of rejecting mathematical infinity. He traces its history, explains formal approaches like bounded arithmetic, and recounts provocative thought experiments about unreachable numbers. The conversation covers practical ties to computer science and physics and asks whether core math can be rebuilt without infinity.
May 6, 2026 • 8min
Does AI save time in police work?
Greg Barber, a science and technology journalist who covered AI in policing for Proof News, walks through how departments are actually using AI today. He talks about tools that analyze footage, draft reports from bodycam audio, and the debate over whether these tools truly save time. He also covers costs, contractual bundling, and the legal and surveillance risks those systems raise.
