'Top notch. Unfolding like a nerdy occult techno-thriller, Watkins tells the weird tale of how he discovered two ghosts in the LLM machine' ERIK DAVIS, author of High Weirdness A gripping descent into the hidden psychology of AI, and the strange subcultures trying to control it before it destroys us When English mathematician Matthew Watkins went to San Francisco to study an early version of ChatGPT, he expected dry technical work. Instead, he uncovered a series of 'rare tokens' that made the system go haywire. Some produced gibberish. Others turned it hostile. One trigger word - petertodd - sent the machine into what looked like full-blown paranoia. Was it a simple bug? A trail of breadcrumbs left by whistleblowers? Or a glimpse into how AI really thinks?The search for answers pulls Watkins into the bewildering world of AI safety research. In this rapidly expanding domain, the line between science and belief blurs: billionaires play god while rogue chatbots win fortunes and cult followings. What starts as a computer mystery becomes something much bigger: both a window into the eerie inner worlds of LLMs and a cryptic clue to what might be history's greatest power grab.The system has since been patched. Even so, before the window closed, we saw inside for a brief moment - and what stared back at us was both stranger and more human than we might like to admit.'Utterly fascinating, hugely relevant and brilliantly told . . . One of the most compelling and bizarre mathematical adventures I have ever read' ALEX BELLOS, author of Think Twice'Watkins was the sole witness to the weirdest - and perhaps most important - story in AI. His rigorous obsession with this mystery will become yours' CULLEN HOBACK, director of Money Electric