A teenage boy in Guldborgsund, Denmark, is searching for a pirated stream of the newly released Project Hail Mary on YouTube. Five videos later, he is watching a man wearing a crisp Oxford shirt calmly making the case that immigration to Europe is eroding Western civilisation. The boy does not pause to think. He does not resist the idea. He now actively searches for content that feeds this narrative. By the third day, the algorithm, having already registered his latent prefer