A Stanford study of 317 AI unicorns reveals that more than half have never published a single research paper, exposing a quiet contradiction at the center of an industry that presents itself as the vanguard of scientific progress. The concentration of knowledge is severe — a handful of prolific researchers at a handful of dominant firms generate nearly all the citations that exist. This silence is not an oversight but a strategy, one that increasingly sequesters the trajectory of transformative technology from the public discourse that might otherwise shape it.