Hiroki Tomiyasu, a broccoli farmer in Hokkaido, Japan, has automated much of his 100-hectare operation using ChatGPT and Codex, despite having no background in engineering or agriculture. A former public servant who taught himself to farm, Tomiyasu uses AI to diagnose crop diseases from photos, build remote-control systems for greenhouse vents, integrate satellite vegetation data into field maps, and design farm-management databases. He likens the tools to having a skilled engineer constantly av