2015: Loosely based on a true story. You are a machine learning engineer at Facebook in Menlo Park. Your task: build the best butt classification model, which decides if there is an exposed butt in an image. The content policy team in D.C. has written country-specific censorship rules based on cultural tolerance for gluteal cleft—or butt crack, for the uninitiated. Germany: 0% cleft. Zimbabwe: 30% cleft. Cupertino: 0%. Montana: 20%. A PM on your team writes data labeling guidelines for a busines...