Rather than being a narrative, "Stet" is presented as a scientific paper analyzing the principles by which self-driving cars make decisions. The paper is interspersed with suggestions to remove or change content which the journal editor finds inappropriate, to each of which the paper's author responds "stet". (wikipedia)
The story is built by three linked texts. The body of the scientific paper, the linked footnotes and the linked editorial comments and responses from the "author". On first reading the scientific paper seems very unpersonal and academic. But as we read the footnotes and comments we slowly learn that a young girl has been killed in a road accident involving a self-driving car, the author blames the AI tech, Toyota, and our society in general for her death, and finally we learn that the young girl is the author's daughter.