In 1953, Isaac Asimov published an article titled "Social Science Fiction" in Modern Science Fiction. In that article he stated that every science fiction plot ultimately falls into one of three categories: Gadget, Adventure, or Social. To demonstrate what he meant by each, he used the example of three different late nineteenth century authors all being inspired to write new stories about the automobile, each going in one of three directions: Or, to paraphrase it briefly: Please, No Examples, at least in the main page. However, feel free to list this on a work's trope page and discuss it there.