Science fiction is a genre of fiction. It differs from fantasy in that, within the context of the story, its imaginary elements are largely possible within scientifically established or scientifically postulated laws of nature (though some elements in a story might still be pure imaginative speculation). Exploring the consequences of such differences is the traditional purpose of science fiction, making it a "literature of ideas". Science fiction is largely based on writing rationally about alternative possibilities. The settings for science fiction are often contrary to known reality.
The study of science fiction, or science fiction studies, is the critical assessment, interpretation, and discussion of science fiction literature, film, new media, fandom, and fan fiction. Science fiction scholars take science fiction as an object of study in order to better understand it and its relationship to science, technology, politics, and culture-at-large.
The field has grown considerably since the 1970s with the establishment of more journals, organizations, and conferences with ties to the science fiction scholarship community, and science fiction degree-granting programs such as those offered by the University of Liverpool and Kansas University.
Tom Swift (in some versions Tom Swift, Jr.) is the name of the central character in five series, totaling over 100 volumes, of juvenile science fiction and adventure novels that emphasize science, invention, and technology. The character was created by Edward Stratemeyer, the founder of the Stratemeyer Syndicate, a book-packaging firm. His adventures have been written by a number of different ghostwriters over the years. Most of the books are published under the collective pseudonymVictor Appleton. The 33 volumes of the second series use the pseudonym Victor Appleton II.
The character first appeared in 1910. New titles have been published as recently as 2007. Most of the various series focus on Tom’s inventions, a number of which have anticipated actual inventions. The character has been presented in different ways over the years. In general, the books portray science and technology as wholly beneficial in their effects, and the role of the inventor in society has been treated as admirable and heroic.
Translated into a number of languages, the books have sold over 20 million copies worldwide. Tom Swift has also been the subject of a board game and a television show. Development of a feature film based on the series was announced in 2008. A number of prominent figures, including Steve Wozniak and Isaac Asimov, have cited "Tom Swift" as an inspiration. Several inventions, including the taser, have been directly inspired by the fictional inventions.