Farmer, Philip José. "Sail On, Sail On"
Divergence: 1290 CE
What if: The world was flat, and Bacon developed a radio from theological principles.
Summary: Columbus sails off the edge of Earth.
Comments: The Worlds of Maybe publication of this story is followed by a several page commentary by Farmer on the rationale behind such a world.
Published: In Startling Stories, December 1952; A Century of Science Fiction (ed. Damon Knight), Simon & Schuster 1962; Worlds of Maybe: Seven Stories of Science Fiction (ed. Robert Silverberg), q.v.; Decade: The 1950's (eds. Brian Aldiss and Harry Harrison), Macmillan 1976 (0333190017), St. Martin's 1978 (0312189850?), 1980 (03121898707); SF: Author's Choice (ed. Harry Harrison), Berkley 1968, 1976; The Road to Science Fiction #3: From Heinlein to Here (ed. James Gunn), NAL/Mentor 1979 (0451617843), White Wolf 1996 (1565048210BUY); A Treasury of Modern Fantasy (eds. Terry Carr and Martin H. Greenberg), Avon 1981 (0380771152); The Classic Philip José Farmer, 1952-1964 (ed. Martin H. Greenberg), Crown 1984 (0517551934), SFBC 1984; Isaac Asimov Presents the Great SF Stories: 14 (1952) (eds. Isaac Asimov and Martin H. Greenberg), DAW 1986 (0886771064); and Masters of Fantasy (eds. Terry Carr and Martin H. Greenberg), Galahad 1992, Bristol Park 1994 (0884860949).
Original in: English.
Translation: French by Martine Renn as "Par delà l'océan", in Histoire de la 4ègme dimension (ed. [[editor unknown]]), Livre de Poche 1986 (2253032956).
Translation: German by Ronald M. Hahn as "Weitersegeln! Weitersegeln!", in Das Lächelm der Gioconda (ed. René Oth), Luchterhand 1985.
Translation: Italian by Giampaolo Cossato and Sandro Sandrelli as "Salpa! Salpa!", in Le grandi storie della fantascienza 14 (eds. Isaac Asimov and Martin H. Greenberg), SIAD 1986 (8844301350), Bompiani 1996 (8845227170).