Daniel John Alderson (October 31, 1941 – May 17, 1989) was a scientist at the Jet Propulsion Laboratory in California, and a prominent participant in science fiction fandom. He came from a middle-class family and had diabetes. A high school science fair project on the gravitational fields of non-spherical bodies won him a college scholarship to

Caltech The California Institute of Technology (branded as Caltech or CIT)The university itself only spells its short form as "Caltech"; the institution considers other spellings such a"Cal Tech" and "CalTech" incorrect. The institute is also occasional ...

and a job at the Jet Propulsion Laboratory, where he wrote the software used to navigate ''Voyagers'' 1 and 2. A member of the

Los Angeles Science Fantasy Society The Los Angeles Science Fantasy Society, Inc., or LASFS, is a science fiction and fantasy fan society that meets in the Los Angeles area. The current meeting place can be found on thLASFS website LASFS is the oldest continuously operating scienc ...

, an Official Editor of the

comic book A comic book, also called comicbook, comic magazine or (in the United Kingdom and Ireland) simply comic, is a publication that consists of comics art in the form of sequential juxtaposed panels that represent individual scenes. Panels are oft ...

APA CAPA-alpha, and an early member of gaming

fandom A fandom is a subculture composed of fans characterized by a feeling of empathy and camaraderie with others who share a common interest. Fans typically are interested in even minor details of the objects of their fandom and spend a significant ...

, he came into contact with a number of

science fiction Science fiction (sometimes shortened to Sci-Fi or SF) is a genre of speculative fiction which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel univers ...

writers, notably

Larry Niven Laurence van Cott Niven (; born April 30, 1938) is an American science fiction writer. His best-known works are ''Ringworld'' (1970), which received Hugo, Locus, Ditmar, and Nebula awards, and, with Jerry Pournelle, ''The Mote in God's Eye'' ...

and Jerry Pournelle, who, in their books, credit Dan Alderson with ideas that inspired some of their science fiction, notably the

Alderson drive CoDominium is a series of future history novels written by American writer Jerry Pournelle, along with several co-authors, primarily Larry Niven. Series Setting Formation of the CoDominium The point of departure of Pournelle's history is the ...

and the

Alderson disk An Alderson disk (named after Dan Alderson, its originator) is a hypothetical artificial astronomical megastructure, like Larry Niven's Ringworld and the Dyson sphere. The disk is a giant platter with a thickness of several thousand miles. Th ...

. As "Dan Forrester" he is a prominent character in ''

Lucifer's Hammer ''Lucifer's Hammer'' is a science fiction post-apocalypse-survival novel by American writers Larry Niven and Jerry Pournelle that was first published in 1977. It was nominated for the Hugo Award for Best Novel in 1978. Two issues of a planned s ...

''. Alderson did not write science fiction himself, but for his own amusement created the imaginary planet of Toadland, a planet where everyone gets his heart's desire. As the ruler of the world, he assumed the title "Wibblefubwilda", over the Wibblefubs, Wibbles, amd Wibs that populated Toadland. He died at an early age from complications of diabetes. He is remembered as a "patron saint" of the Los Angeles Science Fantasy Society, which honored his memory with a parking space reserved in his name in front of their clubhouse until they moved to a new location without dedicated parking. Alderson devised a Fortran program (called TRAM for Trajectory Monitor) for navigation in the Solar System, still used by low-thrust craft in 2008. When Alderson lost his vision to diabetic complications, he was able to continue working at JPL by dictating to an unpaid "seeing eye person." Before he was forced to retire due to medical reasons, he created a complex subroutine package (Portable NameList) in Fortran, strictly by dictation. He organized things so well that he was able to create a number of secondary subroutines and functions, keeping all arguments in a strict order to avoid confusion. Alderson was a confirmed night owl. It was well known at JPL that, if someone saw him at his desk at 8 AM, he'd been there all night. As his health failed, he paid less and less attention to the time, sometimes leaving for a 3 PM appointment at 3:30 PM.

References

{{DEFAULTSORT:Alderson, Dan 1941 births 1989 deaths California Institute of Technology alumni Deaths from diabetes Science fiction fans