I. J. Good - Biography
Irving John ("I.J."; "Jack") Good (9 December 1916 – 5 April 2009) was a British mathematician who worked as a cryptologist at Bletchley Park with Alan Turing. After World War II, Good continued to work with Turing on the design of computers and Bayesian statistics at the University of Manchester. Good moved to the United States where he was professor at Virginia Tech.
He was born Isadore Jacob Gudak to a Polish-Jewish family in London. He later anglicized his name to Irving John Good and signed his publications "I. J. Good."
An originator of the concept now known as "technological singularity," Good served as consultant on supercomputers to Stanley Kubrick, director of the 1968 film 2001: A Space Odyssey.
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Life
Good was born Isadore Jacob Gudak to Polish-Jewish parents in London. His father was a watchmaker, who later managed and owned a successful fashionable jewelry shop, and was also a notable Yiddish writer writing under the pen-name of Moshe Oved. Good was educated at the Haberdashers' Aske's boys' school in Hampstead, north London, where, Dan van der Vat writes, Good effortlessly outpaced the mathematics curriculum.
Good studied mathematics at Jesus College, Cambridge, graduating in 1938 and winning the Smith's Prize in 1940. He did research under G.H. Hardy and Besicovitch before moving to Bletchley Park in 1941 on completing his doctorate.
Bletchley Park
On 27 May 1941, having just obtained his doctorate at Cambridge, Good walked into Hut 8, Bletchley's facility for breaking German naval ciphers, for his first shift. This was the day that Britain's Royal Navy destroyed the German battleship Bismarck after it had sunk the Royal Navy's HMS Hood. Bletchley had contributed to Bismarck's destruction by discovering, through wireless-traffic analysis, that the German flagship was sailing for Brest, France, rather than Wilhelmshaven, from which she had set out. Hut 8 had not, however, been able to decrypt on a current basis the 22 German Naval Enigma messages that had been sent to Bismarck. The German Navy's Enigma ciphers were considerably more secure than those of the German Army or Air Force, which had been well penetrated by 1940. Naval messages were taking three to seven days to decrypt, which usually made them operationally useless for the British. This was about to change, however, with Good's help.
Good served with Turing for nearly two years.
Subsequently he worked with Donald Michie in Max Newman's group on the Fish ciphers, leading to the development of the Colossus computer.
Postwar work
In 1947 Newman invited Good to join him and Turing at Manchester University. There for three years Good lectured in mathematics and researched computers, including the Manchester Mark 1.
In 1948 Good was recruited by the Government Communications Headquarters (GCHQ), successor to Bletchley Park. He remained there until 1959, while also taking up a brief associate professorship at Princeton University and a short consultancy with IBM.
From 1959 until he moved to the U.S. in 1967, Good held government-funded positions and from 1964 a senior research fellowship at Trinity College, Oxford, and the Atlas Computer Laboratory, where he continued his interests in computing, statistics and chess. He later left Oxford, declaring it "a little stiff".
United States
In 1967 Good moved to the United States, where he was appointed a research professor of statistics at Virginia Polytechnic Institute and State University. In 1969 he was appointed a University Distinguished Professor at Virginia Tech, and in 1994 Emeritus University Distinguished Professor.
Here's something he had later said about his arrival in Virginia (from England) in 1967 to start teaching at VPI, where he taught from 1967 to 1994:
"I arrived in Blacksburg in the seventh hour of the seventh day of the seventh month of the year seven in the seventh decade, and I was put in Apartment 7 of Block 7...all by chance."
Research and publications
Good's published work ran to over three million words. He was known for his work on Bayesian statistics. He published a number of books on probability theory. In 1958 he published an early version of what later became known as the Fast Fourier Transform but in a journal so obscure that it never became widely known. He played chess to county standard and helped popularize Go, an Asian boardgame, through a 1965 article in New Scientist (he had learned the rules from Alan Turing). In 1965 he originated the concept now known as "technological singularity," which anticipates the eventual advent of superhuman intelligence:
Good's authorship of treatises such as "Speculations Concerning the First Ultraintelligent Machine" and "Logic of Man and Machine" (both 1965) made him the obvious person for Stanley Kubrick to consult when filming 2001: A Space Odyssey (1968), one of whose principal characters was the paranoid HAL 9000 supercomputer. In 1995 Good was elected a member of the Academy of Motion Picture Arts and Sciences.
Personality
The slender, bushy-moustached Good was blessed with a sense of humor. He published a paper under the names IJ Good and "K Caj Doog"—the latter, his own nickname spelled backwards. In a 1988 paper, he introduced its subject by saying, "Many people have contributed to this topic but I shall mainly review the writings of I. J. Good because I have read them all carefully." In Virginia he chose, as his vanity license plate, "007IJG," in subtle reference to his World War II intelligence work.
Death
Good died on 5 April 2009 of natural causes in Radford, Virginia, aged 92.
Books
- Probability and the Weighing of Evidence (1950), Griffin, London.
- Information, Weight of Evidence: The Singularity Between Probability Measures and Signal Detection (1974) with D.B. Osteyee, Springer, ISBN 978-3540067269.
- Good Thinking: The Foundations of Probability and Its Applications (1983) University of Minnesota Press. Republished by Dover in 2009.
See also
- Good-Turing frequency estimation
- Cryptanalysis of the Enigma
- MacMahon Master theorem
Notes
- Dan van der Vat, "Jack Good" (obituary), The Guardian, 29 April 2009, p. 32.
- Hugh Sebag-Montefiore, Enigma: The Battle for the Code, London, Weidenfeld & Nicolson, 2000, ISBN 978-0297842514.
External links
- Good's web page at Virginia Tech
- Bibliography ("Shorter Publications List", running to 2300 items) (PDF)
- Biography focusing on Good's role in the history of computing
- Project Euclid An interview with Good can be downloaded from here
- VT Image Base Photographs
- Obituary, Virginia Tech, 6 April 2009
- Obituary, Daily Telegraph, 10 April 2009
- Obituary, The Times, 16 April 2009
- Obituary, The Independent, 14 May 2009
- Eulogy Mathematical eulogy (with Maple code) by Doron Zeilberger, 2 December 2009
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