I.J. Good — Wikipedia

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 British statistician and cryptographer (1916–2009) 
 

 I. J. Good Born Isadore Jacob Gudak 
 ( 1916-12-09 ) 9 December 1916
 London , England , United Kingdom Died 5 April 2009 (2009-04-05) (aged 92)
 Radford, Virginia , United States Alma mater Jesus College, Cambridge Known for Good–Thomas algorithm 
 Good–Toulmin estimator 
 Good–Turing frequency estimation 
 Black hole cosmology 
 Intelligence explosion Awards Smith's Prize (1940) Scientific career Fields Statistician, cryptologist Institutions Trinity College, Oxford ; Virginia Tech Doctoral advisor G. H. Hardy 
 
 Irving John Good (9 December 1916 – 5 April 2009) [ 1 ] [ 2 ] 
was a British mathematician who worked as a cryptologist at Bletchley Park with Alan Turing . After the Second World War , 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 a professor at Virginia Tech .

 He was born Isadore Jacob Gudak to a Polish Jewish family in London. He later anglicised his name to Irving John Good and signed his publications " I. J. Good ."

 An originator of the concept known as the intelligence explosion , Good served as consultant on supercomputers to Stanley Kubrick , director of the 1968 film 2001: A Space Odyssey . [ 3 ] 

 
 Life

 [ edit ] 
 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 jewellery 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 , at the time in Hampstead in northwest London, where, according to Dan van der Vat , Good effortlessly outpaced the mathematics curriculum . [ 3 ] 

 Good studied mathematics at Jesus College, Cambridge , graduating in 1938 and winning the Smith's Prize in 1940. [ 4 ] He did research under G. H. Hardy and Abram Besicovitch before moving to Bletchley Park in 1941 on completing his doctorate.

 Bletchley Park

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 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. [ 3 ] 
Hut 8 had not, however, been able to decrypt on a current basis the 22 German Naval Enigma m

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