“Sometimes
it is the people no one imagines anything of who do the things that no one
can imagine.” The take-away line
from The Imitation Game states the
theme. The plot is the quest to
build a computer that can decipher enemy communications and win a war.
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| Even with the Bombe, much work was done manually and brainually. This grid shown in the movie is not the Banburismus of Turing. |
Scholars complain about the
historical inaccuracies. It is easy to do. This is not a documentary. The film is a drama about one
man’s achievement of what experts considered impossible. That much is absolutely true. Commander
Alistair Denniston held neither expectation nor hope for success. The film dramatizes his disdain for the
codebreakers. And it is drama, rather than the unemotional grinding out of intellectually difficult, yet ultimately routine, work.
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| 10,000 people worked there, 80% of them women. |
Contrary to the movie, Joan
Clarke’s team working on the Naval Enigma had early successes. In the movie, by mid-1941 Denniston was
not the only one enraged by Turing’s lack of progress. In real life, by then, decipherment of
Naval Enigma traffic allowed fleets to be redirected around U-boat packs. Lost
tonnage shrank. But it is true that not all intercepts could be acted on. The Ultra Secret by F. W. Winterbotham (Harper
& Row, 1974) broke that story long ago.
Writing in Turing: Pioneer of the Information Age (Oxford, 2012), B. Jack Copeland acknowledges that Cmdr. Denniston built Bletchley in the early years 1937-1939,
Writing in Turing: Pioneer of the Information Age (Oxford, 2012), B. Jack Copeland acknowledges that Cmdr. Denniston built Bletchley in the early years 1937-1939,
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| You can buy a real one. Some fetch a 6-figure price. (They also sell replicas - and are not alone in that.) http://enigmamuseum.com/ |
In real life, although the Turing-Welchman “Bombe” could and did reveal the settings of the Enigma machines, much of its output had to be checked by hand. In fact, Clarke and Turing spent long hours working together in Hut 8. They continued to do so after they broke off their engagement. And they met each other's parents after they announced their engagement. Turing apparently did not meet them before, as in the movie.
Moreover, different than the portrayal, it was common for all of the cryptanalysts to continue work on the previous day’s cipher traffic until the next round of communiqués arrived. They knew of stock phrases - such as ending each message with "Heil Hitler" - because that was long since a basic tool of diplomatic and military cryptanalysis: date at the top; "Your Excellency"; etc.
Turing called his manual labor “Banburismus” after the long sheets of paper made in Banbury. But Turing called Clarke’s method “Dillyismus” after Dillwin Knox, the World War One cryptologist who revealed the Zimmerman Telegram.
Moreover, different than the portrayal, it was common for all of the cryptanalysts to continue work on the previous day’s cipher traffic until the next round of communiqués arrived. They knew of stock phrases - such as ending each message with "Heil Hitler" - because that was long since a basic tool of diplomatic and military cryptanalysis: date at the top; "Your Excellency"; etc.
Turing called his manual labor “Banburismus” after the long sheets of paper made in Banbury. But Turing called Clarke’s method “Dillyismus” after Dillwin Knox, the World War One cryptologist who revealed the Zimmerman Telegram.
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Soon to be an eBook from http://www.bletchleyparkresearch.co.uk |
Before going to the
theater, I intended to watch the film as a story in the abstract, not as a
documentary. That was very hard to
do. I read Andrew Hodges’s booklet biography
of Turing when it came out in 1999. (The film is based on his recent and greatly expanded biography, Turing: The Enigma; Princeton, 2014). Ahead of seeing the film, I researched Joan Clarke and wrote about her
for the E-Sylum maillist of the Numismatic Bibilomania Society. My research into her work continues.
Having her numismatic bibliography, from an obituary in the BNJ, I submitted a
proposal to the ANA.
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| http://www.bletchleypark.org.uk |
From Wired, “How Designers Recreated Alan Turing’s Code-Breaking
Computer for Imitation Game,” by Angela Watercutter, November 21, 2014 here.
"Turing produced the design
for the Bombe, building on the design of the original Polish Bomba which had
been produced by Marian Rejewski in 1938. The Bletchley Park Bombe designed by
Turing, was refined by another Bletchley Park codebreaker Gordon Welchman and
actually built by engineer Harold Keen who was based at the British Tabulating
Company, not at Bletchley Park."
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| A snippet of what displays on the devices given to visitors to perhaps the most computerized park in the UK. |
Among those who complain
about the film is Dr. Sue Black whose blog is "Cheeky Geek" here.
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| In a scene stolen from the future, a tank crushes an (empty) Tommy helmet. |
A biography of Joan Clarke's work is this article by Lynsey Ann Lord which is extracted from a University of St Andrews honours project. (Clarke finished all three
triposes examinations and qualified for an M. Sc. in addition to her B.A. in
mathematics. She received neither
because Cambridge did not grant degrees to women back then.)
Joan Elisabeth Lowther Murray [nee Clarke] (1917—1996) cryptanalyst and numismatist is listed in the Oxford Dictionary of National Biography here.
Lord Stewartby (Bernard Harold Ian Halley
Stewart), one of her collaborators in the coinage of Scotland, wrote the
obituary for the British Numismatic
Journal Vol. 67 No. 13, pg 162-167. (Online here.) In 1986, Joan E. L. Murray was granted a BNS Sanford Saltus Medal for her research.
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| He is not really Turing and it is not really his Bombe but it was still a good movie. |
The Secret Lives of Codebreakers: The Men and Women Who Cracked the Enigma Code at Bletchley Park by Sinclair McKay. New York: Plume (Penguin Group), 2012. (Originally published in the UK as The Secret Life of Bletchley Park (Aurum Press).) This retelling of the capture of Enigma wheels from the U-110 has some inaccuracies. The book says very little about Joan Clarke, though quite a bit about Mavis Lever (later Batey), who also worked on the Naval Enigma.
The Ultra Secret: the first account of the most astounding cryptanalysis coup of World War II – how the British broke the German code and read most of the signals between Hitler and his generals throughout the war by F. W. Winterbotham, New York: Harper and Rowe, 1974. This book broke the story. It is not from the viewpoint of Bletchley Park, and has no mention of Turing.
Engima: How the German Machine Cipher was Broken, and How it was Read by the Allies in World War II by Wladyslaw Kozaczuk, edited and translated by Christopher Kasparek, University Publications of America, 1984 (Warsaw: Ksiazka I Wiedza, 1979). Polish mathematicians had begun a theoretical analysis as early as 1932. The Turing-Welchman Bombe was an extension of the Polish Bomba; it was not Turing's universal machine.
ALSO ON NECESSARY FACTS
