Alan Turing: The EnigmaA gripping story of mathematics, science, computing, war history, cryptography, and homosexual persecution and liberation. Hodges tells how Turing's revolutionary idea of 1936-- the concept of a universal machine-- laid the foundation for the modern computer. Turing brought the idea to practical realization in 1945 with his electronic design. This work was directly related to Turing's leading role in breaking the German Enigma ciphers during World War II, a scientific triumph that was critical to Allied victory in the Atlantic. Despite his wartime service, Turing was eventually arrested, stripped of his security clearance, and forced to undergo a humiliating treatment program-- all for trying to live honestly in a society that defined homosexuality as a crime. This New York Times bestselling biography of the founder of computer science and artificial intelligence is the definitive account of an extraordinary mind and life. --Excerpted from 2014 version, published by Princeton University Press. |
From inside the book
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Page 92
... reason , according to my thinking , why Comte could not find an unsolvable problem lies in the fact that there is no such thing as an unsolvable problem . It was a view more positive than the Positivists . But at the very same meeting ...
... reason , according to my thinking , why Comte could not find an unsolvable problem lies in the fact that there is no such thing as an unsolvable problem . It was a view more positive than the Positivists . But at the very same meeting ...
Page 163
... reason to prefer one guess to another . The argument depended upon the key being absolutely patternless , and spread evenly over the possible digits , for otherwise the analyst would have reason to prefer one guess to another . Indeed ...
... reason to prefer one guess to another . The argument depended upon the key being absolutely patternless , and spread evenly over the possible digits , for otherwise the analyst would have reason to prefer one guess to another . Indeed ...
Page 259
... reason to suppose that , with Atlantic U - boat Enigma restored , the sinkings could be kept down to the level of late 1941. In January they were . But in February they had doubled , nearly back to 1942 levels . And then in March they ...
... reason to suppose that , with Atlantic U - boat Enigma restored , the sinkings could be kept down to the level of late 1941. In January they were . But in February they had doubled , nearly back to 1942 levels . And then in March they ...
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Common terms and phrases
Alan Turing Alan Turing's Alan wrote Alan's American AMT's arithmetic Bletchley Bletchley Park Bombe boys brain Britain British calculation called Cambridge cathode ray tube chess Christopher cipher Computable Numbers cryptanalytic Darwin delay line Delilah differential analyser digits discussion Don Bayley Donald Michie EDVAC electronic enciphered engineering ENIAC Enigma machine explained fact G.H. Hardy German Hanslope Hilbert homosexual human idea instructions intelligence interest kind King's knew letter logical Manchester mathematician mathematics Max Newman mechanical messages method mind Morcom naval Enigma Neumann never Newman operations organisation paper perhaps Peter Hilton physical play plugboard position possible Princeton principle problem question Robin Gandy rotor scientific secret Shaun Wylie Sherborne signals symbols talk tape teleprinter theorem theory thing thought took Turing machine U-boat universal machine Womersley word writing