We had a gap at the end of Lecture 12 so Richard gives a short impromptu extension lecture (ie non-examinable) about the amazing thinker Alan Turing. So much to say, so little time, such fast tal...
We had a gap at the end of Lecture 12 so Richard gives a short impromptu extension lecture (ie non-examinable) about the amazing thinker Alan Turing. So much to say, so little time, such fast talking.
We chat about 3 different major contributions he made to the world - his decryption work during WWII and the Engima Machine; his abstract model of a computer (the Turing Machine) and what things can be effectively "computed"; and finally, briefly only, his thoughts about what it is to be human and the difference between humans and computers - the Turing Test.
Alan Turing is a key figure in the development of computing, indeed if I had to pick just one thinker who was the most amazing he'd get my vote.
Richard promises to talk about the Turing Test in more depth in the next extension lecture.
Also comes up: Epimenides paradox, non computable functions, the halting problem, the Persian mathematician al-Khwarizmi, U-559, Colin Grazier G.C., Anthony Fasson, G.C.,Tommy Brown, Blade Runner, CAPTCHAs.
Errata: My memory was about as reliable as usual - I said Tommy stayed outside in a boat but i've since read that all three swam across and went into the U-559. Humbling bravery. I've also since realised that Colin Grazier was from Tamworth in the UK, not the Tamworth in Australia as I had always thought (why are so many English places named after Australian towns?) Finally, something which actually I did know but still managed to get wrong - the important material salvaged was not a cypher machine but quantities of data (ciphertext and the corresponding plaintext I think) which the codebreakers at Bletchley Park were able to use as "cribs" and were of vast help in cracking the submarine code used at that time.
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Before you victimise england over homosexual criminality, please note that Australia would still have locked up Turing 7 years after it was legalised in England. And that is best case - Tasmania were 30 years behind England on decriminalisation.
Great lecture.But... It's sad that he didn't even mention that decryption of ENIGMA was mostly work of Polish mathematicians: Rejewski, Różycki and Zygalski. Commercial version of ENIGMA was deciphered in 1932. In January 1938, Polish Cipher Bureau's German was able to read nearly 75% of all mesages. In 1939 Poles gave their know-how to the Brits and French and started working with allies in decyphering new ENIGMA(meanwhile Nazi impreved machine).
am glad u said that, during my undergrad I had a lot of faker-teachers... very badly prepared... but i was too young to say STFU and give me a refund...
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the German code is unforgivable...goof