Tackling Enigma (Turing's Enigma Problem Part 2) - Computerphile

Sending out the RAF to bomb specific targets in the hope of generating a message which contained specific coordinates they could then decrypt, was called "gardening".

He has the priceless gift of distilling information down without dumbing it down.

I could listen to this man speak on any subject for hours

Professor Brailsford Is a fantastic narrator. I love his enthusiasm! 

The "German spy" was actually an agent -- Hans Thilo-Schmidt, who handed over the operating manual for the Heer version of Enigma, the Enigma 1, to French intelligence in 1931. He didn't defect, but continued to work as an agent until his arrest and execution by the Gestapo in 1943. He never handed over the actual device, which would have been quickly missed. The operating manual is a description of the procedures for using the device. It didn't describe the internals, particularly the rotor wirings (ie, the permutations) necessary as the first stage in breaking its code. French intelligence shared the information with the Poles and the English. Only the poles, in their three-man cipher bureau, were able to reconstruct the wirings using permutation algebra, with the reconstruction method also suggesting the Polish technique of breaking it.

I'm really glad that Professor Brailsford mentioned about Poles

 love listening to this guy speak

More long two part episodes, please. I love these 15+ minute videos.

This video is about 1 hour too short, i love this professor

Professor Brailsford is the David Attenborough of computing what an amazing gentleman!

Wonderful description, fascinating style of delivery, fantastic video. More pls!

Thank you for this series on "Enigma" professor Brailsford! :)

Fantastic telling of a great story. Can't wait for part 3.

A few relatives and I at a family reunion were talking about our experiences, and one fellow in his early nineties told us something unexpected - during WWII he was stationed in Washington DC in a group working on decrypting the Enigma machine. For secrecy reasons he couldn't and didn't divulge anything, but it was interesting to learn he had worked on such an important project. He's gone now, nevertheless I will never forget that little bit of exposure.

Absolutely fabulous videos. While understanding the math, you pull it all together in a fabulous presentation that is completely captivating. Well done!

Thank you very much for the correct explanation of the history of Enigma.

To find a man that can explain this in such detail and order .... This guy is a genius and such a great guy ! TY

This 2 part set is the very best scientific rundown of the enigma saga I've ever seen anywhere. Much more informative than the history channel program on the subject! Also, very good digital diagrams and charts showing the physical reality...

Superb presentation of the facts. Such an impressive effort and rich history. Thank you.

*****, whatever you've done in your shooting with Prof.B. looks really good; props!