Barry Cooper asks whether information can be increased through computation, pointing out that Turing computation does not create anything not already in the initial data (Nature 482, 465; 2012). If we ...

It is the height of the Second World War. A group of codebreakers stands in a dimly lit warehouse 50 miles northwest of London, a giant machine composed of spinning drums and wires looms in front of ...

The Nazis sent coded messages through the cipher machines to their ships and U-boats to plan devastating attacks on Allied shipping. The British codebreakers at Bletchley Park, led by Alan Turing, ...