Enigma2001

Wigram:
Were you surprised when you heard that Admiral Donitz had changed the weather code?

Tom Jericho:
Well, the Germans were always nervous about Enigma. That was the reason Shark came on in the first place...

Wigram:
But the Germans believe Enigma's supposed to be infallible, because it would take people a thousand years to figure out the settings for one day, and they are changed every day. But we don't use people for that, do we, Mr. Jericho?

Tom Jericho:
No.

Wigram:
No. And that is the secret inside the secret: your thinking machines. Day and night, clackety-clack, programmed with a menu provided by your amazing brain, narrowing down the infinite possibilities to just a few million. And if anyone tells the Germans about that... there goes the war.