Breaking the Code Page #5

- It was exciting. - Thank you.

- Have you found any accommodation? - Yes, The Crown, in Sandyburg Kent. - It was exciting. - Thank you.

- Have you found any accommodation? - Yes, The Crown, in Sandyburg Kent.

Oh, well, that is only three miles.

Ah ... Having bike? You will need a bicycle.

I trust you to tell Mr. Turing's all about ...

- ... The Enigma code. - Yes of course.

- What kind of code is that? - Mechanic.

The message to be transmitted is encoded using this machine.

The sender and receiver have the same equipment, of course.

Here below the keyboard are three rotors.

Alphabet letters surround each rotor. Here below the keyboard are three rotors.

Alphabet letters surround each rotor.

If one of the 'k' key is pressed for example,

It is that the 'k' is coded as 'h'.

Then the first rotor rotates.

Pressing the 'k' again,

the letter 'f' appears, and so on. Pressing the 'k' again,

the letter 'f' appears, and so on.

When the rotor has come full circle,

the second rotor does the same and then the third.

It is a poly alphabetical machine with 26 x 26 x 26 possible configurations.

- 17,576. - Exact.

- There is such a huge number. - It is not true.

A manual analysis could eventually lead to the correct setting

having enough patience, but it would take several days

and change the configuration daily.

How do you know what settings to use? and change the configuration daily.

How do you know what settings to use?

They use a code book that unfortunately do not have,

but at least we know how the machine works

and we have been able to modify one of our own machines to simulate

- ... The operation of Enigma. - Ah!

The problem is that the Germans have changed the complicating Enigma,

with what our model has become virtually obsolete.

Their operators are now equipped with a set of five rotors

three of which any can be used in any order

when they initialize the Enigma.

There are 60 possible combinations. 60. 17,576 times when they initialize the Enigma.

There are 60 possible combinations. 17,576 60 times.

They have also added a system of pins to the device,

as if it were a telephone switchboard.

Connect pairs of letters on pins

and that the exchanges before they go to the rotors, and beyond.

So there are literally billions of possible permutations. and that the exchanges before they go to the rotors, and beyond.

So there are literally billions of possible permutations.

That's what I call a problem.

The fact is that endiablado code

It is a vital part of the Nazi plan ... vital war.

He uses the infantry, and also the Luftwaffe,

perhaps most importantly, also the U-boat.

And if the U-boat get control of the North Atlantic

our merchant ships have no chance.

They will kill hunger.

So ... Enigma has to be violated.

Somehow.

absolute priority.

Oranges or lemons not have ...

... So we made fruit cocktail with apples and pears.

It has a depressing color.

Stop looking for faults, things are difficult enough these days.

- Pat comes to church with me. - Oh good.

- Do you come you, Alan, darling? - No, not today.

- Oh! - What's up?

- It is terribly sour. - Is it?

- Try a little. - I've already done it.

I'm so glad that you were able to come today!

This is so rare that Alan us to their friends. Very rare, indeed.

Of course, it was no different when I was in school.

Just came his friend Chris, that was it. lovely boy and very good family.

Mom, I do not think Pat wants to hear about my childhood friends.

Why not? It is always interesting to know something about the people you want.

- Want some more? - Oh, yes, please.

Come to church, Alan. It would be so nice that we were all together.

- Which is the reason? - There must be a reason?

It will seem idiotic, but I do not think happens Sunday afternoon in the church.

Before it was extremely devout.

I was not such a thing. You never understood what I thought.

This needs sugar. Do you have sugar?

We have only eight ounces a week,

Or people rationing does not apply like you?

People like me?

We are always hearing that people with secure jobs

He lives in the land of plenty.

Would you say you live in the land of plenty?

- Nothing of that. - Of course not.

- And stop to find out. - Find out?

If! All those hints about confidential jobs.

You know perfectly well ... we can not tell you what we do!

Okay, do not be angry. I'll see if we have sugar.

She's right about that.

About what?

Well, I'd like to know ...

I would like to know your family and friends.

- I want you to talk to them. - I do ... sometimes.

Who is Chris?

Christopher Morcom.

We went to school together.

- Clearly your mother liked. - If.

It was an extraordinary boy.

Very smart. Very insightful.

Very mature for his age.

It made all other pareciesen so common.

It was one of those intense friendships that only happen when you're young.

I worshiped the ground he walked on.

Do you you keep in touch?

Died.

One night he got sick at school.

He had tuberculosis when he was a child. I did not know. He never told me.

The next morning I heard that he had been hurriedly taken to hospital.

... He died six days later.

On Thursday February 13, 1930.

I was shattered.

Poor Alan.

I felt ... it was I who should have died, not him;

and that the only reason to live was that I should get something

Christopher had. Often I thought ...

After his death, almost she believed he was still with me ...

... In spirit, and who could help. So, I think,

My mother had the impression that I was devoutly religious.

Nothing of that. I was just ...

... Obsessed with the idea, with the question,

whether the mind of Christopher might or might not exist without his body.

It was an obsession that stayed with me for many years.

What are the mental processes?

They can result in anything other than a living brain?

You see, in a way ... actually,

many of the problems I have tried to solve in my work

They lead directly back to Christopher.

Do not you think you amuse?

I think he would like.

I hope so.

Have a look at.

It's a pineapple.

I see it's a pineapple.

Take it.

Look at her. I'll tell you something extraordinary about it.

It seems to me quite ordinary.

Defines what we mean by a succession of Fibonacci.

A Fibonacci sequence is a sequence of numbers in which each

is the sum of the previous two; start with one, and one plus one equals two,

one and two, three, three-two, five; three five eight ...

... Five eight, thirteen ... Okay, ten.

Now look at the pineapple.

Look at the pattern of the bracts ... leaves. Follow them ...

Coiled around the pineapple: eight lines by turning to the left,

thirteen turning clockwise. Coiled around the pineapple: eight lines by turning to the left,

thirteen turning clockwise.

The numbers always come from the Fibonacci sequence.

- Always? - Always. And not only pineapples.

Petals most flowers grow in the same way.

Is not it amazing?

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