Simon Singh

speaker

239 appearances 3 recordings 1 series first heard Dec 2013 last heard Jan 2015

Simon Singh’s voice in public audio — every appearance, attributed to the second.

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More or Less · Numbers of the Year 2014. · 2 Jan 2015 podcast

I've had that all along.

I send the box back to you.

There's only one padlock left.

That's your padlock.

You can undo that padlock.

You can open the box and get the precious object.

And at no time has the box been insecure.

At no time have I had to give you a key.

And you were able to open the box at the end of the day.

So that's the analogy.

Can you give us a hint about the mathematics involved?

Yeah.

So let's take that analogy and just put a twist on it.

So this time, imagine I've got a million padlocks.

OK.

And what I do is I send padlocks around the world.

So every post office has got one of my padlocks and the padlocks are open.

So now let's imagine you want to send me a precious object.

What you do is you go to your local post office.

You say, can I have one of Simon's padlocks?

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