For we are insane people, trying to do an impossible task.

Formulation of such targets was a difficult but not an impossible task.

And an insane person does not know what an impossible task is. Thank you.

A blind person driving a vehicle safely and independently was thought to be an impossible task, until now.

Again, if you have lots and lots of robots, it's impossible to coordinate all this information centrally fast enough in order for the robots to accomplish the task.

No one is likely to be reading my emails or listening in on my Skype calls. The volume of digital information that the NSA gathers would make that an impossible task.

Physically impossible.

That's impossible.

It's impossible.

Absolutely impossible.

Silly. Foolish. Impossible.

It's just impossible.

Impossible, you say?

The impossible crate illusion.

It was deemed impossible.

Eighteen minutes, clearly impossible.

No, right? It's impossible.

And since what's impossible is always unknown, it allows me to believe I can cheat the impossible.

The point that I would like to ask you to try to do, is just in 30 seconds and I know this is in a sense an impossible task write down what you think is probably some of the top priorities.

Five months before the fall of the Berlin Wall and Czechoslovakia s Velvet Revolution, Poland had negotiated its way out of totalitarianism. But the Mazowiecki government faced a nearly impossible task building democratic political institutions while resuscitating the country s torpid economy.

(a) Is not materially impossible

They are impossible to juggle.

She's asking for the impossible.

Impossible? I don't think so.

You may think that's impossible.

The World Economy s Impossible Demand

It is next to impossible.

I'm sorry, but it's impossible.

You should know that's impossible.

It's almost impossible to model this structure any other way, and it's almost impossible to do it on computers.

And yet, the impossible is happening.

They were almost impossible to swallow.

And it's almost impossible to perform.

And everyone said it was impossible.

So the seemingly impossible is possible.

And he said that was impossible.

To live without air is impossible.

Almost many of them are impossible.

It is impossible to do it.

That aim is impossible to attain.

It's impossible to go out now.

Without the sun, life is impossible.

We know that this is impossible.

Well here's the late, great Jerry Andrus' impossible crate illusion in 3D, in which Jerry is standing inside the impossible crate.

So what is this impossible hyperbolic structure?