When it sits in port, you cannot fail to notice it.

BBC: Costa Concordia disaster: Evacuating a cruise ship

Prof Zehra Sayers of Sabanci University in Istanbul says Sesame is so valuable that it cannot be allowed to fail.

BBC: Sesame synchrotron is a flash of unity in Middle East

If we do not want firms to grow too big to fail we cannot make it cost prohibitive for small firms to succeed.

FORBES: Too Big To Fail, Too Small To Succeed

Anyone who reads the story as they stand beside the graves cannot fail to be moved by it.

BBC: North East Wales

And, if I had just one thing to say, it is that we in the environmental movement cannot fail Van Jones.

NEWYORKER: Greening the Ghetto

You hear the same thing again and again: people insist that the Euro cannot fail, just after explaining why it's going to be so difficult for it to carry on.

BBC: Soros speaks on Euro

Typically their strategy is flawed, most of their managers fail to see that it is, and those who do spot the problem cannot overcome cultural resistance to change.

ECONOMIST: Ready, fire, aim

If the church cannot offer a message more spiky and distinctive than social democracy in a clerical collar, it will fail that test.

ECONOMIST: Bagehot

It will fail first in its own terms, because laisser-faire is a Utopian folly: it cannot be built, only (unsuccessfully) attempted.

ECONOMIST: PPE of global capitalism

As he explained it, innovative projects often succeed at the micro level or within pilot environments but ultimately fail because they cannot be taken to scale.

FORBES: Social Innovation: Is It Really Here to Stay?