If we disconnect the chamber, its own fail-safe system comes on.

No matter how fail-safe the system, however, people still make mistakes with numbers and data.

But on the other hand, there has to be some sort of fail-safe system to prevent things like this.

This made sense before the fitting of continuous fail-safe braking systems.

"There are too many fail-safe systems on this space station," Ekaterin said.

Then I'll ask whether it's the fail-safe system that some parents actually want.

"If the mechanical systems fail, the bus operator is the fail-safe system now."

The sort of modern, fail-safe system that could override both human and mechanical error is clearly beyond the city's means.

That posed the question of who or what was the fail-safe system.

"A lot more precaution should have been taken since, in essence, you're playing around with the fail-safe system."