Why, if pain can signal something wrong with our bodies, do we need a second, seemingly redundant system?

What was it about Klingons that made them think they were above the needs of their bodies, redundant systems or not?

"There are redundant systems like I've never seen before," he said.

The failure would have no impact to the mission, due to redundant systems.

Chesapeake had many redundant systems in order to maintain her position through most storms.

What else might go wrong if all the redundant systems are contaminated this way?

Mites didn't last very long because they were small but complicated, which left little space for redundant systems.

Conflict among Europeans can benefit only those who are powerful and already have redundant legal systems.

Second, from a risk management perspective, redundant systems need to be in place to minimize the chance of error or poor judgment.

When I turn this key and flick the little switch next to it, the third redundant system comes into play.