Fail Deadly is a concept in military strategy which encourages deterrence by guaranteeing an immediate, automatic and overwhelming response to an attack. Under Fail Deadly nuclear deterrence, policies and procedures controlling the retaliatory strike will authorize launch even if the existing command and control structure has already been neutralized.
Fail Deadly is also associated with Massive Retaliation, a deterrence strategy which ensures that the counter strike will be conducted by a higher factor. Basically, if an aggressor launched one missile at another party, they would get 10 in return. If they launched 10, they would get 100 in return, and so on.
A more prosaic example of a Fail Deadly instrument is a dead man's switch which must be constantly held to prevent the triggering of an explosive, which has the purpose to make sure that a suicide bombing is not prevented by killing the person with the bomb.
The term Fail Deadly was coined as a contrast to fail safe.
FailDeadly is a concept in military strategy which encourages deterrence by guaranteeing an immediate, automatic and overwhelming response to an attack.
FailDeadly is also associated with Massive Retaliation, a deterrence strategy which ensures that the counter strike will be conducted by a higher factor.
A more prosaic example of a FailDeadly instrument is a dead man's switch which must be constantly held to prevent the triggering of an explosive, which has the purpose to make sure that a suicide bombing is not prevented by killing the person with the bomb.
A device which, if (or when) it fails, fails in a way that will cause no harm or at least a minimum of harm to other devices or danger to personnel.
The safety glass used in modern automobile windows which is designed to shatter into very small pieces rather than in the long jagged fragments created when common window glass breaks.
A system which has been structured such that it cannot fail (or that the probability of such failure is extremely low) to accomplish its assigned mission regardless of environmental factors.