IBM 1130 User Manual page 97

Design an Accident-Insensitive System
The safety of disk data should be a constant consid-
eration when designing a system. "An ounce of
prevention is worth a pound of cure" - or, in data
processing terms, a few minutes spent in planning can
save many frantic hours or days in keypunching and
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computer reruns. An accident may never occur,
but it would be foolhardy to ignore its possibility.
By following a few basic guidelines, the system
may be designed so as to be relatively insensitive
to accidents; no matter what may happen, recovery
is quick and straightforward.