After a fault was detected, the operators know that the system is in an exceptional situation, but they do not know why.
Troubleshooting is the
operation employed to identify the source, namely, the particular component that failed.
The activities involved in handling these
interactions consume
attention and require intervention by the human
operator.
Because the
operators'
attention is required also to other problem solving
activities, these mental activities are
error-prone. Also, if any of the mental
activities described above fail, a new
event might enter the system, and the
system might enter an ambiguous or inconsistent state.
Updated on 11 Feb 2017.