Fault-finding is a job that involves locating and identifying errors or defects in a system. The term 'CARP' is an acronym for Computer Aided Reliability Prediction, which is a method used to identify potential faults in a system. CARP is used to analyze the reliability of a system and identify any potential problems before they become serious. Fault-finders use CARP to help them locate and identify errors or defects in a system.