On the design of man-machine systems - Principles, practices and prospects

A large proportion of the problems associated with complex systems have been attributed, at least in part, to the human operators, maintenance personnel, or managers who work within these systems. It appears, therefore, that improving man-machine system design may contribute to decreasing substantially the frequency of problems in complex systems. In this paper, alternative views of how the design of man-machine systems might be improved are described and contrasted. A two-part approach for achieving the desired improvements is proposed.