Human factors are one of the most neglected aspects of reliability, even though they appear to be a major source of unreliability. Regardless of the accuracy of photo-optical instruments, if they are operated by a man, the reliability of the instruments will drop approximately 80 per cent. In this supplementary paper, some of the psychological aspects of the sources of unreliability in man-machine systems are briefly discussed. This discussion consequently helps in the consideration of the selection and training of users of photo-optical instruments.
"Psychological Errors In Photo-Optical Systems Of Simulation", Proc. SPIE 0017, Photo-Optical Techniques in Simulators I, (28 October 1969); doi: 10.1117/12.946824; https://doi.org/10.1117/12.946824