On mathematical modelling in ergonomics.

This paper is the combination of three separate discussion documents, presented amongst others at a parallel session at the Ergonomics Society Annual Conference, 1979, at Oxford. The discussion documents were general in tone and followed logically after one another, and the authors were asked to provide a joint paper for wider dissemination. This is the product, and represents a more-or-less common viewpoint between the authors (and others - it will no doubt be obvious that much of what is said has already been said by Chapanis (1961, 1967) in particular, in his usual elegant prose).