ABSTRACT
It is very difcult to change people to t machines, and it is of course not desirable to do so. After all, machines are made to serve humanity and not vice versa. It is therefore better to design the machine from the very beginning to t the human user. That this does not happen more often depends largely on the fact that many engineers lack factual knowledge of human characteristics. There is a need for a new type of engineer with a basic knowledge of the human being-in other words, one with knowledge of the relevant aspects of psychology, physiology, anatomy, and a certain amount of medicine. An engineer with this background is known as an ergonomist.
