Abstract
The widely held notion ‘that most machine problems can be solved by active control’ and Machines and Mechanisms Theory can be dropped from mechanical engineering curricula is discussed and refuted, and the role of electronics and computers in machine engineering are put in their correct context. Computer-aided control of machines and mechanisms cannot replace the mechanical essence of the mechanical end-actuator, tool, etc. An in-depth knowledge of the theory of mechanisms is essential for the understanding and development of new approaches to machine design as well as for computer programming relevant to this field.