Methods by which engineers stabilise their mechanisms suggest analogous possibilities for stabilising economic systems. Arnold Tustin (1957)
Already well known to engineers all over the world as a pioneer in the development of automatic control, it may well turn out that Gordon Brown will make a still deeper mark on the engineering development of this century. Arnold Tustin (1955)
Feedback: It is the fundamental principle that underlies all self-regulating systems, not only machines but also the processes of life and the tides of human affairs. Arnold Tustin (1952)