About the Author

The author retired after 40 years of practice in the field of instrumentation and control in the process industries (8 years with Eastman Kodak and 32 years with DuPont). He took, in 1947, what he understood to be the first college course offered in the theory of feedback control, a chance event at MIT that started his career in the field. He arguably has applied the scientific method to solving control problems in the process industries longer than anyone, or at least that was probably true when he retired in 1987. He had been explaining the concepts to the non-specialist for most of that time. He relishes this opportunity to spread the word to a larger audience.