"Control Theory is an electric-inspired mathematical hack to apply optimization."
I did the phrase above while studying control theory. It quite helped me appreciate the diagrams and understand more than just the trivial.
It is amazing what we created to solve problems when just simple electric circuits were available.
In fact, current research on control engineering make use of evolutionary algorithms (optimization) to control systems. To tell the truth, not only control, but design, improve, identify systems and so on.
