"signals and systems" - covering signals processing, systems and control theory is very generic subject. You need it in economics, biology, chemistry, physics,

"signals and systems" - covering signals processing, systems and control theory is very generic subject. You need it in economics, biology, chemistry, physics, computer science, statistics, electrical engineering, robotics , automation, logistics, ... It should be taught like calculus or linear algebra, so that everyone gets gist of the basics before learning to apply it into their specific field.