Answer by Davd Williams:
Economics is the ultimate study of human behavior. It looks at why people do what they do. While you may not think that from the study of macro economics, which is initially about perfect systems and theory. All the really matters in economics is what people do with their time and money.
Economics is woven through every aspect of human activity from science, marketing, politics, sports, health care and food.To get an idea of where the study of economics can leads, check out the Freakonomics books.
Akira Morikawa 