In my personal life, if I talk about the economy with someone, or listen to an expert talk about it, I use the conceptual framework of calculus to evaluate the

In my personal life, if I talk about the economy with someone, or listen to an expert talk about it, I use the conceptual framework of calculus to evaluate the relations between quantities. For instance, understanding changes in demand of various products in the face of inflation based on the price sensitivity of those products.