Utility is a subjective notion in economics, referring to the amount of satisfaction a person gets from consumption of a certain item.

Marginal utility refers to the extra utility a consumer gets from one additional unit of a specific product. In a short period of time, the marginal utility derived from successive units of a given product will decline. This is known as diminishing marginal utility. 

Price is what you pay; Value is what you get - Warren Buffett

The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done - Jean Piaget

Education is not preparation for life; education is life itself - John Dewey

“For something that is so integral to shaping our daily lives, most people do not take the time to understand the subject deeply.” I believe that there’s something natural and important about having a childlike curiosity about the world. That sense of wonder that is so quickly lost as we age is the very thing that drives the world forward. It’s the force behind the formation of ideas and knowledge. It drives us to ask about why things are the way they are? About how can we make them better? Life as we know it, whether you’re aware of it or not, is governed largely, perhaps completely, by economics. In the same way that physics is the central discipline within the physical sciences, Economics is the central discipline within the social sciences.

Transportation is the circulatory system of the world. From ants bringing food back to their nests to a 200,000 ton container ship bringing goods made in *insert country* to destinations across the world. Regardless of whether you care, understanding how the transportation systems that make up the fabric of our world are designed and function is important.