It is important for people to study economics. It is impossible for everyone to be an economist, but everyone could think like an economist. The reason why people should study economics is that they can have a deeper understanding of human situation and behaviors. For example, I decide to stay at home rather than exercise at the gym. According to economic principle, the opportunity cost of staying at home is the benefit I would have from exercising at the gym. As a student, I must choose how much time I can devote to my units. If I think a unit is more important and can bring me more benefits, I will decide to spend an extra hour studying it. In this case, I could use marginal analysis and make the right decision. Government policies must be developed based on economic analysis. Economic policies impact people's daily lives. In order to control the market, the government will increase or decrease the prices of goods. I can use a supply and demand curve diagram to analyze the situation, which means I can decide how to consume or how much money I can invest in certain areas. Applying economic theories could help me avoid certain risks and reduce losses in the market. In people's daily lives, people mainly play the role of customer and think from there.