Who has a feeling after reading Principles of Economics ?

Because of the major, economics has always been inseparable from learning, and it is the core of the ribbon that connects various courses. In life, many phenomena need to be explained by economic principles, and many problems must revolve around it.

Mankiw's Principles of Economics book mainly includes several sections. They are how people make decisions; how people trade with each other; How the overall economy works. The author explains the ten principles of economics from the micro and macro perspectives, and uses case studies as examples to better explain the principles of economics.

Among them, the issue of efficiency and equality is the foundation of economics. Efficiency refers to the characteristics of a society that derives the most benefit from scarce resources, while equality refers to the characteristics of an equal distribution of economic results among the members of society. In other words, efficiency refers to the size of the economic pie, while equality refers to how the pie is divided.

People face trade-offs and learn to allocate from scarce resources. What struck me was the concept of opportunity cost, which is the maximum value of giving up something in order to get something, and it's a suboptimal option. Many times in life, we are faced with choices, and the biggest cost of sacrifice needs to be weighed by ourselves.

Now that we are on the road of reading and studying, we must consider what we are sacrificing behind it. There is time, energy, money, ......Therefore, we should always remember to maximize the utility of the present and invest capital to create greater value for the future.

In addition to this, I can also benefit from other professional knowledge in the book. For example, the market is often a good way to organize business activities. The theory of planning is that only economic activity can be organized in a way that promotes the welfare of the entire socio-economy.

Market Economy Theory: When many firms and households trade with each other in the market for goods and services, the economy allocates resources through their decentralized decision-making, ** and self-interest guide their decision-making. The market economy organizes economic activity in a way that promotes overall economic welfare.

According to Adam Smith, households and businesses trade with each other in the market, as if they were guided by an "invisible hand" and lead to desirable market outcomes. It is the invisible hand used to guide economic activity.

The market reflects both the social value of an good and the social cost of producing it. There will be a spontaneous adjustment that will guide these individual buyers and sellers to a certain outcome that, in most cases, will maximize social welfare. When it prevents spontaneous adjustments to the laws of supply and demand, it limits the ability of the invisible hand to coordinate the decisions of the millions of households and businesses that make up the economy.

** The plan failed because they had tied the invisible hand of the market in their economic management.

This book can really make me gain a lot, let me think slowly, understand, and taste the charm of economics.

The principle and research of economics begins with the satisfaction of people's desires and desires, economics assumes that people are ideal and selfish economic people, and behind every decision people make is the summary and drive of previous experience, because people's desires cannot be directly measured, so the study of people's behavior in the economy objectively reflects people's desires in a certain condition and environment; Secondly, people's desires are directly related to demand and consumption; Demand and consumption provide the means and factors of production for human desire and consumption, and again, factors of production and social capital are the means and factors used to satisfy desires.

Recently, consumption and demand have become an important proposition for economists, and the study of demand is still in its infancy, but the collection and collation of consumption statistics is of great significance to public welfare. For example, the population and consumption data behind the study of the economic phenomenon of "Double Eleven" are enough to see the general consumption desire of today's people, including the ratio of men and women, consumer goods, age groups of purchasing power, and the overall trend.

Economics is the study of human nature, desires, and expectations for the future, while the external performance of human beings is the motivation and resistance to economic activity, which can be measured in monetary terms. That is to say, the value range that a person is willing to pay for a certain commodity or thing can measure the size of his desire for that commodity or thing.

Human desire is the main reason that governs people's economic activities, and personal desire shapes demand, and thus gives things use value and exchange value, thus giving birth to value theory. The desire for diversity is weak compared to the sense of superiority, which affects all people at all times, and is permanent and persistent, says the famous economist Hugh McCulloch. Therefore, people are everywhere throughout their lives to seek a sense of superiority, perhaps the accumulation of wealth or the honor on the field, so the pursuit of desire is the driving force for the progress of human society and the development of science and technology.

Macroeconomics and microeconomics are known as the two components of economics, microeconomics studies the decision-making of an individual or an organization in the economy and society, explains all the behavioral factors that affect the economy centered on the market, analyzes consumer preferences and needs, the composition of factors of production, the phenomenon of competition and exchange in the market, etc.

Macroeconomics is the study of a country's national economy. The core theory is the theory of national income determination, which also includes national income accounting (i.e., GDP), macroeconomic policies (demand management policy, supply management policy, international economic policy), and changes in national income (inflation, unemployment theory, economic growth, etc.). The theoretical cornerstone of economics is Keynesianism, charts.

Today I read Chapter 1 of Principles of Economics. For example, in the principles of economics, the word economy is derived from the Greek word. It's actually about family.

And the reasonableness is enumerated in detail. For example, whether a family can live happily depends on whether the distribution of work in the family division of labor is reasonable.

And the same is true for society. The difference is that the size of the distribution of the family is too small, while the social distribution is much larger. Another example is that the ability of each member of the family needs to be considered in the family distribution, and there are those who receive help and those who implement it; There are those who make money to support their families, and there are those who simply consume.

This must take into account in detail the abilities of each family member. It is obviously unrealistic to let preschool children go out to work or older children to earn money to support their families. And here comes a question of matching rights and obligations.

Obviously, adults work outside the home to earn money to support their families. Most of the obligations were assumed. And the children are simply consumed at home.

Therefore, it is necessary to obey the instructions of adults, in other words, children have the right and duty to receive education.

Therefore, from this point of view, in the family, the adults or simply the parents are in the dominant position of the family when the child is young. This means that they are more capable of survival than children. And this distribution extends to society, and the same is true.

When a group has an irreplaceable role or has advanced technology or advanced products, it means that they can create more and greater value. The group engaged in basic work will be relatively low. Comparatively, the former will get more resource tilt.

1. In Marshall's book, a very interesting phenomenon is mentioned, that is, in the traditional society, the relationship between neighbors is close, but everyone is indifferent to strangers, but with the development of economy and production capacity, the mobility of the population increases, wealth gathers in large and medium-sized cities, the sharing of the cost of living, the weakening of neighborhood relations, and the increase of trust among strangers, therefore, the cost of doing some adverse events in traditional societies is greater, but the cost of doing adverse events under the current situation is reduced. Recently, I saw an article commenting on the case of Jiang Ge, an international student, saying that in the stranger society before social **, the cost of making mistakes is extremely low, but with the recent development of the Internet, the cost of making mistakes has increased greatly. In my opinion, with the current development of social networking, Kong Huijin for the previous neighborhood society, the cost of making small mistakes is reduced, because social networks are centralized, and not everything will be captured by social networks, such as the examples related to ordinary people's mistakes that became popular on social networks this year, and Zhai Xinxin and Liu Xin, Ma Rong were concerned because of their own famous factors.

But the cost of making big mistakes has increased, that is, the cost of being caught by social ** is extremely expensive, because in the traditional neighborhood society, it is a big deal to go far away, but the virality of the Internet era has broken this opportunity to become a stranger.

2. When discussing the national debt, Marshall mentioned that the national debt is the state borrowing money from the people, and if other countries have national bonds, it is borrowing money from the people of other countries.