On National Wealth is divided into five volumes. It starts from the source of wealth Marlboro Cigarettes, labor, and the means to increase labor productivity, division of labor, exchanges due to division of labor, the currency as a medium of exchange, the price of commodities, and the components of price-wages, land rent. And profit. I am more interested in the division of labor. Division of labor is a means to increase labor productivity. Smith believes that the greatest improvement in labor productivity, as well as more proficiency, skills, and judgment in labor, seems to be the result of division of labor. This sentence is at the beginning of "The Wealth of Nations", which is enough to make us realize the importance of division of labor Parliament Cigarettes. In the book, Smith gave us an example of needle making: "A worker who has not been trained enough in the profession of needle making and does not know how to use its machinery Carton Of Cigarettes, even if he works hard again, maybe one day It is impossible to make a needle, and of course it is impossible to make 20 needles. But modern commerce has made this work a specialized occupation, and it has not been a number of processes, and most of them have also become specialized occupations. ... there is such a small factory that only employs ten workers, and several workers perform two or three operations. It can also make 48,000 needles a day, which means that one person can make 4,800 needles a day. "If they cooperate without division of labor, Everyone does not specialize in a certain process, so no matter how hard they work, it is impossible to create 20 needles in a day. Maybe even one can not create any job that can be divided. Once the division of labor system is used, it can be increased accordingly. Productivity of labor. The founder of the auto maker Ford, Mr. Ford, changed the traditional automobile production workshop model to flow production, which greatly improved production efficiency and reduced production costs. It defeated competitors and occupied half of the automotive market. The above examples are far away for us now, and we can't experience the effect of the division of labor for ourselves. Let's take as an example the food we usually cook at home. During the holiday season, there will be a hearty meal at home. If the mother is only responsible for cooking and cooking at this time, she will probably have to start working at noon, otherwise it will not be enough time to cook a large meal, but if the whole family is dispatched, My mother is responsible for cooking, my father is responsible for killing the chicken, my sister is responsible for cutting the vegetables, I am responsible for washing the vegetables, and the whole family works in cooperation. Then you can cook a delicious feast soon, and the time required is not much. You may only need the mother A quarter of a person's time at work. This is the high efficiency of division of labor and cooperation. We now realize that the importance of division of labor is the knowledge left by the predecessors, while Smith realized that the importance of division of labor was carefully observed and analyzed from his work in life. In the book "The Wealth of Nations", Smith fully demonstrated his discovery and experience of various economic phenomena standing at the forefront of the era. There is still much more to be tasted in the book "The Wealth of Nations". I Only a superficial layer can be seen now. It is not something I can reacin depth. I will study this book again in the future. I hope that students who are interested can borrow it from the library.