Lessons for Young Economists was written by Robert P. Murphy and translated by Wu Liwei, the translator of Taiwan Province Youth Economics Course. Shizhen is reading this edition, and readers can also choose the mainland translation (the first economics book co-edited by Ye Cheng and Zhou Weina, and the answers can be downloaded after class). The style of this book is a bit like Man Kun's Principles of Economics, and it is a serious textbook. It is mainly divided into four parts: first, the introduction basis; Second, capitalism: market economy; Third, socialism: command economy; Fourth, interventionism: mixed economy. This book teaches the foundations of the Austrian school, such as people who study reality in economics, economic research methods, the theoretical system of the Austrian school based on axiomatic systems (similar to geometry), the viewpoint that only individuals have behaviors (subjectivism and individualism methodology), subjective preferences and their ordinal numbers, the choice between consumption and savings of individuals, the formation of prices, the relationship between income, savings and investment of entrepreneurs (Taiwan Province's translation of Entrepreneurship) and so on. These are part of the foundation of the whole theoretical building, and the related narratives are mainly concentrated in the first and second parts, which will be used in this book and all the future analysis of Austrian school's economic analysis, and the discussion is relatively complete and rigorous, which is the part that needs to be read carefully most. This book systematically criticizes socialism, that is, the third part, which personally understands the basic concepts and leaves this part of learning for the future. The core reason for the inevitable failure of socialism is the problem of socialist economic calculation (rather than the moral and incentive problems we imagined). This problem involves Mises' monetary theory (that is, we must understand the production under capitalism before we can understand the problem of socialist economic calculation), how to transform ordinal utility into a price system based on cardinality, and how to use money as a means of economic calculation. Why do you say that even if the central planner has mastered all available technical means, resources and consumer preferences?