Ha-Joon Chang - Economics - The User's Guide

2 As it will become clearer throughout the book, however, economics can never be a science in the sense that physics or chemistry is. There are many different types of economic theory, each emphasizing different aspects of complex reality, making different moral and political value judgements and drawing different conclusions. Moreover, economic theories constantly fail to predict real-world developments even in areas on which they focus, not least because human beings have their own free will, unlike chemical molecules or physical objects. [2] 2. For a similar view, see the article, ‘Is economics a science?’ by Robert Shiller, one of the 2013 Nobel Economics laureates. The article can be downloaded at: http://www.theguardian.com/business/economics-blog/2013/nov/06/is-economics-a-science-robert-shiller. If there is no one right answer in economics, then we cannot leave it to the experts alone. This means that every responsible citizen needs to learn some economics. By this I don’t mean picking up a thick textbook and absorbing one particular economic point of view. What is needed is to learn economics in such a way that one becomes aware of different types of economic arguments and develops the critical faculty to judge which argument makes most sense in a given economic circumstance and in light of which moral values and political goals (note that I am not saying ‘which argument is correct’). This requires a book that discusses economics in a way that has not been tried, which I believe this book does.

3 One difference is that I take my readers seriously. And I mean it. This book will not be a digested version of some complicated eternal truth. I introduce my readers to many different ways of analysing the economy in the belief that they are perfectly capable of judging between different approaches. I do not eschew discussing the most fundamental methodological issues in economics, such as whether it can be a science or what role moral values do (and should) play in economics. Whenever possible, I try to reveal the assumptions underlying different economic theories so that readers can make their own judgements about their realism and plausibility. I also tell my readers how numbers in economics are defined and put together, urging them not to take them as something as objective as, say, the weight of an elephant or the temperature of a pot of water. [3] But then scientists will tell you that even those numbers are not totally objective, if you asked them. In short, I try to explain to my reader how to think, rather than what to think. Engaging the reader at the deepest level of analysis, however, does not mean that the book is going to be difficult. There is nothing in this book that the reader cannot understand, as far as he or she has had a secondary education. All I ask of my readers is the curiosity to find out what is really going on and the patience to read through a few paragraphs at the same time. Another critical difference with other economics books is that my book contains a lot of information on the real world. And when I say ‘world’, I mean it. This book provides information on many different countries. This is not to say that all countries get equal attention. But, unlike most other books in economics, the information will not be confined to one or two countries or to one type of country (say, rich countries or poor countries). Much of the information provided will be numbers: how large the world economy is, how much of it is produced by the US or Brazil, what proportions of their outputs China or the Democratic Republic of Congo invest, how long people work in Greece or Germany. But this will be complemented by qualitative information on institutional arrangements, historical backgrounds, typical policy and the like. The hope is that at the end of this book the reader can say that he or she has some feel about the way in which the economy actually works in the real world. ‘And now for something completely different . . .’ [4] As they used to say on Monty Python’s Flying Circus .

4 ‘And now for something completely different . . .’ [4] As they used to say on Monty Python’s Flying Circus .

5

6

7

8

9

10

11

12

13

14

15

16

17

18