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69 of 74 people found the following review helpful:
5.0 out of 5 stars
A Theory of Knowledge and Increasing Returns, June 22, 2006
This review is from: Knowledge and the Wealth of Nations: A Story of Economic Discovery (Hardcover)
David Warsh has written a lively history of economic thought from the time of Adam Smith to the present. His narrative begins in 1776 with the publication of "The Wealth of Nations" and the central contradiction that has puzzled economists for centuries: namely, the parable of the pin factory and the invisible hand.
According to Smith, the pin factory demonstrated how economies of scale produced increasing returns by lowering the costs of production. What Smith didn't follow up on was that increasing returns enabled a few players or a single player to drive smaller firms out of business and create oligopolies or monopolies. Smith's other theorem, which ran counter to the example of the pin factory was the theorem of the invisible hand. The invisible hand required that many players compete in the marketplace in order for the market to function properly so that no one firm or group of firms could become dominant.
Economists since then have favored the theorem of the invisible hand over the pin factory, not only because it was ideologically correct, but that it lent itself more readily to economic modelling. Yet things were happening economically that indicated that the invisible hand - which argued that rising costs and diminishing returns were inevitable - was no longer adequate in describing what was has been taking place over the last thirty years.
In 1990, a young economist named Paul Romer published a paper entitled "Endogenous Technological Change." Romer noticed that economic growth was accelerating in rich countries where the standard of living was diverging rapidly from poorer countries. This was contradicting the law of diminishing returns and, indeed, indicated increasing returns.
Romer's theory was that the accumulation and the deepening of knowledge in a society was the source of increasing returns. In classical economics, the fundamental factors of production were always labor, capital, and land (natural resources). Knowledge was always exogenous. Romer looked at the knowledge factor more carefully and deemed it an endogenous factor that economists had hitherto failed to take fully into account. Factoring in knowledge - creating new economic models of knowledge accumulation - has basically revolutionized the fields of industrial organization, international trade, urbanization, development and many other areas of social science. Although this development is still in its infancy it holds many exciting possiblilies for the future of economic growth. (And the growth of the economics profession.)
Warsh does an excellent job of portraying the key figures in economics and their rivalries as this drama unfolds. If you like intellectual history, you won't be disappointed with this book.
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51 of 55 people found the following review helpful:
2.0 out of 5 stars
Disappointment, February 16, 2007
This review is from: Knowledge and the Wealth of Nations: A Story of Economic Discovery (Hardcover)
Most of the reviewers of this book apparently found it to be impressive. Sadly I did not.
Too little time is devoted to offering adequate clear explanations of the economic ideas and theories being addressed, too much time is devoted to irrelevant social asides. The non-economist reader seeking to understand the economics as opposed to learning a great amount of academic gossip and politics will probably be disappointed. I wanted to understand growth theory. I did not and do not care that the reason why Paul Romer left Chicago for the Bay Area was that his wife had a disagreement with her lab manager or that Paul Romer has developed software to teach economics. I found such digressions to be unnecessary and distracting.
To cite just two of the book's specific limitations:
(1) The book lacks referential footnotes and a bibliography. Readers not already familiar with the subject wishing to pursue a topic further will be at a loss.
(2) The book lacks a glossary. Throughout the book numerous technical terms are introduced and, at best, briefly described. It would have been nice to have all of these key terms explained in one place for easy reference.
Small efforts on the part of the author would have remedied both of these deficiencies.
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35 of 40 people found the following review helpful:
5.0 out of 5 stars
Impressive history of economic thought, June 6, 2006
This review is from: Knowledge and the Wealth of Nations: A Story of Economic Discovery (Hardcover)
Adam Smith's Wealth of Nations supposedly explains the effects of two opposing economic forces, one being the force of the famous "invisible hand" (the economy of diminishing returns) and the other behind the success of the "Pin factory" model (the economy of increasing returns, or, growth theory). The book is a history of economic thought from the time of Smith to the present from the vantage point of this growth theory. The economist Paul Romer is the hero of the story. Romer is the one who was finally able to explain growth by correctly incorporating knowledge into his economic/mathematical model, according to Warsh.
Technicalities aside, the book is a fascinating depiction of intellectual history. The author deftly manages to capture the entire economics "scene" in impressive details -- from economics' major academic journals and institutions, its division of schools and universities, the major players, their work and personalities, and even to the happenings at important conferences. Warsh's depiction is so lively as to give one the impression that he had been present through all the historical events, engaging personally with all the economists described.
Students in economics will benefit from this book for the perspective it provides. Readers interested in economics culture in general, or those who seek to catch up on the trends of economic thought leading up to the last decade also won't be disappointed. One would be hard pressed to find an account of recent intellectual history as rich as this for any academic discipline.
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