Oct 19th 2009 From Economist.com
It aims to combine the flexibility and quality of craftsmanship with the low costs of mass production
Lean production is the name given to a group of highly efficient manufacturing techniques developed (mainly by large Japanese companies) in the 1980s and early 1990s. Lean production was seen as the third step in an historical progression, which took industry from the age of the craftsman through the methods of mass production and into an era that combined the best of both. It has been described as “the most fundamental change to occur since mass production was brought to full development by Henry Ford early in the 20th century”.
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The methods of lean production aim to combine the flexibility and quality of craftsmanship with the low costs of mass production. In lean-production systems a manufacturer’s employees are organised in teams. Within each team a worker is expected to be able to do all the tasks required of the team. These tasks are less narrowly specialised than those demanded of the worker in a mass-production system, and this variety enables the worker to escape from the soul-destroying repetition of the pure assembly line.
By Cosma Shalizi American Scientist
THE MYTH OF THE RATIONAL MARKET: A History of Risk, Reward, and Delusion on Wall Street. Justin Fox. xviii + 382 pp. Harper Business, 2009. $27.99.
The Myth of the Rational Market, by Justin Fox, is an account—popular but thorough—of the roots, rise, triumph and ongoing fall of the theory of efficient markets in finance. This school of thought is an exemplary specimen of a type of social science that flourished after World War II: It has mathematical models at its center, has supposedly been empirically validated by statistical analyses, is indifferent to history and to institutions, and takes as an axiom that people are intelligent, farsighted and greedy. Unlike many economic theories, the efficient-market school has been influential beyond academia. It helped reshape ideas about how companies should be run, how executives should be paid, and indeed how the economy should be regulated (or not) to promote the general welfare. (In comic-book form: A mild-mannered social science by day, at night efficient-market theory puts on a cloak of ideology and struggles for the Capitalist Way.) The theory contributed, arguably, to setting up the crisis that has gripped the world economy since 2007. Its story is of much more than just scholarly interest.
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