It's clear that North took some original steps in that direction, but Hall probably had the most complete approach and should get the most credit. But for Hall, unfortunately, the data are all impressionistic - what people said. None of his machinery survived. His patents were all lost in the Patent Office fire.

Whitney proved to be a competent manufacturer, but wasn't an original inventor to any important degree. Thomas Blanchard was a true genius: his stock making machine was the daddy of all the industrial profiling machinery, like the 1870s universal milling machine, that was the especial American contribution to machining technology. By that time, the British conceded that machinery innovation had shifted to America.

Business schools tend to focus on topics that are suitable to blackboards, so they overemphasize organization and finance. Until very recently, they virtually ignored manufacturing. I think of lot of the troubles of the 1970s and 1980s, and now more recently the 2000s can be traced pretty directly to the biases of the business schools.

I've been in China enough to know that you shouldn't opine on it unless you speak Chinese and have lived there for twenty years. I wasn't pretending to be a China expert in that final chapter. I was just pointing, first to the parallels between Chinese behavior toward us and ours toward GB when we were at the same stage of development, and secondly to how much harder their development path is than ours was.

The kind of precision manufacturing epitomized in the armories, while it was important, was only a small share of the economy until quite late in the century. Large-scale natural resource development and processing was the name of the game.

I've been among their critics [MBA programs]. Much of what I've seen in business schools is quite non-rigorous. Anecdotal histories are stretched to illustrate favored slogans. Evidence of their effectiveness is similarly anecdotal.

The Transcontinental Railroad Act is the first step in creating a continental common market.